Analysis And Improvement Of The Aseismic Reliability Of The Reinforced Concrete Structure

This paper conducts research on the aseismic reliability of the reinforcedconcrete members and system on the basis of the Reliability Theory and Matlab andANSYS numerical analysis. Through the comparison and analysis of the methods ofcalculating the aseismic reliability, it adopts the most appropriate analysis method toresearch the aseismic reliability and conducts the optimized analysis on the basis ofthe reliability. The main research content includes:1. It summarizes the fundamental contents of the Reliability Theory as well ascompare and analyze the different common calculation methods (First-orderSecond-moment method, JC method, Response Surface method and Monte Carlomethod). The optimal Monte Carlo method is adopted to research the aseismicreliability of the reinforced concrete members and system.2. On the basis of the optimal Monte Carlo method and in accordance with theCode of Aseismic Designing (GB50011-2010), it designs a reinforced concretecolumn, establishes the limit state equation according to the N-M correlation curveof the column and writes the analysis programs by means of Matlab software, thuscalculating the reliability index of the eccentric loading columns under differenteccentricity, analyzing the results obtained and investigating the influence ofeccentricity on the aseismic reliability of the reinforced concrete eccentriccompression column. Meanwhile, Matlab and Monte Carlo methods are combined toestablish the limit state equation under two restricted conditions of ultimate bearingcapacity and displacement as well as analyze and calculate the aseismic reliability ofthe same eccentric compression column under earthquake actions. Through thecomparison and analysis of the two results, the safer analysis method based ondisplacement is finally determined.3. This paper researches and analyzes the rationales of PDS and OPT module ofANSYS and writes the aseismic reliability analysis program of the frame structureand the optimizer based on reliability by adopting the ANSYS Parameter Languageand the Latin hypercube sampling method of Monte Carlo.4. This paper also analyzes the aseismic reliability of the same reinforced concrete frame structure under small and great earthquakes. In this process, it alsoadopts the PDS module to analyze the aseismic reliability and conducts sensitivityanalysis by taking into account the degree of influence of the earthquake actions andvarious structural parameters; finally, OPT module is also used for reliability-basedoptimal analysis so as to save materials and reduce the expenses under theprecondition of ensuring the reliability.