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Journal articles on the topic 'Rc-member'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

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1

SHIMAZAKI, Kazushi. "ACTUAL MEMBER TESTS OF THE EXISTING RC BUILDING." Journal of Structural and Construction Engineering (Transactions of AIJ) 81, no. 719 (2016): 91–99. http://dx.doi.org/10.3130/aijs.81.91.

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2

Choi, Chang‐Koon, and Hyo‐Gyoung Kwak. "Optimum RC Member Design With Predetermined Discrete Sections." Journal of Structural Engineering 116, no. 10 (October 1990): 2634–55. http://dx.doi.org/10.1061/(asce)0733-9445(1990)116:10(2634).

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3

ICHINOSE, Toshikatsu. "TRUSS MECHANISM IN CRITICAL REGION OF RC MEMBER." Journal of Structural and Construction Engineering (Transactions of AIJ) 60, no. 475 (1995): 129–35. http://dx.doi.org/10.3130/aijs.60.129_2.

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4

Kim, Il Sun, Yoon Suk Choi, Chan Kyu Lee, and Eun Ik Yang. "Analytical Study on the Flexural Behavior of Reinforced Concrete Beam with Mineral Admixture under Calcium Leaching Degradation." Materials Science Forum 940 (December 2018): 123–27. http://dx.doi.org/10.4028/www.scientific.net/msf.940.123.

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Calcium leaching degradation could be happened in reinforcement concrete member due to the contact with pure water in underground condition. Thus, it is needed to evaluate the resistance of calcium leaching for concrete mixed with mineral admixtures. So, in this paper, to evaluate the flexural behavior in RC member with mineral admixture under calcium leaching degradation, we investigated the effect of calcium leaching using the non-linear finite-element program. From the results, the load capacity and flexible rigidity of a degraded RC member decrease when the degradation level increases with leaching period. And, regardless of the type of mineral admixtures, finite-element-method analysis effectively showed the characteristics of calcium leaching damaged RC beam.

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5

ITO, Kazuyuki, and Satoshi ITO. "Reliability of RC-member for flexure and axial load." Journal of the Society of Materials Science, Japan 36, no. 410 (1987): 1272–78. http://dx.doi.org/10.2472/jsms.36.1272.

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6

Shah, Ismail, Li Jing, Shahid Ayaz, Waqas Ali, Abdullah Abdullah, and Nauman Khan. "Retrofitting of RC Beam Structure Member by using CFRP." International journal of Engineering Works 7, no. 10 (October 16, 2020): 350–54. http://dx.doi.org/10.34259/ijew.20.710350355.

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The research has been lead relating the use of carbon fibre-reinforced polymer (CFRP) sheets in retrofitting and strengthening of the reinforced concrete member. The present research was conducted by using the epoxy to reinforced concrete beams retrofitted and strengthened for flexural strength by using CFRP sheet. The selected cross-section of the beam having 2400 mm length with 150 mm width and 225 mm height and the beam tension reinforcement on the bottom was set on 2#4bar@1.5" with the 38.1 mm clear cover was set to the main flexural reinforcement. The studied beam was focused on flexural behaviour. The experimental study has shown that while the using of CFRP with epoxy will improve the rigidity and durability of the concrete beam. Their great deformability greatly improves the seismic properties of the beam structures. Under the reinforced RC beams showed a very large deflection by control beam before their failure. By using CFRP externally the rigidity of retrofitted and strengthened beams can be improved.

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7

Wu, Chengqing, Deric John Oehlers, and Ian Day. "Layered Blast Capacity Analysis of FRP Retrofitted RC Member." Advances in Structural Engineering 12, no. 3 (June 2009): 435–49. http://dx.doi.org/10.1260/136943309788708338.

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8

FUKADA, Kazuyuki, Kyuichi MARUYAMA, and Kazuyuki TAKENAKA. "Connecting Method of FFU Member to RC Member and Its Effectiveness in Mechanical Behavior." Doboku Gakkai Ronbunshu, no. 620 (1999): 95–107. http://dx.doi.org/10.2208/jscej.1999.620_95.

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9

Li, Zuo Hua, Jun Teng, and Xue Feng He. "Damage Analysis Model for RC Members Based on Level of Material." Advanced Materials Research 163-167 (December 2010): 1262–67. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.1262.

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This paper presents a numerical strategy to model nonlinear damage behavior of RC members based on level of material. The first part of the paper presents a numerical model of the RC member based on the Timoshenko multifiber beam elements and non-linear damage constitutive laws for concrete, and the effective three dimensional fiber beam-column element model is developed for the nonlinear damage analysis of RC members with VUEL subroutine based on ABAQUS/Explicit platform. In the second part, a nonlinear damage analysis for RC members is established by analyzing the sections of fiber beam column elements, and the member damage index through statistical analysis of concrete fibers damage is defined in the extreme section of beam elements, which can describe the nonlinear damage behavior of RC members under any loadings. Accuracy of the model is identified preliminarily by comparing with the analysis results of solid elements, the results shows that it seems now possible to use this approach to investigate numerically the nonlinear damage behavior of RC members based on level of material.

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10

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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11

ITO, Kazuyuki, and Satoshi ITO. "Reliability of RC-Member. VI. Strength Reduction Factor of RC-Member Considering Lateral Deformation and Variation of Material Strength under Eccentric Axial Load." Journal of the Society of Materials Science, Japan 42, no. 482 (1993): 1299–305. http://dx.doi.org/10.2472/jsms.42.1299.

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12

Yamamoto, Takashi, Satoshi Takaya, and Toyo Miyagawa. "Influence of Corrosion Distribution on Estimation of Flexural Loading Capacity of Corroded RC Beams." Journal of Disaster Research 12, no. 3 (May 29, 2017): 478–86. http://dx.doi.org/10.20965/jdr.2017.p0478.

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A load carrying capacity of the reinforced concrete (RC) member is degraded by the corrosion of reinforcing steel bars due to chloride ion ingress. A lot of researches on the effect of corrosion in the longitudinal tensile reinforcing steel bars on the load carrying behavior have been available up to now. Accurate and quantitative estimation of capacity, however, is often difficult, because of the non-uniformity of corrosion in the member. Thus, a relationship between the spatial distribution of corrosion in the reinforcement including its scatter and the flexural loading capacity of RC member with such distribution of corrosion should be clarified so that the flexural capacity of corroded RC member can be estimated accurately. On the other hand, in case of the practical RC member under the corrosive environment, it should be considered that the flexural capacity often have to be derived from not a large number of inspection data on cross sectional areas of corroded reinforcements. So, in this study, a flexural loading test was performed by using RC beam specimens with the corroded tensile reinforcements provided the distribution of sectional areas. An estimation method of the flexural capacity of corroded RC beam was also shown, considering the distribution and its scatter in sectional areas of corroded reinforcements under the limited inspection data. Furthermore, the estimation of the longitudinal distribution of the cross sectional area of corroded reinforcement was performed by the spatial interpolation using Kriging method. Test results showed the yield and maximum load capacity in the corroded RC beam decreased as the corrosion rate increased. The failure mode of rupture in the reinforcement was shown in the large corrosion. The proposed estimation method was able to lead the safe evaluation of those experimental flexural capacities, determining the appropriate longitudinal characteristic value of the cross sectional area of corroded reinforcement. The flexural capacity can be also safely calculated using the characteristic value of diameters estimated by the corrosion crack width on the surface of the concrete, while the ratio of the experimental flexural capacity to the estimated one decreased as the corrosion loss increased. The distribution of bar diameters in the corroded reinforcement was able to be roughly estimated by using Kriging method. However, it was suggested that the measurement points close to the minimum bar diameter should be included to estimate the flexural capacity on the safe side.

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13

Chaudhary, Ranjit Kumar, Tathagata Roy, and Vasant Matsagar. "Member and structural fragility of reinforced concrete structure under fire." Journal of Structural Fire Engineering 11, no. 4 (May 22, 2020): 409–35. http://dx.doi.org/10.1108/jsfe-02-2019-0015.

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Purpose Despite recognizing the significance of risk-based frameworks in fire safety engineering, the usual approach in structural fire design is largely member/component level, wherein effect of uncertainties influencing the fire resistance of structures are not explicitly considered. In this context, a probabilistic framework is presented to investigate the vulnerability of a reinforced concrete (RC) members and structure under fire loading scenario. Design/methodology/approach The RC structures exposed to fire are modeled in a finite element (FE) platform incorporating material and geometric nonlinearity, in which the transient thermo-mechanical analysis is carried out by suitably incorporating the temperature variation of thermal and mechanical properties of both concrete and steel rebar. The stochasticity in the system is considered in structural resistance, thermal and fire model parameters, and the subsequent fragility curves are developed considering threshold limit state of deflection. Findings The fire resistance of RC structure is reported to be significantly lower in comparison to the RC members, thereby illustrating the current prescriptive design approaches based on studies of structural member behavior to be crucial from a safety and reliability point of view. Practical implications The framework developed for the vulnerability assessment of RC structures under fire hazard through FE analysis can be effectively used to estimate the structural fire resistance for other similar structure to enhance safety and reliability of structures under such extreme threats. Originality/value The paper proposes a novel methodology for vulnerability assessment of three-dimensional RC structures under fire hazard through FE analysis and provides comparison of the structural fragility with fragility developed for structural members. Moreover, the research emphasizes to assume 3D behavior of the structure rather than the approximate 2D behavior.

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14

Liu, Tingjin, Honghao Huang, and Yubing Yang. "Crack Detection of Reinforced Concrete Member Using Rayleigh-Based Distributed Optic Fiber Strain Sensing System." Advances in Civil Engineering 2020 (July 25, 2020): 1–11. http://dx.doi.org/10.1155/2020/8312487.

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Early detection of crack is critical for the maintenance of reinforced concrete (RC) structures. In this study, a distributed optical fiber (DOF) sensing system with Rayleigh Optical Frequency Domain Reflectometry (OFDR) technique was deployed to a member of RC structure in a full-scale laboratory experiment, which was subjected to a monotonic lateral load. With the aid of a high space resolution (up to 1 mm) and measurement accuracy (±1 micro strain) interrogator (OSI-S by Semicon), continuous strain measurements inside of the RC member are elaborately implemented. The result of crack detection by the analysis of the measured tensile strain profiles is in excellent agreement with the visually observable cracks mapped during the test. This confirms the ability of the optical fiber inside of RC members to capture cracks on concrete surface. Moreover, the recognition of crack orientation and depth is accomplished by comparing strain measurements of optical fibers installed at multiple locations.

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15

ITO, Kazuyuki, and Satoshi ITO. "Estimation of reliability of RC-member under eccentric axial load." Journal of the Society of Materials Science, Japan 38, no. 435 (1989): 1434–40. http://dx.doi.org/10.2472/jsms.38.1434.

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16

Kobayashi, Koichi, and Keitetsu Rokugo. "Mechanical performance of corroded RC member repaired by HPFRCC patching." Construction and Building Materials 39 (February 2013): 139–47. http://dx.doi.org/10.1016/j.conbuildmat.2012.05.013.

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17

Bai, Li Li, and Zhen Qing Wang. "Residual Bearing Capacity of Reinforced Concrete Member after Exposure to High Temperature." Advanced Materials Research 368-373 (October 2011): 577–81. http://dx.doi.org/10.4028/www.scientific.net/amr.368-373.577.

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After boundary conditions of member and thermal parameters of materials are determined, ANSYS software is utilized to analyze the maximum temperature distribution in the member under different fire duration. The equivalent cross-section economization method is given to calculate residual bearing capacity of RC member after exposure to high temperature, here, strength of reinforcement is considered as invariant, and the original section area is regarded as reduced. The numerical results are in good agreement with the experiment results of other reference, so appliance of the method is proved, Based on these, some parameters have significant influences on reduced coefficient of residual bearing capacity, such as sectional dimension, fire duration time, strength of reinforcement and concrete，ratio of reinforcement，thickness of fire-protection layer, which are analyzed and theory basis is supplied on safe monitor, repair and reinforcement of RC member after exposure to high temperature.

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18

Sun, Hua Ming, Xin Gang Zhou, and Hai Zhen Bao. "The Experimental Study of Post-Embedded RC Bending Members with Inorganic Anchoring Material under Repeated Load." Advanced Materials Research 446-449 (January 2012): 3446–51. http://dx.doi.org/10.4028/www.scientific.net/amr.446-449.3446.

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The experiment of post-embedded RC bending members with inorganic anchoring material and integral casting RC member under repeated load is conducted for the parameters with anchorage depth(15D,20D) and concrete strength grade(C20,C30). Comparing and analyzing the experimental phenomenon and data, the failure mechanism, anchorage behavior, the bearing capacity and seismic behavior of these members.

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19

Zhou, Xin Gang, Hua Fang, Jun Yin Yan, and Peng Zhu. "The Study on Bond and Anchorage Behavior of RC Flexural Members with Inorganic Adhesive Powder." Applied Mechanics and Materials 166-169 (May 2012): 1696–701. http://dx.doi.org/10.4028/www.scientific.net/amm.166-169.1696.

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To study the anchorage performance of the inorganic post-installed RC flexural members in flexural test, this paper simulates the stress state of the inorganic post-installed RC flexural members in practical projects. Through cyclic loading test, the anchorage performance of the inorganic post-installed RC flexural members in the bending tensile conditions is checked. This paper studies the anchorage performance of the post-installed steel at the state of bending tension, such as: adhesion stress, bond-slip relationship, the load carrying capacity, deformation behavior of the flexural member, and compare with those of normal member. The result indicates that with anchorage length of 20D in flexure member, the load carrying capacity of the inorganic post-installed reinforced concrete is apparently worse to those of normal members under repeated loading test; In case that anchorage length is invariable, load carrying capacity can be significantly enhanced through improving the concrete strength level. The anchorage zone is easily damaged, and the steel is easily slipped, which result in the decrease of the load carrying capacity, so some measures must be taken if inorganic adhesive powder is used in practical projects.

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20

Wang, Yong, Martin Belluš, Andrea Ehrlich, Máté Mile, Neva Pristov, Petra Smolíková, Oldřich Španiel, et al. "27 Years of Regional Cooperation for Limited Area Modelling in Central Europe." Bulletin of the American Meteorological Society 99, no. 7 (July 2018): 1415–32. http://dx.doi.org/10.1175/bams-d-16-0321.1.

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AbstractThis paper describes 27 years of scientific and operational achievement of Regional Cooperation for Limited Area Modelling in Central Europe (RC LACE), which is supported by the national (hydro-) meteorological services of Austria, Croatia, the Czech Republic, Hungary, Romania, Slovakia, and Slovenia. The principal objectives of RC LACE are to 1) develop and operate the state-of-the-art limited-area model and data assimilation system in the member states and 2) conduct joint scientific and technical research to improve the quality of the forecasts.In the last 27 years, RC LACE has contributed to the limited-area Aire Limitée Adaptation Dynamique Développement International (ALADIN) system in the areas of preprocessing of observations, data assimilation, model dynamics, physical parameterizations, mesoscale and convection-permitting ensemble forecasting, and verification. It has developed strong collaborations with numerical weather prediction (NWP) consortia ALADIN, the High Resolution Limited Area Model (HIRLAM) group, and the European Centre for Medium-Range Weather Forecasts (ECMWF). RC LACE member states exchange their national observations in real time and operate a common system that provides member states with the preprocessed observations for data assimilation and verification. RC LACE runs operationally a common mesoscale ensemble system, ALADIN–Limited Area Ensemble Forecasting (ALADIN-LAEF), over all of Europe for early warning of severe weather.RC LACE has established an extensive regional scientific and technical collaboration in the field of operational NWP for weather research, forecasting, and applications. Its 27 years of experience have demonstrated the value of regional cooperation among small- and medium-sized countries for success in the development of a modern forecasting system, knowledge transfer, and capacity building.

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21

Li, Wen Sheng, and Yi Heng He. "Comprehensive Evaluation of In-Service RC Flexural Member′s Reliability Based on Attribute Mathematics." Advanced Materials Research 163-167 (December 2010): 3009–14. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.3009.

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When the reliability analysis of in-service RC flexural member is carried on, an expert evaluation or AHP (analytical hierarchy process) for evaluation is commonly used, but human factors are big. This paper presents a comprehensive evaluation method of a existing RC flexural member’s reliability on the basis of attribute mathematics. According to the actual measured values of each index in the evaluation system, using a mathematical method to calculate weight, and build a comprehensive quantitative analysis model. Example analysis shows that this method can effectively identify and finely distinguish the reliability of in-service RC flexural members, which be much more objective and scientific compared with other previous methods.

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22

Seo, Soo-Yeon. "Bond Strength of Near Surface-Mounted FRP Plate in RC Member." Journal of the Korea Concrete Institute 24, no. 4 (August 31, 2012): 415–22. http://dx.doi.org/10.4334/jkci.2012.24.4.415.

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23

Takayama, Hirofumi, Junichi Niiyama, Tetsuya Mishima, Akira Suzuki, and Tadatomo Watanabe. "Experimental Study on Effect of Plate Anchorage Reinforcement on RC Member." Doboku Gakkai Ronbunshu, no. 592 (1998): 1–11. http://dx.doi.org/10.2208/jscej.1998.592_1.

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24

IZUMO, Kenji, Noboru SAEKI, and Hiroshi OHNUMA. "Estimating Shear Strength of RC and PRC Member with Fiber Sheets." Doboku Gakkai Ronbunshu, no. 655 (2000): 23–33. http://dx.doi.org/10.2208/jscej.2000.655_23.

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25

YAMAMOTO, Takashi, Atsushi HATTORI, and Toyoaki MIYAGAWA. "A Study on RC Member Strengthened with Longitudinal Prestressed Concrete Jacket." Doboku Gakkai Ronbunshu, no. 683 (2001): 1–12. http://dx.doi.org/10.2208/jscej.2001.683_1.

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26

Dymiotis, Christiana, Andreas J. Kappos, and Marios K. Chryssanthopoulos. "Seismic Reliability of RC Frames with Uncertain Drift and Member Capacity." Journal of Structural Engineering 125, no. 9 (September 1999): 1038–47. http://dx.doi.org/10.1061/(asce)0733-9445(1999)125:9(1038).

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27

Yuan, Fang, and Yu-Fei Wu. "Application of RC flexural theorems for member design under elevated temperature." Engineering Structures 201 (December 2019): 109762. http://dx.doi.org/10.1016/j.engstruct.2019.109762.

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28

Moon, Jiho, Dawn E. Lehman, Charles W. Roeder, Hak-Eun Lee, and Tae-Hyung Lee. "Analytical Evaluation of Reinforced Concrete Pier and Cast-in-Steel-Shell Pile Connection Behavior considering Steel-Concrete Interface." Advances in Materials Science and Engineering 2016 (2016): 1–14. http://dx.doi.org/10.1155/2016/4159619.

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The seismic design of bridges may require a large-diameter deep pile foundation such as a cast-in-steel-shell (CISS) pile where a reinforced concrete (RC) member is cast in a steel casing. In practice, the steel casing is not considered in the structural design and the pile is assumed to be an RC member. It is partially attributed to the difficulties in evaluation of composite action of a CISS pile. However, by considering benefits provided by composite action of the infilled concrete and the steel casing, both the cost and size of CISS pile can be reduced. In this study, the structural behavior of the RC pier and the CISS pile connection is simulated by using an advanced 3D finite element (FE) method, where the interface between the steel and concrete is also modeled. Firstly, the FE model is verified. Then, the parametric study is conducted. The analysis results suggest that the embedment length and the friction coefficient between the steel casing and the infilled concrete affect the structural behavior of the RC pier. Finally, the minimum embedment length with reference to the AASHTO design guideline is suggested considering the composite action of the CISS pile.

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29

Kawabata, Yuichiro, Mitsuyasu Iwanami, Ema Kato, and Hiroki Goda. "OS11F019 High Speed Full-field Strain Measurement of RC Member Subjected to Dynamic Load." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2011.10 (2011): _OS11F019——_OS11F019—. http://dx.doi.org/10.1299/jsmeatem.2011.10._os11f019-.

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30

Wan, Hai Tao, and Peng Li. "Test Research on Seismic Performance of Column." Applied Mechanics and Materials 166-169 (May 2012): 1058–61. http://dx.doi.org/10.4028/www.scientific.net/amm.166-169.1058.

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Reinforced concrete (RC) column component is a very important lateral force-resisting member which is widely used in China. Its seismic behavior has a great impact on the seismic performance of the overall structure. Damage of some reinforced concrete frame structures under the earthquake is caused by the damage of columns, So RC columns are an essential seismic members. The paper introduces the design of RC column specimen, mechanical properties of materials, production of RC column specimen, test method, loading device, loading system, the contents of measurement and data acquisition in detail. From the above analysis, it is obvious that the test is the most effective means of studying the seismic performance of column.

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31

ITO, Kazuyuki, Satoshi ITO, and Kazuo YAMAMOTO. "Reliability of RC-Member. VII. Estimation of Reliability on Flexural Design Strength of Double Reinforced Concrete Member." Journal of the Society of Materials Science, Japan 44, no. 499 (1995): 457–63. http://dx.doi.org/10.2472/jsms.44.457.

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32

Tamai, Hiroki, and Yoshimi Sonoda. "Numerical Studies on Cumulative Damage of RC Members under Repeated Impact Loading." Applied Mechanics and Materials 82 (July 2011): 320–25. http://dx.doi.org/10.4028/www.scientific.net/amm.82.320.

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We have tried to develop the simple FE analysis method based on continuum damage mechanics to quantitatively evaluate the impact behaviour and the cumulative damage of RC beam under repeated impact loading. As a result, it has been found that the cumulative damage and residual displacement of RC beam under repeated impact load can be properly evaluated, but the crack propagation cannot be evaluated by using the proposed method. This paper presents the following matters: (1) Numerical investigation on the impact behaviour and cumulative damage of RC beam under repeated impact loading by using the proposed method. (2) Numerical investigation of the relationship between cumulative kinetic energy of repeated impact loading and cumulative damage of RC members. (3) Investigation on improved points of our existing proposed method to evaluate the crack path of RC member under repeated impact.

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33

Ng, Pui Lam, Jeffery Yuet Kee Lam, and Albert Kwok Hung Kwan. "NONLINEAR MULTILEVEL ANALYSIS OF REINFORCED CONCRETE FRAMES." Engineering Structures and Technologies 7, no. 4 (April 4, 2016): 168–76. http://dx.doi.org/10.3846/2029882x.2016.1150793.

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Full range analysis of reinforced concrete (RC) members covering the post-crack and post-peak regimes is important for obtaining the deformation response and failure mode of structural members. When a RC member is subject to an increasing external load, the critical sections would exhibit cracking and/or softening. Due to stress relief effect in the proximity of crack opening and plastic hinging, unloading may occur at the adjacent regions. The variable stress states of discrete sections would lead to sectional variation of stiffness, which could not be accounted for by conventional structural analysis methods. In this paper, a nonlinear multilevel analysis method for RC frames whereby the frame members are divided into sub-elements and sectional analysis is utilised to evaluate stiffness degradation and strength deterioration is developed. At sectional level, the secant stiffness is determined from moment-curvature relation, where the curvature is evaluated based on both transverse displacements and section rotations of the frame member. Unloading and reloading behaviour of concrete and reinforcing steel is simulated. In implementing the multilevel analysis, secant iteration is performed in each step of displacement increment to obtain the convergent solution satisfying equilibrium. Numerical example of RC frame is presented to demonstrate the applicability and accuracy of the proposed nonlinear multilevel analysis method.

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34

Xie, Yong Ping, Lei Jia, and Gang Sun. "Review on Seismic Behavior of RC Columns." Applied Mechanics and Materials 353-356 (August 2013): 2092–96. http://dx.doi.org/10.4028/www.scientific.net/amm.353-356.2092.

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Column is the key member of the seismic structures, after the earthquake destroyed, not only cause column serious economic damage, and will cause a large number of casualties. For studying the seismic behavior and size effect of full-scale reinforced concrete columns. A comprehensive summary of the experimental results is undertaken to evaluate the seismic behavior of RC concrete columns, including test equipment and load method and mode of failure and Seismic behavior. It is concluded that the ductility and shear capacity of RC mainly depends on shear span ratio, axial load ratio and stirrup ratio. But the seismic behavior of large scale RC columns has no systematic studied.

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35

Huang, Jin Lin, Pei Yan Huang, and Jin Hui Xie. "Study on Flexural Performance of RC Beams Strengthened with Bonded Prestressed CFL." Applied Mechanics and Materials 578-579 (July 2014): 1338–42. http://dx.doi.org/10.4028/www.scientific.net/amm.578-579.1338.

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Based on experimental research and calculation theory of flexural bearing capacity, a method for calculating the ultimate load bearing of normal section member strengthened with prestressed CFL is proposed. Static load experimental results of two beams show that when prestress level is 20%, the cracking load and yield load of RC beams strengthened with prestressed CFL are 37.5% and 39.3% respectively. It is larger than that of RC beam strengthened with nonprestressed CFL.

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36

Martin, Mark D., Geraldine A. Hancock, Barbora Richardson, Peter Simmons, Cornelius Katona, Eleanor Mullan, and Martin Orrell. "An Evaluation of Needs in Elderly Continuing-Care Settings." International Psychogeriatrics 14, no. 4 (December 2002): 379–88. http://dx.doi.org/10.1017/s1041610202008578.

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This article describes the met and ummet needs of elderly residents of nursing care (NC) and residential care (RC) settings. Thirty-four residents of an RC home and 40 residents of two NC settings were assessed. Each resident and a respective staff member were interviewed using the Camberwell Assessment of Need for the Elderly (CANE) to indicate the resident's current met and unmet needs. The Clifton Assessment Procedure for the Elderly–Behaviour Rating Scale (CAPE-BRS) was completed by the staff member to indicate the participant's current level of dependency. In addition, the Mini-Mental State Examination was administered to participants and DSM-IV diagnosis was recorded. A high number of needs were found in both RC and NC settings, the level of dependency being proportional to level of need. There was a core set of needs in both samples related to difficulties with accommodation, food preparation, and self-care. Both NC and RC homes were meeting these needs; however, RC residents had a significantly greater level of unmet need for suitable daytime activities. The greatest predictor of type of setting was gender and there were significantly more females in RC. Controlling for gender, participants in NC had greater levels of dependency, particularly problems with apathy and social skills, as measured on the CAPE-BRS. It is possible that the greater level of social needs in NC residents had led to their placement in the more specialized NC settings. On the other hand, NC settings may be left caring for a group of residents that, because of their specific needs, have been difficult to place into RC. These findings have clinical implications for the future development of continuing care for the elderly. This study also highlighted that there is a substantial need for specialist services to address the unmet needs in these two types of continuing-care settings, such as interventions for social disturbances in NC and suitable daytime activities in RC. The CANE is a useful instrument to evaluate such needs in long-term-care settings.

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Sokolov, Aleksandr, Gintaris Kaklauskas, Ronaldas Jakubovskis, Mantas Juknys, Romualdas Kliukas, Pui Lam Ng, and Viktor Gribniak. "Experimental Investigation of Tension Stiffening in RC Ties." Advances in Materials Science and Engineering 2016 (2016): 1–8. http://dx.doi.org/10.1155/2016/6965932.

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The increasing application of high-performance materials in civil engineering led to the development of reinforced concrete (RC) structures with reduced cross sections and increased spans. In such structures serviceability limit state often becomes the governing condition of the design. Present study investigates the deformation behaviour of high-strength RC ties reinforced with high-grade bars. Experimental investigation was carried out measuring the postcracking stiffness of the specimens at high strain levels. It was found that, despite the reduction in stiffness, a considerable part of the average tensile stresses were carried by the concrete at the advanced loading stages, thus effectively stiffening the RC member.

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Salys, Donatas, Gintaris Kaklauskas, and Viktor Gribniak. "MODELLING DEFORMATION BEHAVIOUR OF RC BEAMS ATTRIBUTING TENSION-STIFFENING TO TENSILE REINFORCEMENT." Engineering Structures and Technologies 1, no. 3 (September 30, 2009): 141–47. http://dx.doi.org/10.3846/skt.2009.17.

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After cracking, the stiffness of the member along its length varies, which makes the calculation of deformations complicated. In a cracked member, stiffness is largest in the section within the uncracked region while remains smallest in the cracked section. This is because in the cracked section, tensile concrete does not contribute to the load carrying mechanism. However, at intermediate sections between adjacent cracks, concrete around reinforcement retains some tensile force due to the bond-action that effectively stiffens member response and reduces deflections. This effect is known as tension-stiffening. This paper discusses the tension-stiffening effect in reinforced concrete (RC) beams. Numerical modelling uses the approach based on tension-stiffening attributed to tensile reinforcement. A material model of reinforced steel has been developed by inverse analysis using the moment-curvature diagrams of RC beams. Total stresses in tensile reinforcement consist of actual stresses corresponding to the average strain of the steel and additional stresses due to tension-stiffening. The carried out analysis employed experimental data on RC beams tested by the authors. The beams had a constant cross section but a different amount of tensile reinforcement. It has been shown that additional (tension-stiffening) stresses in the steel depend on the area of reinforcement. However, the resulting internal forces are less dependent on the amount of reinforcement.

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Xu, Ning, Bin Xu, Xiang Zeng, Zhou Jiang, and Jun Ming Chen. "Dynamic Load-Displacement Behavior of Rc Shear Walls under Different Loading Rates: Tests and Simulations." Advanced Materials Research 163-167 (December 2010): 1780–85. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.1780.

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As a typical structural member, the dynamic behavior of RC shear walls under seismic dynamic loads and/or strong winds is a critical topic. In recent years, with the development of test facilities and numeric techniques, efforts have been made to study the dynamic behavior of RC shear walls under dynamic loadings experimentally and numerically. But available test results on the dynamic behavior of RC shear walls are limited because of the limitation of the large-scale test facilities for dynamic tests. In this paper, test on four RC shear walls under rapid loads are conducted and a finite element model of RC shear walls through introducing the strain rate effect to the concrete damaged plasticity model in ABAQUS is established to simulate the dynamic behavior of the four specimens tested. Through comparing the simulation result with the test result, it is clear that the developed dynamic damage plastic constitutive model of concrete can be employed to simulate the nonlinear behavior of RC walls with acceptable accuracy under dynamic load.

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Li, Guibing, Aihui Zhang, and Yugang Guo. "Effect of Preload Level on Flexural Load-carrying Capacity of RC Beams Strengthened by Externally Bonded FRP Sheets." Open Civil Engineering Journal 9, no. 1 (July 31, 2015): 426–34. http://dx.doi.org/10.2174/1874149501509010426.

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Most of the laboratory tests investigated the flexural performance of un-preloaded or undamaged RC beams strengthened with CFRP composites. However, in engineering applications, the structural member must carry a certain load or damage. There is a lack of systematical investigations on the effects of preload or damage level on the flexural load-carrying capacity of CFRP-strengthened RC beams. This paper tested 22 RC beams to investigate the influence of preload level on flexural load-carrying capacity of CFRP-strengthened RC beams. The test variables are preload level, amount of CFRP sheets, tension rebar ratio, and concrete strength. The test results show that if the preload level is not more than 80% of the yielding strength of the original beam, the preload or damage level does not influence the flexural load-carrying capacity of CFRP-strengthened RC beams. However, the ultimate flexural load-carrying capacity is significantly poor than that of RC beam strengthened under a preload level not more than 80% of the yielding strength, if the RC beams are strengthened under a preload level more than 90% of the yielding strength.

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Ahmad, Afaq, Nikos D. Lagaros, and Demetrios M. Cotsovos. "Neural Network-Based Prediction: The Case of Reinforced Concrete Members under Simple and Complex Loading." Applied Sciences 11, no. 11 (May 28, 2021): 4975. http://dx.doi.org/10.3390/app11114975.

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The objective of this study is to compare conventional models used for estimating the load carrying capacity of reinforced concrete (RC) members, i.e., Current Design Codes (CDCs), with the method based on different assumptions, i.e., the Compressive Force Path (CFP) method and a non-conventional problem solver, i.e., an Artificial Neural Network (ANN). For this purpose, four different databases with the details of the critical parameters of (i) RC beams in simply supported conditions without transverse steel or stirrups (BWOS) and RC beams in simply supported conditions with transverse steel or stirrups (BWS), (ii) RC columns with cantilever-supported conditions (CWA), (iii) RC T-beams in simply supported conditions without transverse steel or stirrups (TBWOS) and RC T-beams in simply supported conditions with transverse steel or stirrups (TBWS) and (iv) RC flat slabs in simply supported conditions under a punching load (SCS) are developed based on the data from available experimental studies. These databases obtained from the published experimental studies helped us to estimate the member response at the ultimate limit-state (ULS). The results show that the predictions of the CFP and the ANNs often correlate closer to the experimental data as compared to the CDCs.

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Carriere, M., P. J. Heffernan, R. G. Wight, and A. Braimah. "Behaviour of steel reinforced polymer (SRP) strengthened RC members under blast loadThis paper is one of a selection of papers in the Special Issue on Blast Engineering." Canadian Journal of Civil Engineering 36, no. 8 (August 2009): 1356–65. http://dx.doi.org/10.1139/l09-053.

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During the past decade, significant research has been carried out on the strengthening of reinforced concrete (RC) slabs, beams, and columns using externally bonded carbon fibre reinforced polymer (CFRP) sheets. Steel reinforced polymer (SRP) sheets have recently been proposed as an alternative to CFRP to strengthen reinforced concrete beams. This paper reports experimental and numerical results of RC beams and beam-columns transversely wrapped with SRP and tested under blast load. A total of 10 scaled RC members were tested at a variety of blast wave intensities. Detailed observations are reported and validated against numerical models created in AUTODYN for the unstrengthened RC members. The SRP wraps were resilient in the near-field blast range and enhanced the ductility of the concrete likely through enhanced confinement. Member capacity could be increased by the wraps in failure modes dominated by concrete crushing. AUTODYN appears able to reasonably predict the behaviour of the RC members when loaded by blast.

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NAKAMURA, Hikaru, Hiroki FURUHASHI, Yoshihito YAMAMOTO, and Taito MIURA. "EVALUATION OF SHEAR STRENGTH DEGRADATION OF RC MEMBER SUBJECTED TO CYCLIC LOADING." Journal of Japan Society of Civil Engineers, Ser. E2 (Materials and Concrete Structures) 71, no. 1 (2015): 48–57. http://dx.doi.org/10.2208/jscejmcs.71.48.

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ITO, Kazuyuki, and Satoshi ITO. "Probabilistic study on reduction factor of RC-member under eccentric axial load." Journal of the Society of Materials Science, Japan 39, no. 445 (1990): 1411–16. http://dx.doi.org/10.2472/jsms.39.1411.

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ITO, Kazuyuki, and Satoshi ITO. "Reduction Factor of RC-Member Considering Lateral Deformation under Eccentric Axial Load." Journal of the Society of Materials Science, Japan 41, no. 468 (1992): 1382–88. http://dx.doi.org/10.2472/jsms.41.1382.

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NAKANO, Katsuhiko, Yasuhiro MATSUZAKI, Motoharu SUZUKI, and Kouji FUKUMOTO. "STUDY ON SHEAR TRANSFER IN THE CONNECTION OF HALF PRECAST RC MEMBER." Journal of Structural and Construction Engineering (Transactions of AIJ) 65, no. 533 (2000): 135–42. http://dx.doi.org/10.3130/aijs.65.135_3.

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TSUJI, Yukikazu, Mitsutoshi YAMAGUCHI, and Masashi IKEDA. "HORIZONTAL SHEARING STRENGTH BETWEEN GROUT MORTAR AND STEEL PLATE ENCLOSED RC MEMBER." Cement Science and Concrete Technology 63, no. 1 (2009): 168–74. http://dx.doi.org/10.14250/cement.63.168.

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Zhang, Yongxing, Shu Bai, Qingbin Zhang, Haibo xie, and Xueming Zhang. "Failure behavior of strain hardening cementitious composites for shear strengthening RC member." Construction and Building Materials 78 (March 2015): 470–73. http://dx.doi.org/10.1016/j.conbuildmat.2015.01.037.

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Kim, Seungho, Dong-Eun Lee, Yonggu Kim, and Sangyong Kim. "Development and Application of Precast Concrete Double Wall System to Improve Productivity of Retaining Wall Construction." Sustainability 12, no. 8 (April 23, 2020): 3454. http://dx.doi.org/10.3390/su12083454.

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The construction of most apartment underground parking lots utilizes reinforced concrete (RC) structures composed mainly of rebar work and formwork. RC structures lower construction efficiency and significantly delay the construction because they require a large number of temporary materials and wooden formwork. In this study, a precast concrete double wall (PCDW) system was developed to address the existing problems of RC structures and to improve the productivity of retaining wall construction. PCDW is a precast concrete (PC) wall in which two thin concrete panels are connected parallel to each other with truss-shaped reinforcement between them. PCDW can contribute to securing integrity, reducing the delay in construction, and improving quality. An overall process for the member design and construction stage of the PCDW system was proposed, and its improvement effects were examined regarding various aspects in comparison to the RC method.

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Haroon, Muhammad, Seungbum Koo, DongIk Shin, and Changhyuk Kim. "Torsional Behavior Evaluation of Reinforced Concrete Beams Using Artificial Neural Network." Applied Sciences 11, no. 10 (May 14, 2021): 4465. http://dx.doi.org/10.3390/app11104465.

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Artificial neural networks (ANNs) are an emerging field of research and have proven to have significant potential for use in structural engineering. In previous literature, many studies successfully utilized ANNs to analyze the structures under different loading conditions and verified the accuracy of the approach. Several studies investigated the use of ANNs to analyze the shear behavior of reinforced concrete (RC) members. However, few studies have focused on the potential use of an ANN for analysis of the torsional behavior of an RC member. Torsion is a complex problem and modeling the torsional fracture mechanism using the traditional analytical approach is problematic. Recent studies show that the nonlinear behavior of RC members under torsion can be modeled using ANNs. This paper presents a comprehensive analytical and parametric study of the torsional response of RC beams using ANNs. The ANN model was trained and validated against an experimental database of 159 RC beams reported in the literature. The results were compared with the predictions of design codes. The results show that ANNs can effectively model the torsional behavior of RC beams. The parametric study presented in this paper provides greater insight into the torsional resistance mechanism of RC beams and its characteristic parameters.

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