Abstract

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Title:: Research Status on Influencing Factors and Failure Mechanism for RC Frame Structural Progressive Collapse

Author(s):: HUANG Hua; HUANG Min; GUO Jie-na; GUO Meng-xue; School of Civil Engineering， Chang’an University

Keywords:: frame structure; progressive collapse; influencing factor; failure mechanism; design method

Abstract:: In recent years, progressive collapse often occurred at home and abroad, and accompanied by a large number of casualties and huge economic losses. The research progress of main factors and collapse mechanism that affected the progressive collapse were reviewed. The results show that the contribution of floor on progressive collapse can’t be neglected, and the column failure position and the column spacing have important influence on structural anti-progressive collapse. Compared with without considering the influence of joint, when considering the influence of joint, the progressive collapse resistance of structure will be reduced. The infilled wall and seismic design are beneficial to progressive collapse. In turn, the beam mechanism (the compressive arch mechanism) and the catenary mechanism act on the frame beam, and the compressive membrane mechanism and the tensile membrane mechanism act on the floor. However, the research of the coupling action and measurement index of the mechanism of different components are insufficient. In the next step, the experimental test and the quantitative research about progressive collapse should be strengthened, and the research results should be applied to the collapse design. Meanwhile, it also should be enhanced to study the impact of accidental load on the progressive collapse.