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Journal articles on the topic 'Tubular construction'

Author: Grafiati

Published: 4 June 2021

Last updated: 3 February 2022

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1

Packer, JA. "Tubular construction." Progress in Structural Engineering and Materials 2, no. 1 (January 2000): 41–49. http://dx.doi.org/10.1002/(sici)1528-2716(200001/03)2:1<41::aid-pse6>3.0.co;2-t.

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2

Huysmans, T., J. Sijbers, and V. Brigitte. "Automatic Construction of Correspondences for Tubular Surfaces." IEEE Transactions on Pattern Analysis and Machine Intelligence 32, no. 4 (April 2010): 636–51. http://dx.doi.org/10.1109/tpami.2009.93.

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3

Tizani, Walid M. K., Gwynne Davies, and Timothy J. McCarthy. "A construction-led design process for tubular trusses." Design Studies 15, no. 3 (July 1994): 248–59. http://dx.doi.org/10.1016/0142-694x(94)90012-4.

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4

Semko, Pavlo, Serhii Skliarenko, and Volodymyr Semko. "Concrete Filled Tubular Elements Joints Investigation." International Journal of Engineering & Technology 7, no. 3.2 (June 20, 2018): 494. http://dx.doi.org/10.14419/ijet.v7i3.2.14578.

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The stress-strain state and the bearing capacity of the dismountable joints of concrete filled tubular elements are investigated. The methods of calculation and constructive solutions of concrete filled tubular elements with joints are analyzed. Five new types of dismountable joints are proposed. Experimental studies of concrete filled tubular elements have been carried out. It was determined that the most effective for compression was a joint with a steel coupling and for bending the most effective was a joint with longitudinal ribs. The numerical modeling algorithm is presented; results are verified using experimental tests. A method for constructing N-M boundary dependences for concrete filled tubular structures is proposed. Bearing capacity diagrams for concrete filled tubular elements and their joints have been constructed. The costs of the materials needed to perform the joint as the example of a real construction for similar loads are analyzed.

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5

PENG, JUI-LIN, CHUNG-WEI WU, MING-HSIANG SHIH, and YEONG-BIN YANG. "EXPERIMENTAL STUDY OF LOAD CAPACITIES OF TUBULAR STEEL ADJUSTABLE SHORES USED IN CONSTRUCTION." International Journal of Structural Stability and Dynamics 13, no. 04 (May 2013): 1250063. http://dx.doi.org/10.1142/s0219455412500630.

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In this study, experimental tests were performed to investigate the load capacities of tubular steel adjustable shores in setups typically employed in construction sites, both for isolated units and combined systems. As for isolated units, the column curves of isolated tubular steel adjustable shores for a wide range were presented based on the test results. These curves can be used for interpolating the strength of tubular steel adjustable shores in design, instead of relying on extrapolation that may lead to uncertainties. The test results show that the overlap length between the connecting tube and base tube of the shore does not affect substantially the load capacity. Additionally, the load capacity of a 3-section tubular steel adjustable shore is lower than that of a 2-section shore. The load capacity of tubular steel adjustable shores decreases when No. 3 steel bars, instead of tube locks, are used. As for the combined systems, the reinforcing effect for a tubular steel adjustable shoring system with less than 16 shores is negligible when reinforced horizontally. For a tubular steel adjustable shoring system with four shores, the reinforcing effect is obvious when reinforced both horizontally and diagonally. This study also introduces the novel concept of upper and lower limit values of load capacity, which embrace the maximum and minimum strengths of all tested shoring members randomly selected for testing at the construction site. This concept can be potentially applied in shoring design.

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6

Popa, Dan Cristian, Vasile Ioan Gliga, and Lorand Szabo. "Construction of a New Type of Modular Tubular Machine." Advanced Engineering Forum 8-9 (June 2013): 437–44. http://dx.doi.org/10.4028/www.scientific.net/aef.8-9.437.

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A new type of tubular machine in modular construction that can work either like motor or generator is presented in the paper. It belongs to the transverse flux machines class and operates based on the variable reluctance principle. Two topologies of the machine, with and without permanent magnets (PM), are approached here. A prototype of the tubular machine with electromagnetic excitation, having a stator core built from laminated sheets and the mover core made of soft magnetic composite material, was built and is shown in the paper. The use of the new soft magnetic composite material, Somaloy 700 HR, having 3D magnetic isotropy, brings important advantages in building the structure. The innovative construction, implying the alternation of the magnetic pieces called modules with no-magnetic spacers, has very good performances. A prototype of this machine was built and a test bench equipped with control and monitoring devices in order to perform experimental tests. Some possible applications showing the potential of the proposed machine are also presented.

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7

Si, Wen, Pengyang Xin, Zhan-Ting Li, and Jun-Li Hou. "Tubular Unimolecular Transmembrane Channels: Construction Strategy and Transport Activities." Accounts of Chemical Research 48, no. 6 (May 27, 2015): 1612–19. http://dx.doi.org/10.1021/acs.accounts.5b00143.

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8

Bahadur, A., M. Zubair, and M. B. Khan. "Design, construction and evaluation of solarized airlift tubular photobioreactor." Journal of Physics: Conference Series 439 (June 10, 2013): 012036. http://dx.doi.org/10.1088/1742-6596/439/1/012036.

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9

Yin, Su Hua, and Ying Na Dong. "Construction Technology of Concrete Filled Steel Tubular in Shenyang Wanxin Building." Applied Mechanics and Materials 170-173 (May 2012): 3266–69. http://dx.doi.org/10.4028/www.scientific.net/amm.170-173.3266.

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Concrete filled steel tube is widely used in super high-rise steel structure, but there are many problem in the construction of concrete filled steel tube. With the construction of Wanxin building as an example, this paper described the selection of the construction program, and analyzed the disadvantages in construction such as the difficulties of concrete pumping and the problems of pipe blockage, pipe explosion and concrete curing during the process of construction. Based on structural characteristics and construction difficulties, the key technique of steel tube concrete construction are introduced in detail. It can provide significant reference and guide for super high-rise building construction.

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10

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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11

Tomczuk, Bronisław, and Andrzej Waindok. "Tubular Linear Actuator as a Part of Mechatronic System." Solid State Phenomena 147-149 (January 2009): 173–78. http://dx.doi.org/10.4028/www.scientific.net/ssp.147-149.173.

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Electromagnetic tubular linear actuators are very important in mechatronic systems. The new construction of the linear actuator is presented in the paper. Many calculations with magnetic field analysis have been carried out for the new construction of the object. It was a five-phase permanent magnet tubular linear actuator. The static and dynamic parameters of the actuator have been calculated and measured, as well. A good correlation between the results validates the mathematical modeling of the actuator.

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12

Pafcuga, Marian, Andrej Kapjor, David Hecko, and Martin Vantuch. "Numerical and CFD Design of Heat Exchanger Used to Biomass Combustion." MATEC Web of Conferences 328 (2020): 02005. http://dx.doi.org/10.1051/matecconf/202032802005.

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The article describes the design of a heat exchanger used for biomass combustion. The design takes into account simple maintenance of the exchanger, low input costs of construction and the highest possible efficiency. In the design is used the tubular type of heat exchanger. The construction consists of a tubular part - flue gas part, inter-tube space - heat transfer medium space. The output of the numerical model, CFD model is the heat transfer coefficient, heat exchanger power and final comparison of CFD and numerical model outputs.

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13

Samuel, Robello. "Technology Focus: Wellbore Tubulars (July 2021)." Journal of Petroleum Technology 73, no. 07 (July 1, 2021): 50. http://dx.doi.org/10.2118/0721-0050-jpt.

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How we think about the future of the pipe industry must evolve. How must tubular design and manufacturing change as we transition to clean energy? Geothermal energy is an area that needs attention and, further, needs very specific attention on tubulars. Tubulars are an important component in the construction of geothermal wells, and we must align our requirements for geothermal energy. Some of the main challenges encountered in geothermal wells are corrosion and scaling. Moreover, temperature becomes a major consideration for tubulars, even more so with the temperature excursion during geothermal production. Perhaps the critical aspect in the design of the geothermal wells involves casing selection and design. Beyond manufacturing casing pipes to withstand these problems, considering the manufacturing of other components, such as connections, float collars, and float shoes, also is essential. Thermal expansion and thermal excursion of casings are well-integrity concerns; thus, casing design is important for long-term sustainability of geothermal wells. Apart from thermal simulations, guidelines and software are needed to undergird the designs to withstand not only temperature excursions but also thermomechanical and thermochemical loadings. Engineered nonmetallic casings also provide an alternative solution because they provide the desired strength and corrosion resistance in addition to meeting the goals of sustainability. Undoubtedly, the future of the tubular industry is going to be revitalized. The question now is how we can retrofit existing abandoned wells for this purpose. Recommended additional reading at OnePetro: www.onepetro.org. SPE 199570 - Special Considerations for Well-Tubular Design at Elevated Temperatures by Gang Tao, C-FER Technologies, et al.

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14

Zhou, Yun Chuan, Jie Yang, Xiang Luo, and Sheng Yuan Yang. "Research upon Safety Management of Steel Tubular Scaffold with Couplers Formwork Support." Applied Mechanics and Materials 174-177 (May 2012): 3253–57. http://dx.doi.org/10.4028/www.scientific.net/amm.174-177.3253.

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Steel tubular scaffold with couplers formwork support is a key item in construction，there are accidents. Some actual problems of the construction scheme in drafting, examination and construction process were analyzed. The solutions in thinking and measures are put forward, the execution of the technical and organizational management is the key to security problem.

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15

Chen, Xi. "Design and Use of the Joint between Concrete-Filled Square Steel Tubular Special-Shaped Columns and Steel Beams." Key Engineering Materials 517 (June 2012): 870–74. http://dx.doi.org/10.4028/www.scientific.net/kem.517.870.

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Environmentally sustainable building construction has experienced significant growth during the past 10 years. The public is becoming more aware of the benefits of green construction, and green building is leading to changes in the way of owners, designers, contractors, and approach of the design, construction. Concrete-filled square steel tubular special shaped columns - steel beams residence installing efficient and light heat insulation wall is welcome for both owners and designers because of the columns having the same thickness with limb-filled walls, no-shocked indoor, easy to decoration and furniture layout, increasing in the actual using areas and saving carbon. The composite frame fully develops the merits of steel and concrete, and thus is reasonable and economical from both structural and construction viewpoints. The connection region as main force transfer component is key to the research of frame. Compared with the joint of ordinary reinforced concrete special shaped frame, the joint between concrete-filled square steel tubular special-shaped columns and steel beams has the advantage of better ductility , higher loading capacity, uncomplicated reinforcement disposing and convenient in construction. This paper discusses the features of concrete-filled square steel tubular special shaped columns - steel beams frame, and the design and use of beam-column joint. From the experimental study on seismic behavior of the joint, it is shown that the joint has strong energy dissipation capacity and higher loading capacity. So it is expected it could play an important role in residence structures. This study is helpful for further study of the design and use of the joint between concrete-filled square steel tubular special-shaped columns and steel beams.

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16

Huang, You Qian, Wan Zhen Wang, Wei Tao Wang, and Ke Ting Tong. "Fracture Mechanism and Ductility Construction of Joints of H-Style Beam-Square Tubular Column." Advanced Materials Research 446-449 (January 2012): 484–89. http://dx.doi.org/10.4028/www.scientific.net/amr.446-449.484.

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Numerical simulation and fracture analysis were performed on conventional joint of H-style beam-square steel tubular column based on suggested elliptical yield model. The modified coefficient of elliptical fracture model was obtained by equivalently calculating the effects of residual stress and flaws. Using the elliptical fracture model with equivalently calculating the effects of residual stress and disfigurement for evaluation, the parameters of slot holes and horizontal haunch at beam flanges on failure mode of joints of H-style steel beam-square steel tubular column were studied by finite element method. The results indicate that the plastic rotation of joints of H-style beam-square steel tubular column with slot holes and horizontal haunch at beam flanges reach 0.03rad and meet with the requirement of the interim guidelines FEMA, and the loading capacity decrease within 15% compared with that of the conventional joint.

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17

Wang, Gui Bing, Mei Ting Fan, and Yong Liu. "Concrete Filled Steel Tubular Arch Bridge Diseases and Protective Measures." Advanced Materials Research 1065-1069 (December 2014): 930–33. http://dx.doi.org/10.4028/www.scientific.net/amr.1065-1069.930.

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Bridge is the most modern transportation systems more see the composition of the form, the construction of bridge engineering helps to relieve the pressure on the ground transportation, realize the efficiency of regional traffic comprehensive improvement. Domestic vehicle number has doubled in recent years, frequent traffic activities make bridge is facing serious gravity load, and a variety of diseases, threatening the safety of the bridge deck vehicle. Construction units in construction phase, should pay attention to the maintenance of bridge structure disease treatment, put forward a practical and reliable solutions. Half through bridge were examined in this paper, based on an engineering example, analyzed the common deterioration problems of concrete filled steel tube arch bridge, the corresponding protective measures are put forward.

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18

OGAWA, Koji, Yoshiaki KUROBANE, and Tamaki MAEDA. "POST-BUCKLING BEHAVIOR OF CIRCULAR TUBULAR STRUTS." Journal of Structural and Construction Engineering (Transactions of AIJ) 60, no. 475 (1995): 137–44. http://dx.doi.org/10.3130/aijs.60.137_5.

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19

Chunhaviriyakul, Ponpong, Gregory A. MacRae, Dave Anderson, G. Charles Clifton, and Roberto T. Leon. "Suitability of CFT columns for New Zealand moment frames." Bulletin of the New Zealand Society for Earthquake Engineering 48, no. 1 (March 31, 2015): 63–79. http://dx.doi.org/10.5459/bnzsee.48.1.63-79.

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Composite steel-concrete construction uses steel and concrete together to provide the possibility of a system with better performance, and/or lower cost, than using either material alone. This paper firstly subjectively evaluates the advantages and disadvantages of a number of composite concrete filled tubular (CFT) column-connection systems proposed/used around the world in terms of their likely acceptance in moment frames in New Zealand. Then, the cost of a conventional one-way moment-resisting steel frame system is compared with a similarly behaving frame using rectangular concrete filled steel tubular (CFT) columns. It is shown for these studies conducted on one-way frames that composite CFT column construction with beam end-plate connections is generally more expensive than conventional steel column construction.

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20

Kim, Myoung-Mo, Yong-Myung Park, and Tae-Yang Yoon. "Tubular Stadium Lighting Tower, Korea." Structural Engineering International 7, no. 3 (August 1997): 185–86. http://dx.doi.org/10.2749/101686697780494833.

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21

Wang, Sibo, Bu Yuan Guan, and Xiong Wen David Lou. "Construction of ZnIn2S4–In2O3 Hierarchical Tubular Heterostructures for Efficient CO2 Photoreduction." Journal of the American Chemical Society 140, no. 15 (March 29, 2018): 5037–40. http://dx.doi.org/10.1021/jacs.8b02200.

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22

Bodea, Serban, Christoph Zechmeister, Niccolo Dambrosio, Moritz Dörstelmann, and Achim Menges. "Robotic coreless filament winding for hyperboloid tubular composite components in construction." Automation in Construction 126 (June 2021): 103649. http://dx.doi.org/10.1016/j.autcon.2021.103649.

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23

Sun, Hong Jun, and Li Hong Zhao. "Experimental Study on Strength of Connections to Concrete Filled Tubular in Fire." Advanced Materials Research 299-300 (July 2011): 743–46. http://dx.doi.org/10.4028/www.scientific.net/amr.299-300.743.

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Concrete filled tubular columns are widely used all over the world, due to their significant advantages, including attractive appearance, structural efficiency, reduced column footing, fast construction and high fire resistance without external fire protection. An experimental study has been carried out on the performance of joints between steel beams and concrete filled tubular columns in simple construction under fire conditions. The failure modes of the test specimens were always in the joint regions. Therefore, if the joints are appropriately designed and protected so that they possess sufficient strength, it is possible for the steel beam to develop catenary action and survive very high temperatures even without fire protection.

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24

Goñi, Wilder, Nehemias Maquin, José Rodríguez, and y. Ennio Morán. "Analysis of Constructive Errors in masonry confined in Highly Seismic Countries and Reinforcement of Walls with Galvanized Mesh." MATEC Web of Conferences 303 (2019): 04001. http://dx.doi.org/10.1051/matecconf/201930304001.

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In countries with high seismicity, such as those located in the Pacific belt of fire, great disasters are generated because many houses are not designed to resist seismic forces; this is because they have been built without any professional technical assistance and using low quality materials that make them more vulnerable to an earthquake. In developing countries such as Peru, the problem is recurrent, because more than 80% of homes are self- built, causing construction errors that lead to 70% of these homes have no guarantees to withstand a major earthquake; the importance of solving this problem lies in the need to identify construction errors to study methods of reinforcement. This work investigates 371 houses of confined masonry, the most used construction system in South America, finding as a result that the most important construction error is the structural use of the tubular brick; in view of this, it is proposed to reinforce the walls with a construction system made up of tubular bricks reinforced with galvanized wire mesh to increase resistance and improve ductility.

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25

Li, Zi Lin, and Pei Yuan Zhou. "Research on Overall Stability of Concrete-Filled Steel Tubular Bowstring Arch Bridge." Advanced Materials Research 243-249 (May 2011): 1988–94. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.1988.

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Based on the finite element theory, the computational model, one through concrete filled steel tube tied-arch bridge was established under the considerations of both geometrical non-linearity and material non-linearity. And using the ANSYS software to study the bridge's arch rib construction process and the overall stability after the complete construction, the results show that the full-bridge’s stability coefficient are larger than other concrete-filled steel tube arch bridge; the in-plane stiffness is larger than the out-plane stiffness, and the influence of material non-linearity on the stability is notable. The results provide a good reference for the similar bridge's design and construction.

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26

Sun, Wen Bo, Yi Qun Luo, and Wei Huang. "The Compressive Behavior of Horizontally Casted Concrete Filled Steel Tubular Members with Consideration of the Process of Concrete Casting." Advanced Materials Research 243-249 (May 2011): 45–50. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.45.

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Concrete casting effect and the hooping effect of concrete filled tubular members is considered in the study of this paper. Firstly, standard stress-strain relationship of concrete and steel is chosen to simulate others’ test, and meanwhile the calculation results by nonlinear finite element analysis are compared with the results of the test. Then the bearing capacity of horizontally casted concrete filled steel tubular members under axial compression is contrasted among different construction processes. Finally, the effect of slenderness ratio of concrete filled tubular members is studied so as to reveal the relationship between the bearing capacity and slenderness ratio.

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27

Li, Jun-Tao, Zong-Ping Chen, Jin-Jun Xu, Cheng-Gui Jing, and Jian-Yang Xue. "Cyclic behavior of concrete-filled steel tubular column–reinforced concrete beam frames incorporating 100% recycled concrete aggregates." Advances in Structural Engineering 21, no. 12 (February 7, 2018): 1802–14. http://dx.doi.org/10.1177/1369433218755521.

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Concrete-filled steel tubular structural members can be recognized as an effective mean to improve the mechanical behavior in terms of strength, stiffness, ductility, and energy dissipation for the initial recycle aggregate concrete deficiencies compared with natural aggregate concrete. A small-scale model of square concrete-filled steel tubular column–reinforced concrete beam frame realized employing 100% recycled coarse aggregates was tested under combined axial loads and cyclic reversed lateral flexure. The failure modes, plastic hinges sequence, hysteresis loop, skeleton curve, stiffness degeneration, energy dissipation capacity, and ductility of the frame were presented and analyzed in detail. The structural behavior of square concrete-filled steel tubular column–reinforced concrete beam frame with 100% recycled coarse aggregates was compared with circular concrete-filled steel tubular column–reinforced concrete beam frame made with 100% recycled coarse aggregates. A fiber-based program model for the nonlinear analysis of concrete-filled steel tubular column–reinforced concrete beam frames incorporating recycled coarse aggregates was developed using SeismoStruct, to highlight the effect of recycled coarse aggregate content on mechanical behavior of recycled aggregate concrete and the confinement effect provided by outer tubes on core concrete. The analysis results show that the numerical model can well simulate and predict the seismic behavior of concrete-filled steel tubular column–reinforced concrete beam frames with 100% recycled coarse aggregate content. Both experimental and numerical results demonstrate that concrete-filled steel tubular column–reinforced concrete beam frames with large content of recycled coarse aggregates have a receivable seismic performance, and it is feasible to apply and popularize recycled aggregate concrete into concrete-filled steel tubular structures in seismic regions.

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28

Zhou, Ji Jian. "Study on Application of Tubular Truss Structures in Engineering." Applied Mechanics and Materials 438-439 (October 2013): 1864–67. http://dx.doi.org/10.4028/www.scientific.net/amm.438-439.1864.

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This paper mainly focuses on the application of the large-span tubular truss structures in engineering. Taking a 60 meters cross-connections tubular truss with sliding supports used at one end of a cultural center project as an example, the problems of free vibration and optimum design of the structure are discussed in detail. The outcomes of this paper provide some reference for the design and construction of the congener structure

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29

Ding, Hong Yan, Xi Chen, Pu Yang Zhang, and Chao He. "Economic Evaluation of a New Type of Reinforced Concrete Structure with Fabricated Concrete Tubular Columns." Advanced Materials Research 671-674 (March 2013): 2999–3002. http://dx.doi.org/10.4028/www.scientific.net/amr.671-674.2999.

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A new type of reinforced concrete (RC) structure termed concrete filled fabricated concrete tubular (CFFCT) was economically evaluated. Construction schedule time and construction cost of CFFCT and RC columns were analyzed both in case studies of building structure and bridge structure. A comparative analysis was done on two types of columns by studying on single column and present value of total construction cost. The results show that use of CFFCT shortens the construction schedule time and lowers the total construction cost. The investigation of the multistory building shows that using CFFCT results in an average of 2.31% savings on total project cost, an average of 28.67% savings on total column costs, 25.12% savings on total project time period, and 45.22% savings on columns construction time period. And the investigation of the bridge shows that using CFFCT results in an average of 3.27% savings on total project cost, an average of 46.87% savings on total column costs, 15.68% savings on total project time period, and 29.90% savings on columns construction time period.

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30

Hu, Xiao, and Yong Tao Gao. "Capacity Analysis of Anti-Slide Pile with Concrete Filled Steel Tubular." Applied Mechanics and Materials 90-93 (September 2011): 23–27. http://dx.doi.org/10.4028/www.scientific.net/amm.90-93.23.

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Abstract. As the concrete filled steel tubular has a higher loading capacity, smaller section, stronger rigidity, better deformation and capacity of absorbing energy, besides of its easier construction without formworks, it has a perfect perspective of landslide treatment engineering, while served for anti-slide pile. This paper introduced concrete filled steel tubular briefly, focused on computing formulas of loading capacity and rigidity, and provides references to design of in landslide treatment.

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31

Huang, Fuyun, Yulong Cui, Rui Dong, Jiangang Wei, and Baochun Chen. "Evaluation on ultimate load-carrying capacity of concrete-filled steel tubular arch structure with preload." Advances in Structural Engineering 22, no. 13 (May 29, 2019): 2755–70. http://dx.doi.org/10.1177/1369433219850091.

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When casting wet concrete into hollow steel tubular arch during the construction process of a concrete-filled steel tubular arch bridge, an initial stress (due to dead load, etc.) would be produced in the steel tube. In order to understand the influence of this initial stress on the strength of the concrete-filled steel tubular arch bridge, a total of four single tubular arch rib (bare steel first) specimens (concrete-filled steel tubular last) with various initial stress levels were constructed and tested to failure. The test results indicate that the initial stress has a large influence on the ultimate load-carrying capacity and ductility of the arch structure. The high preloading ratio will reduce significantly the strength and ductility that the maximum reductions are over 25%. Then, a finite element method was presented and validated using the test results. Based on this finite element model, a parametric study was performed that considered the influence of various parameters on the ultimate load-carrying capacity of concrete-filled steel tubular arches. These parameters included arch slenderness, rise-to-span ratio, loading method, and initial stress level. The analysis results indicate that the initial stress can reduce the ultimate loading capacity significantly, and this reduction has a strong relationship with arch slenderness and rise-to-span ratio. Finally, a method for calculating the preloading reduction factor of ultimate load-carrying capacity of single concrete-filled steel tubular arch rib structures was proposed based on the equivalent beam–column method.

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32

Gatiyatov, I. Z., and L. S. Sabitov. "METHODS AND SYSTEMS CONTROL THE SUPPORTS OF THE TUBULAR RODS USED IN THE ENERGY CONSTRUCTION WHEN EXPOSED TO STATIC AND DYNAMIC LOADS." Proceedings of the higher educational institutions. ENERGY SECTOR PROBLEMS 20, no. 5-6 (August 5, 2018): 93–101. http://dx.doi.org/10.30724/1998-9903-2018-20-5-6-93-101.

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33

Xu, Youwu, Jian Yao, and Xin Sun. "Cold-formed elliptical concrete-filled steel tubular columns subjected to monotonic and cyclic axial compression." Advances in Structural Engineering 23, no. 7 (December 24, 2019): 1383–96. http://dx.doi.org/10.1177/1369433219894242.

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Concrete-filled steel tubular columns are widely used in structural systems, and elliptical concrete-filled steel tubular columns are receiving more and more attention. An experimental study on cold-formed elliptical concrete-filled steel tubular stub columns was carried out under monotonic and cyclic axial compression. The failure modes, axial load–displacement curves, ultimate loads, hoop strain–axial strain behavior, strength deterioration, and residual deformation were obtained and discussed. Complementary finite element models considering the complex non-uniform confinement between steel tube and concrete were developed and validated by experimental results. Then, the validated FE model was used to study the influence of aspect ratio, yield strength of steel, and compressive strength of concrete on the axial capacity of elliptical concrete-filled steel tubular stub columns. Finally, a relatively simple superposition method was put forward to predict the axial bearing capacity of elliptical concrete-filled steel tubular stub columns. Compared with the test data, both the numerical method and superposition method can generate accurate predictions.

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34

Chan, T. K., T. C. Fung, C. Y. Tan, and C. K. Soh. "Behaviour of reinforced tubular T-joints." Proceedings of the Institution of Civil Engineers - Structures and Buildings 146, no. 3 (August 2001): 263–74. http://dx.doi.org/10.1680/stbu.2001.146.3.263.

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35

Carter, D. J. "Developments in tubular daylight guidance systems." Building Research & Information 32, no. 3 (May 2004): 220–34. http://dx.doi.org/10.1080/0961321042000189671.

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36

Virlogeux, Michel, Emmanuel Bouchon, Jacques Berthellemy, and Jacques Resplendino. "The Antrenas Tubular Arch Bridge, France." Structural Engineering International 7, no. 2 (May 1997): 107–9. http://dx.doi.org/10.2749/101686697780494905.

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Zhao, X. L., and L. W. Tong. "New Development in Steel Tubular Joints." Advances in Structural Engineering 14, no. 4 (August 2011): 699–715. http://dx.doi.org/10.1260/1369-4332.14.4.699.

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Disney, Peter. "Book Review: Tubular Structures VII." International Journal of Space Structures 12, no. 1 (March 1997): 53. http://dx.doi.org/10.1177/026635119701200107.

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Li, Yong, and Yan Xu Wang. "Static Model Experiment Study on a Concrete-Filled Steel Tubular Arch Bridge." Key Engineering Materials 648 (June 2015): 61–71. http://dx.doi.org/10.4028/www.scientific.net/kem.648.61.

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It is well known that a lot of concrete filled steel tubular (CFST) arch bridges were built in China. Thus it became a main bridge type. Its architectural design shows much novelty, while the structural design is always conducted based on the finite element (FE) model analysis. Meanwhile there is no professional code for design and construction of this type of bridge. To overcome these disadvantages, scaled model tests are preferable to evaluate the mechanical behavior and provide guidelines for design and construction of prototype bridges. In this paper, an irregular CFST arch bridge as the prototype was introduced and a 1/16 scaled bridge model was designed and constructed according to the similarity theory. The experimental study on the scaled model was aimed to simulate the construction stages and mechanical behavior under moving loads. The test results are used to make comparison with the construction monitoring and bearing-capacity load test of the prototype. The analysis shows that the experimental results of the scaled model are close to the measured results of the prototype. The scaled model test was proved to be valuable for the pre-camber setup of the arch rib and the tension optimization of the suspenders and for the operation safety.

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Yuan, Fang, Hong Huang, and Mengcheng Chen. "Behaviour of square concrete-filled stiffened steel tubular stub columns under axial compression." Advances in Structural Engineering 22, no. 8 (February 8, 2019): 1878–94. http://dx.doi.org/10.1177/1369433218819584.

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As China’s infrastructure grows rapidly, the use of concrete-filled steel tubular structures for engineering applications is attracting increasing interest owing to their high section modulus, high strength and good seismic performance. However, for concrete-filled steel tubular members with large width-to-thickness ratio, steel tubes are prone to outward buckling when they are subjected to axial compression. Welding of longitudinal stiffeners on the steel tubes is one of the most efficient approaches for delaying local buckling and thus improving the mechanical performance of such type of concrete-filled steel tubular members. This study attempts to investigate the axial compression behaviour of concrete-filled stiffened steel tubular members with square sections through experimental study and finite element analysis. First, 14 concrete-filled steel tubular stub columns, with different width-to-thickness ratios of steel tube and depth-to-thickness ratios of stiffener, were subjected to axial compression loads and tested. It was found that the use of stiffeners increases the ultimate strength and improves the stability of the stub columns. Later, an investigation on the behaviour of the stiffened concrete-filled steel tubular stub columns was carried out through a three-dimensional finite element analysis. The accuracy of the finite element analysis model was verified by the test results. A parametric study was conducted to further evaluate the stiffening schemes that influence the axial compression strength. Finally, the research findings were synthesized into a new simplified model to predict the load-carrying capacity of stiffened concrete-filled steel tubular stub columns that allows for large width-to-thickness ratios.

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Zou, Zhong Quan, Xu Wang, and Zhi Mei Wang. "Application of Ultrasonic Testing in Concrete Filled Steel Tubular Arch Bridge." Advanced Materials Research 639-640 (January 2013): 1025–28. http://dx.doi.org/10.4028/www.scientific.net/amr.639-640.1025.

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Concrete Filled Steel Tube(CFST) is widely used in civil engineering structures because of its superior mechanical performance. Yet the mechanical behavior of CFST is highly depended on the construction quality of the filled concrete. Hence it is very important for the inspection of the construction quality of the filled concrete in CFST structures. In this paper, the ultrasonic testing technique was used to detect the defect of the filled concrete of a CFST arch bridge. During the inspection, the ultrasonic transducer was moved along the circumference of the cross-section of the arch, and the defect of the concrete was comprehensively judged by detecting the change of sonic time, sonic amplitude and sonic frequency. Based on the analysis of the ultrasonic transmission path, the influences of different defects on the sonic time, sonic amplitude and sonic frequency were discussed. The detecting results were verified by core-drilling method. The verification showed that different kinds of defects defected by ultrasonic testing was in good accordance with the drilling samples, which demonstrates the adaptability of the ultrasonic detection technique in the construction quality inspection of CFST structures.

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Neganov, Dmitry A., Evgeny P. Studenov, Sergey V. Skorodumov, and Vladislav A. Solovyev. "Study of the construction of hydraulic stands for testing of tubular products." SCIENCE & TECHNOLOGIES: OIL AND OIL PRODUCTS PIPELINE TRANSPORTATION 7, no. 2 (April 30, 2017): 31–41. http://dx.doi.org/10.28999/2541-9595-2017-7-2-31-41.

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Lu, Wen, Junling Shen, Peng Zhang, Yijun Zhong, Yong Hu, and Xiong Wen (David) Lou. "Construction of CoO/Co‐Cu‐S Hierarchical Tubular Heterostructures for Hybrid Supercapacitors." Angewandte Chemie International Edition 58, no. 43 (October 21, 2019): 15441–47. http://dx.doi.org/10.1002/anie.201907516.

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Lu, Wen, Junling Shen, Peng Zhang, Yijun Zhong, Yong Hu, and Xiong Wen (David) Lou. "Construction of CoO/Co‐Cu‐S Hierarchical Tubular Heterostructures for Hybrid Supercapacitors." Angewandte Chemie 131, no. 43 (September 12, 2019): 15587–93. http://dx.doi.org/10.1002/ange.201907516.

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Waindok, Andrzej. "Determination of Temperature in the Construction of Permanent Magnet Tubular Linear Actuator." Solid State Phenomena 214 (February 2014): 113–20. http://dx.doi.org/10.4028/www.scientific.net/ssp.214.113.

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The calculation results for the thermal field of the permanent magnet tubular linear actuator (PMTLA) have been presented in the paper. For the analysis of heating, four different mathematical field models have been created and compared. Each of them uses the finite element method (FEM). In the most simplify model only the standard convective heat transfer coefficient has been implemented. In the most sophisticated model, thermal radiation, convective heat transfer and dependence of the coil resistance vs. temperature have been included. In all models the Joule losses have been assumed as the heat source. The numerical models have been verified experimentally with using the infrared camera and by measuring the coil resistance. Using the most precise model, the nominal current value has been determined for PMTLAs with two different permanent magnet types: NdFeB and SmCo. The conclusions are valuable in the designing process of many actuators with permanent magnets.

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Li, Guoxing, Yuliang Li, Xuemin Qian, Huibiao Liu, Haowei Lin, Nan Chen, and Yongjun Li. "Construction of Tubular Molecule Aggregations of Graphdiyne for Highly Efficient Field Emission." Journal of Physical Chemistry C 115, no. 6 (January 26, 2011): 2611–15. http://dx.doi.org/10.1021/jp107996f.

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Guo, Kai, Botan Liu, Xue Li, Hui Liu, and Chunjiang Liu. "Flow pattern construction-based tubular heat transfer intensification using calculus of variations." Chemical Engineering Science 152 (October 2016): 568–78. http://dx.doi.org/10.1016/j.ces.2016.06.046.

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Wu, Chao, Zhujing Zhang, and Yu Bai. "Connections of tubular GFRP wall studs to steel beams for building construction." Composites Part B: Engineering 95 (June 2016): 64–75. http://dx.doi.org/10.1016/j.compositesb.2016.03.081.

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Dowbor, Piotr, Hagen Meltzer, and Andrzej Mróz. "An algorithm for the construction of exceptional modules over tubular canonical algebras." Journal of Algebra 323, no. 10 (May 2010): 2710–34. http://dx.doi.org/10.1016/j.jalgebra.2009.12.027.

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Li, Zhao, Jingwei Gao, Jindong Xu, and Guofeng Du. "Stress monitoring and impact bearing capacity of circular concrete-filled steel tubular short columns under axial impact loads." Advances in Structural Engineering 23, no. 3 (September 23, 2019): 565–77. http://dx.doi.org/10.1177/1369433219876205.

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Compared with the traditional reinforced concrete columns, the concrete-filled steel tubular columns with a better restraint effect of steel tube on core concrete showed higher bearing capacity and ductility under static loads. However, except static loads, concrete-filled steel tubular columns are commonly exposed to the extreme dynamic loads including earthquake, explosion, and impact. The study on dynamic behavior of concrete-filled steel tubular columns is extremely significant to ensure their safety against such dynamic loads. In this article, a polyvinylidene fluoride piezoelectric smart sensor was proposed to monitor the axial impact bearing capacity of specimen based on stress monitoring under impact loads. The concrete-filled steel tubular columns with smart sensor embedded were tested, which considered the effects of both hammer impact heights and steel tube thickness on the axial impact bearing capacity. The impact bearing capacity calculated based on the monitoring results of polyvinylidene fluoride sensor is in good agreement with the measured values, which verifies the feasibility of this method. Moreover, it is found that the failure mode of concrete-filled steel tubular short columns is the local tearing failure or local buckling. In addition, non-linear finite element models were also established to study the effect of different parameters on the axial bearing capacity. The simplified formula for calculating the axial impact bearing capacity of concrete-filled steel tubular short columns was proposed based on the large amount verified model. Through the comparison between the calculation value and the test value, the formula is found to well reflect the axial impact bearing capacity of concrete-filled steel tubular short columns, which provides a reference for similar research.

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