有速度脉冲的近场地震下偏心支撑钢框架抗震性态评估  

Seismic evaluation for inverted-V concentrically braced steel frames under near-field earthquake with velocity pulse

作　　者：肖俊俊[1] 顾强[1] 

机构地区：[1]苏州科技学院土木工程学院,江苏苏州215011

出　　处：《苏州科技学院学报（工程技术版）》2012年第2期50-54,62,共6页Journal of Suzhou University of Science and Technology （Engineering and Technology）

摘　　要：屈服点谱是一种新的位移-加速度反应谱,可用于结构抗震性态设计和性态分析。结构在近场地震动作用下的反应与远场地震作用明显不同,这是由近场地震动高能量的速度脉冲特征决定的。根据多条近场地震波构造了屈服点谱,对两个偏心支撑钢框架进行了强震下的性态评估。非线性时程分析结果验证了屈服点谱法用于近场地震评估的可信性。The yield point spectrum is a new response spectrum with displacement-acceleration format, and is applicable to the performance-based seismic design and evaluation. The response of a structure under the near-field earthquake is significantly different from that under the far-field earthquake, which is attributed to the fea-ture of the velocity pulse of high energy under the near-field earthquake. Based on various near-field earthquake waves, this paper constitutes YPS and presents the seismic evaluation of a couple of eccentrically braced steel frames under strong earthquake. The result from the non-linear time analysis verifies the credibility of YPS method applied to the seismic evaluation for the near-field earthquake.

关 键 词：屈服点谱 近场地震 偏心支撑 性态评估 峰值位移 层间位移角 

分 类 号：TU391[建筑科学—结构工程]