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Structural performance of a base-isolated reinforced concrete building subjected to seismic pounding |
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| Authors: | Deepak R Pant Anil C Wijeyewickrema |
| Institution: | 1. Department of Civil and Environmental Engineering, Tokyo Institute of Technology, Tokyo, 152-8552 Japan;2. Department of Civil and Environmental Engineering, Tokyo Institute of Technology, Tokyo, 152-8552 Japan
Anil C. Wijeyewickrema, Department of Civil and Environmental Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8552, Japan. |
| Abstract: | The effects of seismic pounding on the structural performance of a base-isolated reinforced concrete (RC) building are investigated, with a view to evaluate the influence of adjacent structures and separation between structures on the pounding response. In particular, seismic pounding of a typical four-story base-isolated RC building with retaining walls at the base and with a four-story fixed-base RC building is studied. Three-dimensional finite element analyses are carried out considering material and geometric nonlinearities. The structural performance of the base-isolated building is evaluated considering various earthquake excitations. It is found that the performance of the base-isolated building is substantially influenced by the pounding. The investigated base-isolated building shows good resistance against shear failure and the predominant mode of failure due to pounding is flexural. Copyright © 2012 John Wiley & Sons, Ltd. |
| Keywords: | base-isolated RC building nonlinear analysis seismic pounding |