Seismic performance of prestressed concrete stand structure supporting retractable steel roof

Abstract

The seismic behavior of a structural system composed of pre-stressed concrete stand supporting a retractable steel roof was studied, which is typically based on the prototype of engineering project of Shanghai Qizhong Tennis Center. By elasto-plastic finite element analysis and shaking table test, the following were investigated: the effects of roof configurations in opening and closing, the effect of pre-stress on the structural seismic response, and the failure mechanism of the spatial stand frame systems featured with circularly arranged columns and inverse-cone type stands. It was found that the roof status has great effect on the natural period, vibration modes, and seismic response of the whole structure, the stand response to horizontal seismic excitation is stronger in roof opening configuration than in closing state, and the response mode is dominantly translational rather than rotational, though the stand is characterized by its fundamentally torsional vibration mode. The study indicated that the pre-stressed inverse-cone stands can keep the system from global side-sway collapse under gravity loads, even in the case that most columns loose moment capacity.

Keywords

retractable steel roof / prestressed concrete / seismic performance / failure mode / inelastic response / shaking table test

References

[1] Su Xiaozu. Seismic Performance Research on Prestressed Concrete Frames. Shanghai: Shanghai Science and Technology Press, 1997 (in Chinese)

[2] Lu Zhitao, Xue Weichen. Seismic performance research on prestressed concrete portal and bent frame structures. China Civil Engineering Journal, 1996, 29(5): 57-62 (in Chinese)

[3] Mo Y L, Hwang W L. The effect of prestress losses on the seismic response of prestressed concrete frames. Computers and Structures, 1996, 59(6): 1013-1020

[4] Chen Yiyi, Zhang Dazhao, Xue Weichen, Lu Wensheng, Lin Yinru. Shaking table model test for circular spatial and prestressed structure. Earthquake Engineering and Engineering Vibration, 2006, 26(6): 158-163 (in Chinese)

[5] Wilson E L. Three Dimensional Static and Dynamic Analyses of Structures. Berkeley: Computers and Structures, Inc., 2000

[6] Cao Zi, Xue Suduo. Seismic Theory and Design for Spatial Strucutures. Beijing: Science Press, 2005 (in Chinese)

[7] National Standard of the People’s Republic of China. GB50011-2001 Code for Seismic Design of Buildings. Beijing: China Architecture and Building Press, 2001 (in Chinese)

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2014 Higher Education Press and Springer-Verlag Berlin Heidelberg