预制混凝土楼梯对框架结构的抗震性能影响分析

摘要

The finite element analysis models of the frame structure,which has precast concrete stairs or cast-insitu concrete stairs,are established.The seismic performances of two type stairs are compared,and their influences on the frame structure are studied through response spectrum.The situation of plastic hinge is achieved on the basis of Pushover nonlinear analysis,and the working performance of the frame structure with the precast stairs in elasticplastic state under rare earthquake is studied.%建立预制混凝土楼梯和现浇混凝土楼梯的框架结构有限元分析模型,在反应谱分析中研究了预制楼梯相比于现浇楼梯对框架结构抗震性能的影响及楼梯自身的抗震性能.运用Pushover进行非线性分析得到了出铰情况,研究了预制楼梯框架模型在大震下处于弹塑性状态时的工作性能.