提速状态下路基动应力测试分析

Analysis of subgrade dynamic stress under increasing speed

简要介绍了动态测试系统 ,对沪宁线车速 1 7～ 1 36 km/ h情况下客货车产生的路基动应力进行了测试分析 ,结果表明 ,随着列车速度的提高 ,路基动应力略有增加 。

In this paper, the dynamic experimental system is introduced at first. The subgrade dynamic stress under trains at speed of 17～136 km/h in Hunian line is analysed. The results show that the dynamic stress will increase with the speed. The analyses provide the basis on the estimation technology and the standard for subgrade during increasing speed on the existing railways.