Structural Reliability Analysis Of San Xiang Square Subway Station

This paper takes Suzhou Sanxiang square subway station as the example, obtains results by analyzing the reliability of the structure and system, modeling, loading, operations, combined with the internal,forces distribution of proper selection of beam and column section. Combined with the advantages and disadvantages of the present reliability calculation methods, firstly, using the checking point method of the structure of the variable cross section of the checking point and reliability, and then using the Monte Carlo method will center sampling selection checkes point near again to solve the section reliability and comparison between analysis found that checking point method can also be used in the station reliability analysis.This paper establishes Simplifies the calculation model of subway station structure obtaines failure probability by using law limits of system under different system; combining Monte Carlo method with MATLAB programming calculation acquires structure in multiple failure mode correlation under different system reliability; foundes system of two kinds of methods to calculate the maximum failure probability smaller gap.The durability of subway station structure is studied, the effect of stray current, concrete carbonation and natural corrosion on the durability of reinforced concrete is considered. Improve the loss rate of the reinforced bar section, and establish the function function of the control section,the failure probability curve of the whole station structure is obtained.The failure probability of the whole station structure is analyzed by analyzing the time variant reliability index of the control section and the whole station structure system, get the subway station under normal use, at the time of 76 years, the dangerous cross section is needed to detect and reinforce.