Research On Resistance To Progressive Collapse Design And Seismic Design

As the number of the building’s progressive collapse occurred more and more frequently, it’s sudden and devastation a serious threat to humans. it caused huge economic losses and social impacts to the human society. Therefore, the research of buildings to resist progressive collapse was of major significance.This paper summarizes the seismic design and resist to progressive collapse design from the domestic and foreign requirements. Based on the existing research of the seismic design and the resist to progressive collapse design, the theoretical analysis and numerical model study of the building under action of the longitudinal horizontal seismic action, the lateral horizontal seismic action amd theaccidental loads were completed individually, which provided a reference for the popularization and application of the design methods for buildings to resist progressive collapse.This apper includes the following aspects:(1)Analysis of the seismic response of the RC building structure. Analyzing the unidirectional horizontal seismic action by using seismic responsespectrum; analyzing the building structure carrying capacity under the individual action of longitudinal and lateral horizontal earthquake.(2)The research of the dynamic amplification coefficient and the scope of influence under the accidental loads. In order to simulate the dynamic response caused by the accidental loads more realistic by the linear static analysis, the paper referenced the research results at home and abrad to determine the dynamic parameters of the dynamic response process (dynamic amplification factor and dynamic response range). The building’s bearing capacity analysis under three load conditions were done on the premise that the dynamic respone was considered.(3)A comparative study between the anti-progressive collapse design and the seimic design in the framework structure. Based on the seismic theoretical analysis and results of numerical analysis of the anti-progressive collapse design, seismic capacity bearing capacity and resistance to progressive collapse analysis were compared to determine. If the structure of the seismic design can meet resistance to progressive collapse design of the structure. In addition, some personal recommendations on the design of RC building progressive collapse were also proposed in this paper.