Earthquake Response Analysis Of High-rise Building Considering Structural Parameter Variation

This article in stochastic finite element theory (Monte-Carlo method) above the foundation, has established the high-rise building structure stochastic finite element computation model using ANSYS, in carries on to it the modality analysis obtains after the model dynamic performance, separately in the design parameter determined when and stochastic when carries on the earthquake to respond the analysis (mainly is earthquake responded spectrum analysis), observation design parameter E andρindependent variation and simultaneously when variation responds the changeability to the earthquake influence, draws some important conclusions: that parametric dissociation of structure arouses structure natural frequency mean value change is to enhance the standard deviation responding to not too, mainly; that parametric dissociation of structure arouses the mean value change that the structure earthquake responds to is to enhance the standard deviation responding to not too, mainly; takes when the same coefficient of variation the elasticity coefficient E changeability responds time the changeability to the structure earthquake influence specific densityρvariation big; Elasticity coefficient E and when densityρat the same time variation responds the changeability to the earthquake influence compared to the elasticity coefficient E independent variation when slightly big, is not various parameters independent variation simple superimposition.