Study on the effect of the infill walls on the seismic performance of a reinforced concrete frame |
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| Authors: | Cuiqiang Zhang Ying Zhou Deyuan Zhou Xilin Lu |
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| Institution: | [1]Research Institute of Structural Engineering and Disaster Reduction, Tongji University, Shanghai 200092, China [2]State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China |
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| Abstract: | Motivated by the seismic damage observed to reinforced concrete (RC) frame structures during the Wenchuan earthquake, the
effect of infill walls on the seismic performance of a RC frame is studied in this paper. Infill walls, especially those made
of masonry, offer some amount of stiffness and strength. Therefore, the effect of infill walls should be considered during
the design of RC frames. In this study, an analysis of the recorded ground motion in the Wenchuan earthquake is performed.
Then, a numerical model is developed to simulate the infill walls. Finally, nonlinear dynamic analysis is carried out on a
RC frame with and without infill walls, respectively, by using CANNY software. Through a comparative analysis, the following
conclusions can be drawn. The failure mode of the frame with infill walls is in accordance with the seismic damage failure
pattern, which is strong beam and weak column mode. This indicates that the infill walls change the failure pattern of the
frame, and it is necessary to consider them in the seismic design of the RC frame. The numerical model presented in this paper
can effectively simulate the effect of infill walls on the RC frame. |
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| Keywords: | infill walls RC frame structure strong column and weak beam strong beam and weak column nonlinear time history analysis |
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