Reliability Assessment Method Of RC Frame Structures In Seismic Collapse Resistance

Earthquake is one of the major natural disasters that human beings are facing. Among them, building collapse is the main reason cause of casualties and property loss. Currently we did not quantify the seismic design of maximum considered earthquake, therefore, the study of aseismic performance, and try to improve the building’s earthquake resistance capability is extremely important.This paper considering the earthquake uncertainty and the randomness of structure, start from the perspective of the total probability, proposed an anti-collapse performance evaluation method for RC frame structures. In the paper, a structure example is subjected to an incremental dynamic analysis by using MSC. Marc, based on MATLAB introduces parallel computing to improve efficiency, using lognormal fitting fragility curves of structure, obtained the indicators of structural performance.Through the work, this paper gets the following main achievements:(1) Based on IDA and the parallel computing technology, using the Monte Carlo stochastic finite element method and commonly used finite element software, this paper proposed a new full probabilistic evaluation method of the building capability in earthquake, and written the MATLAB procedure.(2) Through calculate and analyze on a plane frame and a general model, obtained the indicators of structures’aseismic performance, verify the accuracy and efficiency of the proposed method, the results can be evaluated on the performance of structure.(3) Use the proposed method for the structural reliability sensitivity analysis, we can identify the key control factor of structural design and construction, propose suggesting, helping improve the seismic collapse resistance of building structures.