有速度脉冲的近场地震下偏心支撑钢框架抗震性态评估

英文篇名：Seismic evaluation for inverted-V concentrically braced steel frames under near-field earthquake with velocity pulse
中文刊名：苏州科技学院学报(工程技术版)
英文刊名：Journal of Suzhou University of Science and Technology(Engineering and Technology)
作者：肖俊俊 ; 顾强
英文作者：LI Liangwei ; GU Qiang(School of Civil Engineering ; SUST ; Suzhou 215011 ; China)
中文关键词：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
英文关键词：near-filed earthquake ; velocity pulse ; yield point spectra ; inverted-V concentrically braced steel frame ; seismic evaluation ; peak evaluation ; interstroy drift indices
出版日期：2012-06-15
机构：苏州科技学院土木工程学院;
年：2012
期：02
出版单位：苏州科技学院学报(工程技术版)

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。
A long period velocity pulse in the near-fault earthquake can dramatically change the structure's response,leading to the momentary lateral movement of the structure.YPS is used to estimate the peak displacement and interstory drift indices(IDI) of the two inverted-V concentrically braced steel frames,and a contrast is made between the peak displacement of the structure and IDI estimated by YPS method with the results estimated by time-history analysis.Finally,the paper evaluates the credibility of YPS method applied to seismic evaluation.

引文

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