【摘要】 为了进一步研究后张预应力装配混凝土框架(post-tensioned energy dissipating,PTED框架)在不同地震动记录下的失效模式,对该结构进行了增量动力分析(IDA)。以Open SEES软件为平台,建立了四层三跨PTED框架非线性分析模型,选取三条代表性的地震动记录对其进行IDA分析,得到了三种不同的IDA曲线。结果表明:预应力筋提供良好的自复位能力;角钢提供良好的耗能能力;不同地震动记录下,PTED结构呈现三种不同的失效模式。更多还原

【Abstract】 To further study the failure modes for the post-tensioned precast prestressed precast concrete frame( post-tensioned energy dissipating,simplified as PTED frame),the Incremental Dynamic Analysis to the PTED frame were carried out( simplified as IDA). The nonlinear analytical model of fourstorey and three-span was constructed by using Open SEES software. Three representative records of ground motion were selected as the input of the IDA anslysis. Three kinds of IDA curves were obtained.The results shows that,the prestressing tendons provided self-centering capability,The angle steels provided dissipated energy capability. Three different failure modes of PTED frame were obtained under different ground motion records.更多还原