The Seismic Vulnerability Of Frame Structure

China is a multi earthquake country, and the seismic vulnerability of buildings are very seriously.Reinforced concrete structures are the main building structure of our modern architecture and the ability to directly influence the seismic safety of the life and wealth of our people.Reinforced concrete frame building structure is a very widely used building structure. The research of Vulnerability framework can provide some theoretical basis .which will provide engineering design and seismic capacity for the development of great significance.The content of the paper mainly comprises several aspects hereinafter:This paper describes the status of domestic and foreign seismic vulnerability study.It includes common methods of earthquake-resistan. We use elastic-plastic time history analysis by comparing the advantages and disadvantages.This paper describes the basic principles and elastic-plastic finite element analysis theory, and introduced the framework of nonlinear model.On the basis of elastic-plastic time history analysis method,using ABAQUS / Standard analysis module of linear perturbation analysis step (Linear perturbation) modal analysis of the model,combined with field measurement results obtained prior to the effective third-order vibration modes of the structure and frequency.Choose Wenchuan earthquake May 12, 2008 in Jiangyou ground motion recorded ground motion as the input,by east-west and north-south peak was 0.1 g, 0.2g, 0.4g of Jiangyoubo after the bidirectional input intercept treatment,which will get the stress cloud model,layers of history curves and overall schedule displacement curve injury cloud, the bottom floor and the apex of acceleration and angular displacement of each layer.Finally, comparing the next three farming seismic stress cloud model, the overall injury cloud, the bottom floor and the apex of the acceleration curve between the drive and the time course of each layer and each layer displacement curve displacement angle, given the seismic vulnerability of the frame structure.