Research On The Progressive Collapse Resistance Capacity Of Earthquake Resistant Design-Based RC Frame Structure

The collapse of Ronan Point, which happened44years ago, caused attention of engineers at home and abroad on progressive collapse. After that, the collapse of Alfred P.Murrah (1995) and Word Trade Center (2001) make engineers of all countries pay more attention on progressive collapse. After more than40years of work, researchers have gain some beneficial results on failure mechanism, analysis method and collapse simulation of progressive collapse. This paper summarizes the domestic and foreign correlation analysis method, analyzes the capacity of progressive collapse resistance of regular,seismic design-based frame structure on following several aspects:1. Based on code-GS A2003, analyze the capacity of progressive collapse resistance of regular,earthquake resistant-based frame structure when column of different locations at first layer quits work;2. Define the index of progressive collapse resistance capacity, which based on influence factors of progressive collapse resistance;3. Through the analysis of pushdown analysis and nonlinear dynamic analysis,This paper analyzes the influence of base constraint form, the numbers of floors and span on the capacity of progressive collapse resistance of regular frame structure;4. Compare the result of static nonlinear analysis and dynamic nonlinear analysis of two-dimensional frame structure. Preliminary probe into the influence of plastic development level on the value of dynamic amplifier.