Elasto-plastic analysis and experimental study of cantilevered and large-span concrete frame-wall structure

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Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (8) : 83-92.

GE Kang,CHEN Shiming

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Abstract

The culture and art center discussed here was a RC frame-wall structure characterized with large cantilevered area and large space, the maximum span of large cantilevered area and large span were 22m and 30m respectively, which was irregular both in plan and elevation. Using Nosacad and Abaqus, the structural analysis model was established in order to simulate the nonlinear behavior and study deformations, distribution of plastic hinges, and mechanism under the rare earthquake of magnitude of 7. Based on the analysis, the cantilevered area is sensitive to vertical earthquake; tension damage mainly occurs at the bottom of the shear wall and cantilevered stories; the maximum inter story drifts are less than seismic design requirement of Chinese code. A 1/30 scale model was tested on shaking table to study the seismic behavior of this kind structure through cutting the podium of the structure, comparison between the model before and after the cut was conducted to verify reasonability of this design method. The test result meets well with the result of finite element analysis. Finally, according to response and damage stare of the structure, suggestion for structure optimization is given.

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large cantilevered structure / elasto-plastic time history analysis / model design / seismic response / shaking table test;

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GE Kang,CHEN Shiming. Elasto-plastic analysis and experimental study of cantilevered and large-span concrete frame-wall structure[J]. Journal of Vibration and Shock, 2015, 34(8): 83-92

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