用LS-DYNA仿真车-桥墩碰撞时角度对桥梁的影响  

Influence of Angle on Bridge in Vehicle-Pier Collision Based on LS-DYNA Simulation

作　　者：程海根[1] 邹江娜 

机构地区：[1]华东交通大学土木建筑学院,江西南昌330013

出　　处：《华东交通大学学报》2013年第6期19-24,共6页Journal of East China Jiaotong University

基　　金：国家自然科学基金项目(51068005)

摘　　要：车撞护栏规范公式表明碰撞角度与撞击力成二次函数关系,运用LS-DYNA对车-桥墩碰撞进行仿真模拟,探讨该规范公式用于车-桥墩碰撞的可行性。结果表明碰撞角度与撞击力成三次函数关系,同时也证实角度与桥梁的位移成一次线性关系,角度越大,横向位移越小,纵向位移越大。The standard formula in crash barrier shows that collision angle and impact force are in a quadratic function relation. This paper discusses the feasibility of the standard formula in the vehicle-pier collision based on LS-DYNA vehicle-pier collision simulation. The results indicate that impact force has cubic function rela-tionship with the collision angle and the displacement of the bridge has primary linear relationship with the colli-sion angle：the greater the angle is,the smaller the horizontal displacement is,and the bigger the longitudinal displacement is.

关 键 词：车-桥墩碰撞 规范公式 碰撞角度 最大撞击力 位移 

分 类 号：U447[建筑科学—桥梁与隧道工程]