【摘要】 研发单跨悬挑外廊改为双跨的加固方法,以静力弹塑性分析所优选的截面柱,在外廊式单跨框架结构挑梁处增加柱子,基于增量动力分析(IDA)方法对原结构和加柱结构从损伤和倒塌储备系数(CMR)两方面进行抗震分析,结果表明在遭遇相同地震动作用后,加柱结构的损伤程度及抗倒塌能力均优于原结构。更多还原

【Abstract】 The aim of the study is to develop the strengthening approach that changes the structure with cantilevered gallery from single-span into double-span,which can provide the basis for the seismic strengthening on gallery type single-span frame.Based on incremental dynamic analysis method,study the damage and collapse margin ratio of structure reinforced with the approach that add columns to gallery of former frame,contrast to former structure.The results show that structure added columns picked by nonlinear static analysis is superior to the former structure on the damage and collapse margin ratio,with the same ground motion effect.更多还原