多车辆载荷作用下岩盐公路振动分析  

Vibration Analysis of the Rock Salt Highway Under the Multi-Vehicle Load

作　　者：刘奉喜[1] 刘建坤[2] 钱春香[2] 房建宏 

机构地区：[1]交通运输部公路科学研究院北京交科公路勘察设计研究院有限公司,北京100088 [2]北京交通大学土木建筑工程学院,北京100044 [3]青海省公路科研勘测设计研究院,西宁市810008

出　　处：《北京交通大学学报》2009年第4期149-152,共4页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

基　　金：国家自然科学基金资助项目(50678020)

摘　　要：岩盐公路破坏主要是由车辆载荷的振动引起的,公路运营期间所受到的荷载,不只是单一车辆荷载,常常是一列车队荷载,因此仅仅分析单一车辆对公路的作用显然不够全面.这里依据路面实际高程建立路基三维实体模型,基于Ansys程序的二次开发功能,对多车辆载荷作用下的岩盐公路的振动问题进行了分析.结果表明,振动加速度方面受车辆数目的影响较小,基本可以用单车辆的分析近似研究;应力方面,采用3车辆的分析基本可以近似研究多车辆对岩盐公路的作用.The rock salt highway＇ s destruction is mainly caused by vibration of vehicles load. When put into operation, the highway does not endure one single vehicle load, but often a motorcade load. Therefore, obviously, it isn＇t complete only to analyze the effect of one single vehicle on highway. In the paper, 3-dimentional entity model is built according to road surface actual elevation. And based on re-development function of software-ANSYS, vibrating characteristic of the rock salt highway under the multi-vehicle load is investigated. The conclusion is as follows： （1） the vibration acceleration is less affected by the vehicles number and may be researched approximately through analyzing single vehicle. （2） the stress under multi-vehicle load can be explored approximately by analyzing stress condition under three-vehicle load.

关 键 词：岩盐 公路 振动 数值模拟 

分 类 号：U416.166[交通运输工程—道路与铁道工程]