ABSTRACT
Collapse simulation and risk assessment of reinforced concrete (RC) structures are of great significance to promote life safety and hazard-resilience of the society. After years of development, great progress has been made in related aspects, such as the nonlinear constitutive model of concrete, the modeling of random ground motions, collapse simulation and stochastic response analysis of complex RC structures. The present work aims at conducting a numerical investigation of the collapse behavior of a prototype high-rise RC frame-shear wall structure. Numerical results indicate that the randomness in ground motions will prominently affect the collapse behavior of structures, and even lead to entirely different collapse modes. To comprehensively assess the structural resistance performance, an appropriate collapse criterion is proposed and the reliability against collapse is obtained based on the probability density evolution method (PDEM).
