列车单向行车冲击下曲线的变化趋势与应对方法

The Variation Trend of Curve and Coping Approach Under Lashing of Train Running on One Way

通过对工务段在区间双线运营的线路养护维修中的调查,发现在列车先进入的一端,曲线位置(正矢)发生变化的幅度较大,而列车离开的一端曲线方向的变化却较小.进一步的研究表明,这种现象是列车由直线进入曲线产生直线惯性冲击力的结果,并给出了采用地锚桩法消除这种直线惯性冲击力的方法.该方法对于稳定曲线的位置具有积极的指导意义.

According to investigating the way maintenance in the range of two-lane runing, it is found that the curve position （winding value） change rate is higher when a train running into the curve firstly, but the curve position （winding value）change rate is normal on the end of curve. Further studies have shown that this phenomenon is a straight-line inertial impact result when a train runs into the curve from straight line. A way is given to eliminate linear inertial impact by using picket of anchorage. The method to stabilize the position of the curve has a positive significance.