ABSTRACT

Safety assessment of vehicles crossing highway interchanges during earthquakes by reliability-based numerical simulations is presented in this paper. The assessment was performed for two limit states: vehicle rollover and sideslipping accidents. Simulations were conducted using three-dimensional finite element models of two existing highway interchanges consisting of straight and curved bridges under site-specific earthquakes. Effects of curved bridges radii, levels of earthquake, vehicle type, driving velocity, and road surface conditions on the safety limit states of five types of vehicles, namely, sedan-type, SUV, small-box truck, bus, and large truck, were investigated and clarified in the Monte Carlo simulation.

摘要

本文介绍了通过基于可靠性的数值模拟对地震期间车辆穿越高速公路立交桥的安全性进行评估。评估针对两种极限状态进行：车辆侧翻和侧滑事故。在特定地点的地震下，使用由直桥和弯桥组成的两个现有高速公路立交桥的三维有限元模型进行了模拟。弯桥半径、地震等级、车型、行驶速度、路面状况对轿车、SUV、小型货车、客车、大型货车五种车辆安全极限状态的影响，在蒙特卡洛模拟中进行了调查和澄清。