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Structural Engineering and Mechanics Volume 29, Number 3, June20 2008 , pages 259-278 DOI: https://doi.org/10.12989/sem.2008.29.3.259 |
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Seismic performance assessment of reinforced concrete bridge piers supported by laminated rubber bearings |
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T. H. Kim, Y. J. Kim and H. M. Shin
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| Abstract | ||
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This paper presents a nonlinear finite element procedure accounting for the effects of geometric as well as material nonlinearities for reinforced concrete bridge piers supported by laminated rubber bearings. Reinforced concrete bridge piers supported by laminated rubber bearings and carrying a cyclic load were analyzed by using a special purpose, nonlinear finite element program, RCAHEST. For reinforced concrete, the proposed robust nonlinear material model captures the salient response characteristics of the bridge piers under cyclic loading conditions and addresses with the influence of geometric nonlinearity on post-peak response of the bridge piers by transformations between local and global systems. Seismic isolator element to predict the behaviors of laminated rubber bearings is also developed. The seismic performance of reinforced concrete bridge piers supported by laminated rubber bearings is assessed analytically. The results show good correlation between the experimental findings and numerical predictions, and demonstrate the reliability and robustness of the proposed analytical model. Additionally, the studies and discussions presented in this investigation provide an insight into the key behavioral aspects of reinforced concrete bridge piers supported by laminated rubber bearings. | ||
| Key Words | ||
| reinforced concrete bridge piers; laminated rubber bearings; nonlinear material model; geometric nonlinearity; seismic isolator element; seismic performance. | ||
| Address | ||
| T. H. Kim and Y. J. Kim: Civil Engineering Research Team, Daewoo Institute of Construction Technology, 60 Songjuk-dong, Jangan-gu, Suwon, Gyeonggi-do, 440-210, Korea H. M. Shin: Dept. of Civil and Environmental Engineering, Sungkyunkwan University, 300 Cheoncheon-dong, Jangan-gu, Suwon, Gyeonggi-do, 440-746, Korea | ||