【作者】 杨红； 闻奇光； 王志军；

【Author】 YANG Hong1 WEN Qiguang1 WANG Zhi-jun1 (1.Faculty of Civil Engineering, Chonqing University, Chonqing 400045, China)

【机构】 重庆大学土木工程学院；

【摘要】 Pushover是得到广泛关注的评估结构抗震性能的简化方法,其近似程度受到多种因素影响,选择合理的侧向力分布形式是关键之一。本文以按我国规范设计的八度区二级抗震等级典型钢筋混凝土框架为例,以OpenSees为平台,进行了大样本地震波罕遇烈度作用下的非线性动力反应分析,以及不同侧向力分布模式的Pushover分析。通过将Pushover结果与大样本时程分析的统计特征进行对比,着重于考察结构的局部地震反应,研究了不同侧向力分布模式的模拟效果。更多还原

【Abstract】 Pushover analysis is a popular concerned simplified method for evaluating seismic performance of structures, several factors affect its approximation, and laternal load pattern is one of the key. A typical reinforced concrete frame which was designed strictly according to the provisions of the second aseismic level for regions of 8 seismicity prescribed by Chinese building codes was chosen as example, a series of nonlinear dynamic response analyses of this frame under a large number of rare earthquake waves, and pushover analyses under three typical lateral load patterns were performed base on the OpenSees framework. Focusing on local seismic responses of the frame, the results of pushover analysis were compared with the statistical characteristic values of nonlinear dynamic response analyses, simulating effect of the pushover analysis under three three lateral load patterns were studied.更多还原