摘要
通过三角级数叠加法模拟桥面不平顺激励,运用大型有限元通用分析软件ANSYS的耦合技术对车-桥耦合振动进行了分析.提出了5个自由度的车辆模型模拟重车,160个梁单元模型模拟简支梁桥,把车辆和桥梁结构视为2个系统,利用Newmark-β法求解车-桥耦合振动方程组,进行了桥梁结构振动的位移、弯矩的响应研究.得到了桥梁跨中最大位移和弯矩都不是发生在桥梁跨中位置;随着桥面不平顺有明显的变化,随着桥面状况的变差,其响应越来越大.
By superposition method for deck pavement irregularity simulation inspired by trigonometric,coupling of finite element analysis software ANSYS is used on vehicle-bridge coupling vibration analyses. 5 degrees of freedom vehicle model is proposed to simulate heavy vehicles and 160-beam model of simple-supported beam bridge,regerding the bridge structure and vehicle as 2 systems. Newmark-Beta method is used for vehicle-bridge coupling vibration equations for bridge structure study on the vibration response of displacements and bending moment. The position of maximum displacements and bending moment is not on the bridge center. With the bridge deck condition becomes worse,its response is growing.
出处
《大连交通大学学报》
CAS
2015年第4期22-26,共5页
Journal of Dalian Jiaotong University
关键词
车-桥耦合振动
车辆模型
三角级数叠加
随机不平整
vehicle bridge coupling vibration
vehicle model
trigonometric series superposition
random irregularity
