铁路无缝线路钢轨温度力测定理论分析  

Theoretical Analysis of Measurement of Rail Temperature Force in Jointless-track

作　　者：梁素平[1] 李向国[1] 

机构地区：[1]石家庄铁道大学土木工程学院,河北石家庄050043

出　　处：《石家庄铁道大学学报（自然科学版）》2011年第2期42-45,共4页Journal of Shijiazhuang Tiedao University(Natural Science Edition)

基　　金：河北省自然科学基金项目(E2011210039)

摘　　要：以横向位移法为基础,通过建立无缝线路具有初始弯曲的轨道力学计算模型推导钢轨内温度力、钢轨跨中施加的横向力、跨中横向位移以及轨道各参数的关系。并通过计算绘图分析轨道各参数对无缝线路中钢轨温度力测定值的影响。通过分析可知,曲线半径、钢轨长度对钢轨温度力测定值影响较大,钢轨弹模、钢轨磨耗对钢轨温度力测定值的影响较小。Based on the lateral displacement method, by establishing mechanics calculation model of joint- less-track with initial curve, the relationship of the temperature force in the rail, the lateral force exerted on the rail and the transverse displacement of rail are derived. Through calculation and drawing, the influence of each track parameter in jointless-track on the measured value of the rail temperature force is analysed. The analysis reveals that the curve radius and rail length has bigger influence on the measured value of the rail temperature force while the influence of the elastic modulus of the rail and the rail attrition is small.

关 键 词：无缝线路 钢轨温度力 初始弯曲 横向位移法 

分 类 号：U211.2[交通运输工程—道路与铁道工程]