The Elasticity Time-history Reliability Analysisty Of RC Spacial Frame Structures

It's well known that earthquake brings large damage to people's lives and property, so it is important to research the reliability of aseismatic structure. Because of multidimensional movement of the reinforced concrete spacial frame structure effected by multidimensional seism, it is necessary to study the multidimensional reaction of RC spacial frame structure. In this paper, on the base of the randomicity of earthquake motion and structural parameters, the time-history of RC spacial frame structures' deformation capacity and bearing capacity under the frequent earthquake is discussed.In order to solve the problem that JC Method can not ensure convergence if the function is highly nonlinear, Improved JC Method which is the same with reliability analysis in complex cases is introduced. Function of RC spacial frame structures' deformation capacity and bearing capacity under the frequent earthquake is set up according to the code of aseimatic structures design and concrete structures design. Considering relativity of spacial earthquake vector quantities, after the division of earthquake process, a method based on Improved JC Method, Elasticity Time-history Method and Matrix Displacement Method is combined to the deducing of the function's partial derivation to randomic parameters, so the reliability can be calculated according to the calculation formula and process. Because reliability can't be determined in practice, the paper uses Monte Carlo Method as the revision.The calculation program CPSRIPVM and revision program RPSRMCM are worked out. Trough an example , some good conclusions are gain. At last, influenceof reliability aroused by the variety of variance and mean of structures' vibration frequency is analyzed according to the example, which can as a reference to reliability analyses in engineering.