Journal articles: 'Truss steel beam'

1

Zhang, Xide, Zhiheng Deng, Xiaofang Deng, Jingwei Ying, Tao Yang, Jun Xu, and Chunmin Zhang. "Experimental study on seismic behaviors of beam with concrete-encased steel truss." Advances in Structural Engineering 21, no. 13 (April 10, 2018): 2018–29. http://dx.doi.org/10.1177/1369433218764974.

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To evaluate the ductility and energy dissipation capacity of the beam with concrete-encased steel truss, eight specimens with different types of steel truss, reinforcement ratios, and shear span ratios were tested by low-cyclic loading regime. The results indicated that beams with concrete-encased steel truss performed plumped load–displacement hysteretic loops as well as high strength and stiffness. Moreover, cross-web members improved their seismic behavior more effectively than non-cross-web members. Finally, the restoring force model of concrete-encased steel truss beam is proposed in accordance with the experimental results, which can be used to predict the load–displacement behavior of concrete-encased steel truss beam. The results could also provide a reference for the design and application of concrete-encased steel truss beam in practice.

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Deng, Zhiheng, Changchun Xu, Qiang Hu, Jian Zeng, and Ping Xiang. "Investigation on the Structural Behavior of Shear Walls with Steel Truss Coupling Beams under Seismic Loading." Advances in Materials Science and Engineering 2018 (2018): 1–16. http://dx.doi.org/10.1155/2018/5602348.

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Based on existing experimental results, the finite element analyses were carried out on shear wall structures with steel truss coupling beams. This work studied the seismic behaviors and the working mechanism of the steel truss coupling beam at the ultimate state and put forward two parameters: the area ratio of web member to chord and the stiffness ratio of coupling beam to shear wall. The seismic optimum design method of the coupling beam was also proposed. Afterwards, a comparative analysis was implemented on the three-dimensional shear wall model with steel truss coupling beams designed by the proposed design method. The results show that the structures designed by the proposed method have excellent seismic behaviors, the steel truss coupling beams have enough stiffness to connect shear walls effectively, and its web members have appropriate cross sections to dissipate seismic energy.

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Qiu, Hong Sheng, Shu Shi, and Xiao Min Huang. "The Study on Mechanical Performance of New Composite Steel-Truss Travelling Bridge Structure." Advanced Materials Research 374-377 (October 2011): 2221–25. http://dx.doi.org/10.4028/www.scientific.net/amr.374-377.2221.

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As for structural beam of travelling bridge under reciprocate loads, at the bearing there will be a large change in stress of structure, while at the ends and midspan, the change of stress of structure will be simple. In this paper, based on the bearing features of travelling bridge structure, as well as features of steel-truss beam and steel box beam, a new composite structure, which is named as steel truss-steel truss box beam, is put forward. This new structure adopts steel box beam with truss inside at the bearings, and adopts steel truss beam at the midspan. Based on a certain engineering project, combined with ANSYS, according to a serious of sizes and structure styles, work of modeling, analysing and optimizing has been done in this paper. As calculating results showed, steel truss-steel truss box beam not only has higher bearing capacity, structural bearing capacity and a better wholeness, but also has a lower steel usage, which can provide references for similar composite structures' research in future.

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Lin, Qian, Zhi Heng Deng, and Guang Xian Tang. "Experimental Study on Seismic Behavior of Full-Scale New Steel Truss Coupling Beams." Advanced Materials Research 163-167 (December 2010): 2041–46. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.2041.

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Steel truss coupling beam is a new type of steel coupling beam structure. To investigate seismic behavior of this coupling beam, low cyclic loading tests for four full-scale specimens of steel truss coupling beam are presented. The specimens are designed considering three factors which are T-stub steel, angle steel and material strength. The experimental data show that steel truss coupling beam has good ductility, and can consume a great quantity of earthquake energy. By enlarging the sections of cross abdominal trusses and chord members, bearing capacity and stiffness of the whole coupling beam are greatly increased.

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Li, Yong, Ye Liu, and Shaoping Meng. "Seismic performance evaluation of coupled wall system with novel replaceable steel truss coupling beams." Advances in Structural Engineering 22, no. 6 (November 18, 2018): 1284–96. http://dx.doi.org/10.1177/1369433218811530.

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Coupled wall systems are often used in high-rise buildings in zone of high seismic risk to provide lateral resistance to earthquake loading. Once damaged, reinforced concrete coupling beams are costly and time-consuming to repair post-earthquake. To enhance the seismic resilience for coupled wall structures, a novel replaceable steel truss coupling beam is first introduced. The proposed replaceable steel truss coupling beam consists of chord members at the top and bottom, respectively, and two buckling-restrained energy dissipaters are employed in the diagonal direction. The energy dissipaters can yield first before the wall piers and dissipate large amounts of energy to protect the main structure under seismic loadings. In addition, the energy dissipaters can be easily installed and post-earthquake repaired through pin connection with the chord members. This article mainly focused on the numerical and theoretical analyses of the proposed replaceable steel truss coupling beam, and nonlinear analytical models were developed in PERFORM-3D. An 11-story prototype structure was designed per Chinese code. The seismic response of hybrid coupled wall system with replaceable steel truss coupling beams was evaluated using nonlinear time history analysis and compared with the response of reinforced concrete coupled wall system with reinforced concrete coupling beams under seismic loadings. Results show that the proposed replaceable steel truss coupling beam leads to a good seismic response with reduced interstory drifts of the systems and rotational demand in the beams and wall piers due to a large energy dissipation capacity and overstrength.

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He, Ming Wei. "Study on the Mechanical Behavior of Long-Span Steel Truss Transfer Storey." Advanced Materials Research 838-841 (November 2013): 219–26. http://dx.doi.org/10.4028/www.scientific.net/amr.838-841.219.

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The analysis to the staged construction of the long span steel transfer truss was performed. The focus was on the stress and deformation analysis of the transfer truss, the interactions of the transfer member with the concrete tube, and the combination analysis of the steel girder and concrete beam. It was proved that the method of staged construction can get the good result that can make full use of the characteristic of the steel material, make steel truss bear more load effect in the construction stage. So the load to the concrete tube is lessened, which makes the load effect of the structure is more rational. Some advices for the construction and design of steel transfer truss is also provided. Keywords:Steel truss; Transfer story; Staged Construction.

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7

Sun, Weidong, Kang Li, and Xinyu Niu. "An Experimental Study on Seismic Performance of Steel Truss Coupling Beams with Buckling-restrained Brace." Open Civil Engineering Journal 9, no. 1 (April 17, 2015): 134–39. http://dx.doi.org/10.2174/1874149501509010134.

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Through the pseudo-static test on the steel truss coupling beams with buckling-restrained brace, the bearing capacity, deformation capacity, hysteresis curve, skeleton curve, ductility, Energy Dissipation and stiffness degradation of such coupling beam are understood. The test results show that the steel truss coupling beams with buckling-restrained brace is characterized by bigger bearing capacity, higher ductility and good plastic energy dissipation capacity.

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Ji, Xiao Meng, Deng Feng Wang, Yuan Qing Wang, and Yong Jiu Shi. "Optimizing Study of Top Beam Structure of Electrostatic Precipitator Casing." Applied Mechanics and Materials 215-216 (November 2012): 510–17. http://dx.doi.org/10.4028/www.scientific.net/amm.215-216.510.

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An optimizing design idea is produced for the structure of top beam of electrostatic precipitator casing. The thermos cabinet and the original box shaped top beam of casing compose a truss beam system whose overall section height is increased greatly, resultantly, the bend bearing capacity of truss beam increases significantly than that of the original top beam of casing. Consequently, the wall thickness of box section of the original top beam can be reduced so that the steel consumption can be saved. Based on a practical project, the load effects on truss beam were investigated, respectively, including the air pressure difference and the temperature difference among external layer, thermos cabinet and interior of casing. Besides, the evaluation method of internal force in truss beam was investigated and the selective preference of truss beam configuration was conducted. The unfavorable load cases of air pressure difference and temperature difference are proposed for truss beam design. Besides, the accurate evaluation method of internal force and the design method for economical configuration of truss are proposed. In consideration of load bearing effect of thermos cabinet layer, the optimized design of truss beam originating from box sectioned top beam can ensure the truss works safely and reduce the steel consumption significantly.

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9

Wang, Zheng Jun, Lei Gao, Xiao Hui He, and Hong Bing Liu. "A Simple Calculation Method of Assembled Type Steel Truss Bridge's Deflection." Applied Mechanics and Materials 340 (July 2013): 31–36. http://dx.doi.org/10.4028/www.scientific.net/amm.340.31.

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In this paper, it is proposed that the simplified calculating method of equivalent beam of assembled type steel truss bridge's deflection. The use of finite element analysis software, the common span bridge's deflection is calculated. It is provided that the maximum deflection of assembled type steel truss bridge is approximately proportional to the span's cube through numerical analysis, and it has a linear relationship with the maximum deflection of equivalent beam. The space equivalent coefficient is introduced; the space problem is converted into a plane problem. The relational expression between assembled type steel truss bridge and equivalent beam has a fitting while to be strengthened or not strengthened. Therefore, it is provided a simple and feasible method for similar assembled type steel truss bridge's deflection calculation.

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10

Geng, Nan. "The Application of the Steel Materials in Large-Span Cantilever Composite Structure." Advanced Materials Research 644 (January 2013): 353–57. http://dx.doi.org/10.4028/www.scientific.net/amr.644.353.

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The characteristic of the Steel materials are high strength、light weight、high integral rigidity、high deformation capacity, So the Steel materials is suitable used to build large-span、superelevation、extra-heavy type of building. The urban planning exhibition hall of cultural activity center in Shanxi is large-span cantilever composite structure,that is SRC column and steel beam + concrete frame structure, the maximum cantilever length of fourth layer truss is 10 m.Through the top of the cantilever steel beam with its lower suspension truss and cross-section cantilever steel beam of the first floor cantilever beam realize cantilever togetherly. Realize the structure design based on Performance Analysis by using midas/gen ver8.00 to establish a rational model,. The pipe truss and tensed cable structure joint control the total displacement of glass curtain wall.

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11

Kareemi, Muhammad Ajmal, Floriana Petrone, and Giorgio Monti. "Experimental Tests on Composite Steel-Concrete Truss Beams." Applied Mechanics and Materials 847 (July 2016): 68–75. http://dx.doi.org/10.4028/www.scientific.net/amm.847.68.

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This paper reports the results of an experimental campaign conducted on a set of eight composite beams made of prefabricated steel trusses encased in structural concrete. The test setup is organized in such a way to apply an evenly distributed load on the beam, so to simulate the actual loading condition in real buildings. This is also to avoid the formation of peculiar and unusual shear resisting mechanisms occurring in three or four-point bending tests. The experimental results are presented in terms of force-displacement graphs and also in terms of stress-strain diagrams in the steel members. The outcome of this study highlights that Composite Truss Beams (CTBs) have an effective performance in the shear resisting mechanism, showing a capacity higher than that estimated through the current capacity equations given by Codes.

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12

Yang, Shi Ruo, and Dan Qing Chen. "Railway Steel Truss Coefficient of Lateral Force Distribution." Advanced Materials Research 304 (July 2011): 359–65. http://dx.doi.org/10.4028/www.scientific.net/amr.304.359.

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This paper illustrates the internal force calculation of the railway steel truss girder under the action of lateral load q by using the finite element method for truss segment. Load q is distributed with partition coefficients a1, a2 respectively on the top and bottom longitudinal bracing in conventional way and calculated as planar articulate. When two forces calculated respectively by using the spatial analysis and planar structure method are equal, lateral force distribution coefficient a1, a2 can be obtained. In the end of this paper we take examples of simple through beam of 48m, 64m, 80m, 144m, 192m, continuous through beam of 2×64m,3×64m, dual continuous deck beam of 2×64m and dual simple through beam of 64m and get the partition coefficient of the floor system plane, 0.77, and the other plane is 0.39.

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13

Wang, Chun Ming, Xin Zhao, Mai Wu, Jun Li Liang, and Zon Gang Gu. "Application of Steel Bar Truss Deck Construction Technology in a Large Steel Project." Applied Mechanics and Materials 368-370 (August 2013): 851–54. http://dx.doi.org/10.4028/www.scientific.net/amm.368-370.851.

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Steel bar truss deck is a kind of combination template which is processed into steel trusses with steel, and welded steel bar truss and galvanized steel sheeting into a whole. It has many advantages such as economical, convenient, safe and reliable, etc. It can withstand the concrete weight and construction loads and installed directly on the steel beam without support at the bottom. This paper introduces the construction technology of steel bar truss deck with Tianjin Museum engineering examples. The technology has made a better construction, and ensured the construction period and the quality of the project in this project.

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Wang, Hui, He Xia, and Jia Wang Zhan. "Modeling and Dynamic Characteristics Analysis of the Qiantangjiang Rail-Cum-Road Bridge." Applied Mechanics and Materials 501-504 (January 2014): 1187–93. http://dx.doi.org/10.4028/www.scientific.net/amm.501-504.1187.

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The dynamic characteristics of the Qiantangjiang rail-cum-road steel truss bridge is to analyzed by the Beam elements Midas model, beam-Plate element Midas model and plate element Ansys model, and the calculated results are compared with the field experiment data. The natural frequencies and mode shapes simulated with the plate element Ansys model are much closer to the experimental ones, indicating it can more accurately simulate the dynamic characteristics of steel truss structure. The results can provide a reference for modeling the steel truss bridges, and as the foundation of further static and dynamic analyses.

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15

Zhang, Ke Bo, Zhi Zhang, Jian Ren Zhang, and Bin Liu. "Analysis of Shear Capacity of Stirrup Corroded RC Beam Based on the Truss-Arch Theory." Applied Mechanics and Materials 204-208 (October 2012): 2865–73. http://dx.doi.org/10.4028/www.scientific.net/amm.204-208.2865.

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On the basis of truss-and-arch model and the concrete softening strength criterion under ultimate state, a formula for shear capacity of reinforced concrete (RC) beam with diagonal reinforcement was established and verified. Accordingly, six RC beams with diagonal reinforcement and corroded stirrup were tested along with control group, the tested results were analyzed by liner regression to modify the formula given. Hence a formula for inclined section shear capacity of stirrups corroded RC beam with diagonal reinforcement was proposed and compared with a preceding formula without a consideration of diagonal reinforcement in corroded RC beam .The results showed that the existence of diagonal reinforcing steel bars enhanced the behavior of vertical compression web member in truss institutions, therefore increasing the shear force shared by truss mechanism. The inclination of diagonal web member is a crucial parameter of truss model. As the stirrup corrosion aggravating, the shear bearing capacity of such RC beams does not decrease drastically.

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16

Wang, Hai Liang, and Zhen Yu Wang. "Effects of Guiding Beams on Behavior of Continuous Curved Girder Bridge of Spatial Truss Structure with Concrete Filled Steel Tubular." Applied Mechanics and Materials 71-78 (July 2011): 284–87. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.284.

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The stiffness, length and weight per unit length of the guiding beam had significant effect on the internal forces of the girder during the construction. The appropriate parameters could reduce internal forces, and save materials and ensure construction safety. The effect of different parameters of the guiding beam on the behavior of girder during the construction was analyzed to determine a reasonable parameter of guiding beams on continuous curved girder bridge of spatial truss structure with concrete filled steel tubular in incremental launching construction. The results of the analysis could provide technical data the design of other launching nose for continuous curved girder bridge of spatial truss structure with concrete filled steel tubular in incremental launching construction.

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17

Wu, Yi, Chun Yang, Guang Xing Li, and Chun Mei Zhang. "Study on Mechanical Performances of Steel Truss Reinforced Concrete Transfer Beam." Advanced Materials Research 368-373 (October 2011): 299–302. http://dx.doi.org/10.4028/www.scientific.net/amr.368-373.299.

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Experimental researches of one 1:6 scale steel truss reinforced concrete (STRC) transfer beam were carried out to investigate mechanical performances of a transfer beam under vertical loads in an actual tall building. The development of crack along the beam, strains of reinforcements and steel truss, and the force transference mechanism of the deep beam were analyzed. Experimental results showed that the bearing capacity and rigidity of the STRC transfer beam are significantly enhanced compared with normal RC transfer beam. The strut-and-tie force transference mechanism is formed in the STRC transfer beam and fully made use of by the STRC transfer beam. And results verified that the shortest and most direct force transference path can be achieved to transfer upper loads.

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18

Hu, Qiang, Zhi Heng Deng, Zhen Zhong Pang, and He Yong Lu. "A Simplified Seismic Design Method on Steel Truss Coupling Beam." Advanced Materials Research 163-167 (December 2010): 245–50. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.245.

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A simplified seismic design model on steel truss coupling beam is suggested based on compatible distortion and balance conditions, considering second order effect and perfect plasticity. This model regards web members of the coupling beam as constraints, thus just the chord need be studied instead of the whole truss. End moments and end shears of chords and relations between distortions of components of the truss and displacement of the coupling beam are established. So curve of load-displacement, plasticity formation and development and influences of area of web members on ductility are convenient to obtain. Results show that this model is more convenient and accuracy than finite element method. Finally some valuable conclusions about influences of span-to-depth ratio and area of web member on ductility of the coupling beam are acquired to contribute to design.

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19

Amir, Fatmawati, Iman Satyarno, and Djoko Sulistyo. "Inelastic behavior of reinforced concrete cantilever beam with embedded steel truss in flexural plastic hinge under cyclic loading." MATEC Web of Conferences 258 (2019): 04007. http://dx.doi.org/10.1051/matecconf/201925804007.

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Structures are expected to have ductile behavior under major earthquakes. One requirement to achieve this ductile behavior is when the structures have no shear failures in their elements. This paper discusses a new method by using the embedded steel truss in the flexural plastic hinges of beam to avoid shear failure. As already known that the shear strength provided by the concrete will be decreased when the ductility of flexural plastic hinges develop in a member. Therefore, a conservative procedure by ignoring the role of concrete in flexural plastic hinges in resisting the shear demand is adopted by some codes. This will increase the demand for shear reinforcement provided by the stirrup or transverse reinforcement in the plastic hinge; yet it still does not ensure that the shear failure does not come to happen. From the laboratory test results under cyclic loading in this study, it can be noted that the beam with embedded steel truss in the plastic hinge has better hysteretic behavior than the one without the embedded steel truss. The evaluation of test result is also shown the strength of the beam with the embedded steel truss in the plastic hinge is not reduced with an increase in the amplitude of the drift of 1.4 to 3.5. Besides, the strength of the beam without embedded steel truss in the plastic hinge is reduced with an increase in the amplitude of the drift after reaching 2.5.

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20

Luo, Xu, Xin Sha Fu, Li Xiong Gu, and Lu Rong Cai. "Analysis of Effect of Fetching Girder from Trestle of Long-Span Steel Truss Bridge under Cantilever Erection." Applied Mechanics and Materials 587-589 (July 2014): 1522–26. http://dx.doi.org/10.4028/www.scientific.net/amm.587-589.1522.

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A large span steel truss bridge, it assembles "high, big, difficult, new, deep, steep, dangerous, heavy", etc., "eight" features in a body. In order to reduce the number of transportation ships and make the erection convenient, this paper studies a set of revolving beam erection scheme to improve the utilization efficiency of trestle. Through calculation, it is found that fetching girder directly from trestle is feasible. cantilever erection of the girder , The main truss linearis of the steel truss girder upstream and downstream has slightly deviation with the operating angle change of the cantilever crane and it need to stop lifting when monitoring and measuring, and the mast should be placed along the bridge direction.

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Wang, Kun, Zhiyu Zhu, Huihui Luo, and Ahmed Ahmad Omar. "Analysis on Flexural Capacity of Square Steel Tube Truss Concrete Beams with Grouted Chords." Advances in Materials Science and Engineering 2021 (February 11, 2021): 1–13. http://dx.doi.org/10.1155/2021/6694291.

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In this research paper, simulations on five specimens of square steel tube truss concrete beams with grouted chords were conducted by finite element analysis (FEA) software ABAQUS. Comparison of failure modes, vertical load-deflection curves, and steel tube strain variation with tests was done. The rationality and validity of the FEA models were also verified. On this basis, parameter analysis was carried out, and the influence of concrete strength, steel ratio of upper and lower chords, and spacing of steel tube truss joints on the vertical load-deflection curves were obtained. From the results of tests and parameter analysis, design formulae of flexural bearing capacity for composite beams were proposed based on the assumption that steel tubes are equivalent to ordinary longitudinal steel bars. Accordingly, the results indicated that the steel tubes of the upper chords in the composite beams cannot get yield for full sections due to the structural requirements; the steel tube of the lower chords will be the first to reach fully yielding and the upper concrete crushed subsequently, showing a failure mode analogous to that of the under-reinforced concrete beam; the steel ratio of lower chords is the primary factor affecting the flexural capacity of the normal section among the parameters; the calculation from the proposed design formulae for the flexural capacity of normal section is in agreement with the tests and simulations. This research could provide reference for the design of this kind of composite beam.

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Michał, Piątkowski. "Critical load of steel trusses - graphical methods." MATEC Web of Conferences 219 (2018): 02015. http://dx.doi.org/10.1051/matecconf/201821902015.

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The article presents graphical methods for determine critical loads of column and beam elements based on experimental results. The author presents the principles of using each method and the results of author's experimental tests on the instability phenomenon of planar steel truss with imperfections. The discussed methods were used to determine critical load of the tested truss, next compared with the results of numerical analysis. The validity of methods for determining the critical moment in the truss analysis has been confirmed.

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Colajanni, Piero, Lidia La Mendola, Alessia Monaco, and Nino Spinella. "Cyclic Behavior of Composite Truss Beam-to-RC Column Joints in MRFS." Key Engineering Materials 711 (September 2016): 681–89. http://dx.doi.org/10.4028/www.scientific.net/kem.711.681.

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In the present paper, the cyclic behavior of beam-to-column joints made up of Hybrid Steel Trussed Concrete Beams (HSTCBs) connected to Reinforced Concrete (RC) piers is investigated. HSTCBs are a typology of composite beam generally constituted by a steel truss with end zone added rebars embedded within a block of concrete cast in place. HSTCBs represent a structural solution for light industrialization in the civil constructions; the main advantages in their use are the higher construction speed with the minimum site labor, the possibility of covering wide spans with low depths and a final economical convenience. For these reasons, they are also increasingly adopted within seismic framed structures. In the present study, the examined joints are representative of framed RC structures subjected to seismic actions and designed according to the current Italian standard code. Cyclic tests are performed and interpreted by means of analytical and numerical models with the aim of verifying the strength capacity and ductility of the system, focusing on both the global behavior and the force transmission between steel truss and concrete in the joint region.

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Wang, Jing Feng, Zhong Ming Zheng, Zu Lie Wu, and Jie Zhou. "Behaviour of Composite Beam of CFST Truss with Diagonal Web Members." Advanced Materials Research 446-449 (January 2012): 414–17. http://dx.doi.org/10.4028/www.scientific.net/amr.446-449.414.

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This paper presents the results of an experimental program for a novel composite beam of concrete-filled steel tube (CFST) truss with diagonal web members. This paper investigated the static performance and failure modes of the composite beam. Load-deformation relationships and deflection regulation of the test beam were obtained and its performance was evaluated in terms of its stiffness and bearing capacity. The strain distribution within critical components was also analyzed. The experimental results showed that the composite beam of CFST truss with diagonal web members has high strength and ductility performance. It markedly improves the stiffness and strength of the composite beam of CFST truss with straight web members

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Tao, Mu-Xuan, Jian-Sheng Fan, and Jian-Guo Nie. "Seismic behavior of steel reinforced concrete column–steel truss beam hybrid joints." Engineering Structures 56 (November 2013): 1557–69. http://dx.doi.org/10.1016/j.engstruct.2013.07.029.

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Zhang, Shao Wen, Lu Lu Zhang, and Qi Zhang. "Innovation of Old Buildings Repairing and Vierendeel Steel Roof Truss." Applied Mechanics and Materials 501-504 (January 2014): 1043–47. http://dx.doi.org/10.4028/www.scientific.net/amm.501-504.1043.

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The old building was saved, protected and transformed with the original technique and measure. After the structure reliability of old building passed to test and evaluate, the architectural function was redesigned, old structure was reinforced and repaired. The structural integrity was strengthened using cement mortar and steel mesh to reinforce inner walls, adding cross walls, enclosure beam and seismic angle-steel. Without change the appearance of the building, a vierendeel steel truss was innovated, the loads of roof, truss and loft ceiling was transferred to small steel-concrete columns placed under truss support, not to walls. Vierendeel steel truss led to open space changed to the third floor within loft, the area increased twenty-six percent and met owner use at lower cost, results show good for ten years.

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Li, Xiao Li, Zong Guang Sun, and Ying Fang Fan. "Static and Dynamic Test Detection of Steel Tube Truss Arch Bridge." Applied Mechanics and Materials 178-181 (May 2012): 2513–20. http://dx.doi.org/10.4028/www.scientific.net/amm.178-181.2513.

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Static and dynamic test of 85m span half-through steel tube concrete truss arch were in. Follow contents were determined in the static test:control section deflection of steel tube concrete arch rib under test load;deck control section deflection and strain measuring in test load;deflection and strain measuring of suspender beam;strain test of suspender;crack observation of beam in loading. The deflection and strain measuring point of deck control section were on the beam. The content of dynamic load test :the measuring of impact coefficient、natural frequency and cable tension by frequency methods. Finally, operational situation of bridge was estimated.

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Yang, Chun, Ming Ji He, Jian Cai, Yan Sheng Huang, and Yi Wu. "Study on Mechanical Behaviors and Calculation of Shear Strength of Steel Truss Reinforced Concrete Deep Beams." Advanced Materials Research 243-249 (May 2011): 514–20. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.514.

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Based on strut-and-tie model (STM) in deep beams, steel truss reinforced concrete (STRC) deep beam was developed. Experimental investigations of mechanical performances of STRC deep beams were carried out, and results show that STRC deep beam is of high ultimate bearing capacity, large rigidity and good ductility; Strut-and-tie force transference model is formed in STRC deep beams, and loads can be transferred in the shortest and direct way. Then Steel reinforced concrete (SRC) strut-and-tie model (SSTM) for determining the shear strength of STRC deep beams is proposed. The contribution of SRC diagonal strut, longitudinal reinforcements, stirrups and web reinforcements to the shear strength of STRC deep beams are determined with consideration of softened effects of concrete, and for safe consideration, superposition theory is employed for SRC struts. Computer programs are developed to calculate the shear strength of STRC deep beams and verified by experimental results.

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Dai, Su Juan, Bao Chen Zhu, and Qing Chen. "Analysis of Bending Strength of the Rectangular Hole Honeycomb Beam." Applied Mechanics and Materials 405-408 (September 2013): 993–96. http://dx.doi.org/10.4028/www.scientific.net/amm.405-408.993.

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This paper introduces the characteristics and practicability of the honeycomb beam and analyses the mechanical behavior. Based on the vierendeel truss theory, the normal stress calculation method of the rectangular hole honeycomb beam is discussed, and the calculation formula is deduced. Finally using the derived formula, the paper calculates the normal stress of the rectangular hole honeycomb beams with different parameters, and analyses the influence of the opening rate and the hole spacing on the strength of honeycomb beam by comparing the same section of solid web beam, thus, provides reference for design of steel honeycomb beam.

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Ran, Hong Dong, Wen Xv, and Ming Zhou Su. "Experimental Study on Seismic Behaviors of Improved Composite Steel Staggered Truss Structures." Applied Mechanics and Materials 166-169 (May 2012): 1383–86. http://dx.doi.org/10.4028/www.scientific.net/amm.166-169.1383.

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According to the poorly seismic behaviors of composite staggered trusses system, an improved composite staggered trusses system was proposed. Based on the experimental study of a 1/3 scale improved composite staggered truss frame steel structure model under cyclic loading, the seismic behaviors and failure mechanism was studied, and the seismic behaviors was evaluated by the hysteretic behavior, ductility, energy dissipation and rigidity degeneration. The study showed that the improved composite staggered truss steel structures had the advantages in bearing capacity, ductility, deformability and energy dissipation, but the lateral rigidity was weak and non-uniform along its vertical layout. The stress measurement showed that the plastic hinge formed in the web members of the truss firstly, then, in the chord members of the truss, and finally the plastic hinges formed in the column, earthquake energy mostly dissipated by the truss members, the failure mechanism of the improved composite staggered truss steel structures was the beam hinges failure mechanism.

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Chang, Shan, Ming Yang, Linjie Tian, and Pengfei Yuan. "Bending behavior of steel octagon-web beam." Advances in Structural Engineering 23, no. 12 (May 27, 2020): 2694–708. http://dx.doi.org/10.1177/1369433220919072.

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Due to the improvement of steel properties, many steel structures with attractive appearance emerge unceasingly. In this article, a new structure of steel octagon-web beam which has the similar appearance with honeycomb beam was presented. The mechanical characteristics of steel octagon-web beam under bending loads were analyzed theoretically. Based on the Vierendeel truss theory in deflection calculation of honeycomb beam, the deflection calculation method of steel octagon-web beam which was validated by finite element method was studied. Two parameters affecting deflection of steel octagon-web beam, such as opening type and expansion ratio, were analyzed. A scale model of steel octagon-web beam was manufactured in order to study bending behavior of the structure. The failure patterns of test specimen under four-point bending test are the buckling of deck and web. A nonlinear finite element model of test specimen whose results were compared with test was established by software ABAQUS 2017. The stresses of slabs under ultimate load have reached yield stress, which shows steel octagon-web beam has good flexural performance.

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Wang, Jing Feng, Bo Wang, and Zhong Ming Zheng. "Static Experimental Study on Composite Beam with Concrete filled Steel Tubular Truss." Advanced Materials Research 374-377 (October 2011): 1680–84. http://dx.doi.org/10.4028/www.scientific.net/amr.374-377.1680.

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To research the mechanical behaviour of the novel composite beam with concrete filled steel tubular (CFST) truss, an experimental study of simple composite beam subjected to monotonic loading is described. A test program was developed to investigate failure models and working mechanism of the typed composite structure. Load-deformation curves, deflection regulation, strain distribution of beam were analyzed and asserted. The experimental and analytic results show that the typed composite beam has high strength, excellent ductility, and torsion performance. It can be used the large span bridges and high rise buildings.

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Nie, Jian-Guo, and Li Zhu. "Beam-Truss Model of Steel-Concrete Composite Box-Girder Bridges." Journal of Bridge Engineering 19, no. 7 (July 2014): 04014023. http://dx.doi.org/10.1061/(asce)be.1943-5592.0000592.

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Guo, Qing Sheng, and Qing Shan Yang. "Investigation on Steel Staggered-Truss System RC Slab." Advanced Materials Research 446-449 (January 2012): 49–53. http://dx.doi.org/10.4028/www.scientific.net/amr.446-449.49.

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For steel staggered-truss (SST) system, RC slabs are the main structure members to make the whole building work together beside to take the vertical load. There are openings in the RC slabs due to requirement of staircases、lift wells and other services, these openings will reduce the stiffness of RC slab and make stress concentration. Usually, the RC slab is designed under vertical load only, this will lead to the design defect and building calapse for SST structure. There are few research for SST RC slab are presented untill now. In the paper, based on two different 3D models considering or ignoring the stiffness of infilled walls (SIW), a numerical investigation is presented on the structural behaviors of the SST system utilizing the soft ware ETABS. As a finite element analysis method, the shell element is adopted for RC slab & infilled wall, the beam element is adopted for beam、colum and truss members. The structure is asymmetrical due to the SIW, it causes the torsional forces in the building and the extra stresses in the RC slabs, the additional reinforcement need to be provided to strengthen the high stress areas. Comparing with the results of response spectrum analysis under the combination with earth quake load, we make some conclusions, including the capacity of anti-seismic and the effect of the SIW for SST system RC slab，that could be a reference for SST structure design.

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Tang, Guang Xian, Zhi Chao Jia, Zhi Heng Deng, and He Yong Lu. "Nonlinear Finite Element Analysis on Frame Joints of Steel Truss SRC Beam." Advanced Materials Research 243-249 (May 2011): 229–34. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.229.

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To understand mechanical characteristics of frame joints of steel truss SRC beam, the accuracy of the proposed method is proved by the comparison between FEA result and test result, considering different steel ratios, cross flank rods and axial loads as well as plastic model of concrete damage. The result indicates that cross section and steel can delay joint damage and improve the bearing capacity, and that axial load can improve joints shear capacity to some extent but joints ductility is decreased, and that constraint of steel to concrete improves brittleness character caused by bad ductility of concrete.

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Bonopera, Marco, Kuo-Chun Chang, Chun-Chung Chen, Tzu-Kang Lin, and Nerio Tullini. "Bending tests for the structural safety assessment of space truss members." International Journal of Space Structures 33, no. 3-4 (September 2018): 138–49. http://dx.doi.org/10.1177/0266351118804123.

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This article compares two nondestructive static methods used for the axial load assessment in prismatic beam-columns of space trusses. Examples include the struts and ties or the tension chords and diagonal braces of steel pipe racks or roof trusses. The first method requires knowledge of the beam-column’s flexural rigidity under investigation, whereas the second requires knowledge of the corresponding Euler buckling load. In both procedures, short-term flexural displacements must be measured at the given cross sections along the beam-column under examination and subjected to an additional transverse load. The proposed methods were verified by numerical and laboratory tests on beams of a small-scale space truss prototype made from aluminum alloy and rigid connections. In general, if the higher second-order effects are induced during testing and the corresponding total displacements are accurately measured, it would be easy to obtain tensile and compressive force estimations.

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Shi, Yu Zhou, Xiao Yan Zheng, and Yan Li. "The Research on the Influence of Connection Stiffness to the Multi-Layers Staggered Steel Truss Structure Performance." Applied Mechanics and Materials 256-259 (December 2012): 801–5. http://dx.doi.org/10.4028/www.scientific.net/amm.256-259.801.

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In the design and calculation of staggered steel truss structure, we always assume that truss chord and pillars is hinged while longitudinal beam and pillars is rigid-jointed. But each connection mode in engineering has certain rotary stiffness, they can't completely meet the design requirements. In this paper, 8 finite element models are established with different connection stiffness to compare the effects to the structure performance. In order to explore how the node connection stiffness influence the multi-layers staggered steel truss structure stress on the performance of the law, this paper provide the theory basis for the structure design and construction research.

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Rusli A., Muhamad, Prabowo Setiyawan, Dessy Maimunah, and Destia Wulandari. "The Effect of Hole Width on Full Height Rectangular Opening Castellated Steel Beam with Diagonal Stiffener Concerning Its Flexural Capacity." Journal of Advanced Civil and Environmental Engineering 2, no. 2 (November 6, 2019): 76. http://dx.doi.org/10.30659/jacee.2.2.76-84.

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The use of a diagonal stiffener in a full height rectangular opening castellated steel beam can prevent the failure mechanism of vierendeel. This results in the flexural capacity of the castellated beam higher than the original IWF profile. The flexural capacity of a castellated steel beam can be optimized by designing the hole width on the web section. This research aims to find out the effect of several values of castellated steel beam hole width on the flexural capacity. In this research, there are 4 castellated steel beam models whose flexural capacity values are calculated using the truss analysis and pushover analysis methods. Based on the calculation results, it can be concluded that the smaller the value of the hole width, the greater the flexural capacity of the castellated steel beam will be. The largest increase in flexural capacity from the original IWF to the castellated beam is 140.93%.

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Wang, Yuan Qing, Li Yuan Liu, Da Yi Ding, Yong Jiu Shi, and Hai Ying Wan. "Finite Element Analyses and Design Proposals on the Truss-to-Box Girder Connection Models of Xinqiao International Airport Terminal." Applied Mechanics and Materials 94-96 (September 2011): 724–30. http://dx.doi.org/10.4028/www.scientific.net/amm.94-96.724.

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Hefei Xinqiao International Airport Terminal is a steel structure consisting of long-span rigid frames, with 804m in length and about 161m in width at the widest part. The long-span frame consists of box columns, large curvature beams, tapered box beams and space trusses. The joints between space trusses and box beams named truss-to-box beam connections are the critical parts of the whole structure, because of the discontinuity in geometries and stiffness which result in high stress concentrations and complicated mechanical properties. GJ3-6, GJ3-5 and GJ3-1 of the airport terminal are modeled by ABAQUS. Structure internal forces at six load combinations of bearing capacity limit state are calculated. Lower chords of the landside connections sustain large tensions, while web members of the airside connections sustain large pressures. Since these truss bars are directly connected to cover plate of the box beam, better design details are recommended to reduce the stress concentrations caused by geometrical discontinuity.

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Subramani, T., and A. Periasamy. "Study on Behaviour of Stud Type Shear Connector in Composite Beam Using ANSYS." International Journal of Engineering & Technology 7, no. 3.10 (July 15, 2018): 54. http://dx.doi.org/10.14419/ijet.v7i3.10.15629.

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Composite plays a vital role in replacing the existing mild steel in reinforcement and exterior truss structure. This study proposed to design shear connector for joining concrete slab and steel section. Shear connectors has analyzed and predict the best connector for a particular composite beam with respect to static load and the amount of steel in the connector as a common aspect. The use of composite structures is increasingly present in civil construction works nowadays. Composite beams, especially, are structures which include substances, a metal phase placed in particular inside the tension region and a concrete phase, positioned in the compression go sectional location, both are related with the aid of steel gadgets called shear connectors. The main features of this connector are to permit the weight for the joint the beam-column, to restriction longitudinal slipping and uplifting on the factors interface the shear forces. Our project paper presents 3D numerical models of steel-concrete composite beams to simulate their structural behaviour, with emphasis on the beam column interface using Simulations software ANSYS 18.1 based on the Finite Element Method. Mostly these type of structures are widely used in the dynamic loading structures like bridges and high rise buildings.

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Luo, Lisheng, and Xiaofeng Zhang. "Flexural Response of Steel-Concrete Composite Truss Beams." Advances in Civil Engineering 2019 (June 12, 2019): 1–15. http://dx.doi.org/10.1155/2019/1502707.

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This paper presents an experimental and analytical study on the flexural response of a steel-concrete composite truss beam. This integrated unit consists of a triangular steel truss, a concrete slab on it, and stud connectors. Three simply supported composite trusses with different configurations of shear connection (η) were evaluated via three-point bending tests. The effects of the shear connectors’ configuration on the flexural response (i.e., load-deflection, load-slippage, and load-strain curves) of the composite trusses were examined. The commercial finite-element (FE) software ANSYS was employed to conduct numerical simulations. An FE model was developed for the composite truss and was validated using experimental results. A parametric study was performed to investigate the effect of the shear connectors’ configuration on the flexural response of the composite trusses. If η < 1, the bending capacity increased with η. In contrast, if η ≥ 1, the effect of η on the bending capacity was negligible. Finally, a design method based on the degree of the shear connection was proposed to predict the ultimate capacity of the composite truss, and the predictions agreed well with the experimental results.

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Ding, Ke Wei, and Ai Yu Yang. "Stress Analysis of Tall Steel Reinforced Concrete Cantilever Beam." Applied Mechanics and Materials 151 (January 2012): 286–90. http://dx.doi.org/10.4028/www.scientific.net/amm.151.286.

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With economic prosperity and social development, various kinds of unconventional concrete structure increases day by day, steel reinforced concrete structure has been widely used. The paper demonstrated the Hefei Yangtze-crossing Campaign Memorial Project, by comparing theoretical results with site monitoring data analysis results, summarized the variation of stress and strain distribution in the cantilever truss steel reinforced concrete beam structure. The main content of this paper introduced the study of steel reinforced concrete with the project to make conclusions that they would be significance to apply in the future similar projects for guidance and reference.

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Jiang, Zheng Rong, Mu Xu, Wei Ning Duan, Kai Rong Shi, Jian Cai, and Shi Tong Wang. "Nonlinear Finite Element Analysis of Beam String Structure." Advanced Materials Research 163-167 (December 2010): 2124–30. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.2124.

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Beam string structure (BSS), which is a new kind of semi-rigid hybrid system, composed of arch, strut and string, has been developed rapidly in long-span steel structures in recent years. Based on the principle of virtual work and Updated Lagrange, the formulas of geometric nonlinear F.E.M. for spatial beam element, cable element and truss element are derived respectively in this paper. Taking the one-way BSS model of the steel roof in Guangzhou International Convention and Exhibition Center as a computational example by using both linear and nonlinear analysis method, the analytical results show that it is appropriate when adopting the straight truss element with two joints and equivalent elastic modulus to simulate the cable element with small sag. Although the linear analysis can meet the requirement of practical engineering due to its weak nonlinearity of BSS, the nonlinear method is also important to improve the precision theoretically. The conclusions obtained may be helpful for the designers in similar projects.

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Qiang, Hu, Zhi Heng Deng, Lin Qian, and Dong Xiao Xu. "Analysis of Failure Mode and Ultimate Bearing Capacity of Steel Truss Coupling Beam." Advanced Materials Research 594-597 (November 2012): 824–27. http://dx.doi.org/10.4028/www.scientific.net/amr.594-597.824.

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A calculation model about failure mode and ultimate bearing capacity of steel truss coupling beam is proposed based on compatible distortion and balance conditions, second-order effect, elastic-perfectly plasticity and strain state about eight specimens when these specimens fail under low cyclic reversed loading. And then this model is applied to analyzing influences of height, span and chord stiffness on bearing capacity of truss. Some valuable results are obtained such as advantageous range of span-to-height ratio and influence laws of chord stiffness on ultimate capacity.

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Liu, Chun Cheng, and Qiang Sheng Xu. "Finite Element Model of High-Voltage Transmission Tower Confirmed." Applied Mechanics and Materials 459 (October 2013): 625–30. http://dx.doi.org/10.4028/www.scientific.net/amm.459.625.

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Model selection is carried out structural analysis Transmission Tower one of the priorities. Through the establishment of traditional beams - truss hybrid model, improved beam - beam hybrid model and frame model, a modeling analysis of angle steel tower cathead. First on the transmission tower modal analysis, and then the common wind conditions and ice conditions of the maximum stress and maximum displacement results are discussed, and then local analysis. Identify similarities and differences between the three models, discusses the advantages and disadvantages of the model to meet the design requirements of the situation and the results can be obtained more reasonable feasibility.

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Baijian, Tang, Shao Jianhua, Pei Xingzhu, and Gu Sheng. "Mechanical Performance of Mega Steel Frame-Prestressed Composite Bracing Structure." Open Civil Engineering Journal 8, no. 1 (March 7, 2014): 23–41. http://dx.doi.org/10.2174/1874149501408010023.

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The mega structure has been widely studied and applied due to the clear force transferring way, good structural integrity and flexible layout of diverse building functions. Based on the structure of mega truss or mega frame, the research and application of the mega structure with many kinds of bracing structures become a hot topic in recent years. Mega steel frame-prestressed composite bracing structure with a rigid-flexible composite bracing system composed of rigid Λ-shape steel brace and inverted Λ-shape flexible cable is a new kind of mega structure and this composite bracing system is set up in the mega steel frame. By establishing the three-dimensional finite element model and considering the material and geometric nonlinearity, the structural performance under static load in whole process was analyzed and the energy dissipation as well as failure mode under earthquake is also investigated for this new system in this paper. The results indicate that the lateral deformation is mainly decided by horizontal load and the corresponding curve of lateral displacement has the characteristic of flexure mode as a whole, whereas the deflection of mega beam is mainly governed by vertical load and pretension of cables. The internal force equilibrium of composite brace is decided by vertical load and the degree of force unbalance is about 15% when the fluctuation of vertical load is 20%, but the change of anti-symmetric horizontal load has no effect on the internal force equilibrium. The composite braces not only help the mega beam to bear the vertical load but also greatly enhance the lateral stiffness of main structure and so the lateral stiffness of whole system is relatively uniform. Due to the TMD effects of substructure and additional dampers, the seismic energy is mainly dissipated by dampers and substructure and then the main structure is able to maintain elastic. The desired failure mode of MFPCBS under lateral loads is as follows: the web members of mega beam appear to yield at first, and then the braces between mega column limbs, Λ-shape rigid bracing truss, floor beams between mega column limbs and mega column limbs in order.

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Lin, Wen-Shan, and Chen-Chang Kao. "Nonlinear Finite Element 2D Analysis for RC Beams Strengthened by Epoxy Bonded Steel Plates." Journal of Mechanics 19, no. 4 (December 2003): 409–19. http://dx.doi.org/10.1017/s1727719100003257.

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ABSTRACTThis paper presents the nonlinear finite element modeling of the global behavior for RC beam strengthened by externally epoxy bonded steel plates up to failure. In addition to the consideration of nonlinear behavior and cracking of concrete, the model involves interface element to capture not only the shear and normal stress concentration at the plate curtailment, but also the separation due to the exceeded peak shear and normal stress. The internal steel bar using truss element and the external steel plate using deformation theory of plastic have been confirmed by compare finite element solution with plastic theory. The proposed finite element solutions result in close correlation with experimental data available for RC beams strengthened by epoxy bonded steel plates with different thickness.

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Zhang, Zai Hua, Xing Ping Shu, and Ran He. "A New Kind of Modular Assembly Steel Structure System." Applied Mechanics and Materials 578-579 (July 2014): 741–44. http://dx.doi.org/10.4028/www.scientific.net/amm.578-579.741.

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As a new type of structure system suitable for the realization of building industrialization, assembly structure system is a trend in the development of steel structure engineering. In this paper, a kind of assembly truss beam steel frame system is proposed. The composition of system, the technology characteristic of components and connections are analyzed in detail. Meanwhile some problems need to be solved are also put forward.

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Cao, Dafu, Jiaqi Liu, Wenjie Ge, and Rui Qian. "Experimental Study on the Shear Performance of Steel-Truss-Reinforced Concrete Beam-Column Joints." Advances in Civil Engineering 2021 (May 13, 2021): 1–17. http://dx.doi.org/10.1155/2021/5580581.

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In order to study the influence of the axial compression ratio and steel ratio on the shear-carrying capacity of steel-truss-reinforced beam-column joints, five shear failure interior joint specimens were designed. The effect of different coaxial pressure ratios (0.1, 0.2, and 0.3) and steel contents on the strain, ultimate bearing capacity, seismic performance, and failure pattern of cross-inclined ventral and chord bars in the joint core area was investigated. The experimental results show that the load-displacement hysteretic curves of all test specimens exhibit a bond-slip phenomenon. With the increase of the axial compression ratio, the ultimate bearing capacity of the joint core increases by 3.4% and 5.9%, respectively. While the ductility decreases by 10.3% and 13.1%, and the energy consumption capacity decreases by 3.2% and 5.8%, respectively. The shear capacity and ductility of the member with cross diagonal ventral steel angle in the joint core are increased by 12.9% and 13.4%, respectively. The shear capacity and ductility of the joint can be significantly improved by increasing the amount of steel in the core area. The expression of shear capacity suitable for this type of joint is obtained by fitting analysis, which can be used as a reference for engineering design.

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Fu, Zhong-qiu, Bo-hai Ji, Wei Zhu, and Han-bing Ge. "Bending behaviour of lightweight aggregate concrete-filled steel tube spatial truss beam." Journal of Central South University 23, no. 8 (August 2016): 2110–17. http://dx.doi.org/10.1007/s11771-016-3267-x.

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Journal articles on the topic 'Truss steel beam'

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