轨道不平顺条件下板式轨道动力分析  

Dynamic Analysis of Slab-track under the Condition of Track Irregularity

作　　者：李立林[1] 

机构地区：[1]广州铁路集团石长铁路有限责任公司,长沙410007

出　　处：《世界科技研究与发展》2009年第5期904-909,共6页World Sci-Tech R&D

摘　　要：国内外对于有碴轨道的动力学研究已比较成熟,已经步入轮轨相互作用的系统动力学研究阶段。无碴轨道结构作为近几年发展起来的新型轨道结构,对于它的设计和研究仍限于静力学分析和一些简化的动力学分析,对于无碴轨道和高速车辆的系统动力学研究还比较少,本文运用通用有限元计算软件ANSYS,建立土质路基板式轨道系统非线性力学模型并施加列车移动载荷,分析在不同波深轨道竖向谐波不平顺工况下,板式轨道各部分,轨道板、CA砂浆、混凝土基座及基床的竖向沉降、竖向振动加速度及横向、纵向与竖向的三向应力状况及时程曲线。Dynamic analysis of ballasted track is very sophisticated both domestically and internationally, it has entered the stage of systematical mechanics study on the interaction of wheels and track. Ballasfless track is a newly developed track structure. The study on it is limited to statics and some simplified dynamic analysis. There are few dynamic analysis of ballastless track and high speed train body. In this paper,focusing on constructing slab-track on soil roadbed, a non-linear mechanical model of soil roadbed-slab-track system is established by using a finite element analysis software, ANSYS. Then mobile train load is applied to analyze the vertical settlement, vertical vibration acceleration and the 3-directional stress and time-displacement curve of slab-track parts ： slab board, CA mortar, concrete base and roadbed, under the condition of different wave-depths harmonic irregularity.

关 键 词：不平顺 板式轨道 土质路基 动力分析 

分 类 号：U213.242[交通运输工程—道路与铁道工程]