基础变形对轨道结构的影响

Influence of foundation deformation on track structure

轨道交通已经成为我国主要的交通运输方式,它的出现缩短了各区域间的时空距离,解决了人们长途出行的不便,提高了出行效率。但我国铁路轨道建设工程涉及的地理区域多,路基里程长,路基沉降发生几率也相对较高,直接影响到了列车行驶过程的平顺度,严重情况下会直接造成列车的脱轨,造成人员伤亡和财产损失;此外,一旦路基发生沉降,影响面积增大,会给施工维修带来很大的挑战。为了从根本上解决路基沉降问题,需要通过多种途径严格控制施工质量以提升铁路轨道的平顺性,尽可能降低路基沉降现象出现的几率。

Rail transit has become the main mode of transportation in China,which shortens the space-time distance between regions,solves the inconvenience of long-distance travel for Chinese people,and improves the travel efficiency.However,China’s railway track construction project involves many geographical areas,the subgrade mileage is long,and the incidence of subgrade settlement is relatively high,which directly affects the smoothness of the train running process.In serious cases,it will directly cause the derailment of the train,causing casualties and property losses.In addition,once the subgrade settlement occurs,the affected area increases,which brings great challenges to the construction and maintenance.In order to fundamentally solve the problem of subgrade settlement,we need to strictly control the construction quality through a variety of ways to improve the smoothness of railway track and reduce the frequency of subgrade settlement as much as possible.