DESIGN BASE SHEAR CAPACITY OF HIGH-RISE STRUCTURES

摘要：

The strength calculating of sections of structural elements under minor earthquake are conducted in Chinese code, and it fails to consider the structural base shear capacity demand under moderate or major earthquake. In this paper displacement-based seismic design theory is used to obtain the reasonable design base shear capacity that can ensure the structure satisfying its bearing capacity demand under each earthquake hazard level. The multi-degree-of-freedom (MDOF) system is transfbrmed into equivalent single-degree-of-freedom (ESDOF) system, and the ESDOF system is assumed to be perfect elasto-plasticity. Based on the structural target lateral displacement, the actual base shear capacity demand of each performance level could be determined by capacity spectrum method (CSM) and the maximum is regarded as the structural actual base shear capacity demand. The over-strength factor is defined as the ratio of actual base shear capacity to design base shear capacity.The actual base shear capacity demand divided by over-strength factor equals to the design base shear capacity which can ensure that the structure satisfies its performance objective.

关键词： Perfect elasto-plasticity Capacity spectrum method Actual base shear capacity Design base shear capacity

作者: Li Xin Xing-Wen Liang Ming-Ke Deng

作者单位: Key Laboratory for Structural Engineering and Earthquake Resistance of China Education Ministry, Xian Univ. of Arch. & Tech. , Xian 710055, P.R. China

会议类型: 国际会议

会议名称: 第十届国际结构工程青年学者研讨会(The Tenth International Symposium on Structural Engineering for Young Experts)

会议地点: 长沙

会议语种:英文

页码: 196-201

在线出版日期: 2008-10-19（万方平台首次上网日期，不代表论文的发表时间）