摘要
梁柱式钢护栏作为一种半刚性护栏,具有一定的刚性和柔性,能依靠护栏的弯曲变形和张拉力来抵抗车辆的碰撞。为研究桥梁钢护栏的防撞性能,本文采用ABAQUS有限元分析软件对桥梁梁柱式钢护栏进行静力碰撞分析,研究了碰撞速度一定时,不同碰撞角度对碰撞性能的影响,结果表明在初始碰撞速度80 km/h不变的情况下,随着碰撞角度的增大,护栏的最大应力和最大位移都将增大,从而使护栏提前进入塑性阶段而屈服。
Beam - Post Steel Guardrail as a semi - rigid guardrail, with a certain rigidity and flexibility, is able to resist collision by deformation and tension of guardrail. To study the capability of guardrail used for bridges, ABAQUS the finite element analysis software has been adopted to analyze the static load collision on the bridge beam - post steel guardrail. This paper investigated the impact on the guardrail capability by different collision angles with the collision speed as a constant. Outcomes demonstrate that when the initial collision speed （80km/h） is fixed, the maximum guardrail strain and displacement will increase with the increase of the collision angle, so as to make the guardrail to fail earlier by reaching the plasticity stage earlier.
出处
《浙江交通职业技术学院学报》
CAS
2011年第4期14-18,共5页
Journal of Zhejiang Institute of Communications
关键词
桥梁
钢护栏
碰撞
有限元
ABAQUS
碰撞角度
bridge
steel guardrail
collision
fmite element analysis
ABAQUS
collision angle
