高速铁路涵洞附近路基动力响应试验研究  

Test and Study on Subgrade Dynamic Response Near Culvert of High-speed Railway

作　　者：张国祥[1] 方万进[1] 

机构地区：[1]中南大学土木建筑学院,长沙410075

出　　处：《铁道标准设计》2005年第1期49-50,共2页Railway Standard Design

基　　金：铁道部科技开发计划项目 (2 0 0 0G48-F)

摘　　要：介绍秦沈客运专线试验段上 ,在两个洞顶填土厚度不同的涵洞附近进行的路基动应力测试。试验研究表明 :高速列车作用下路基对行车速度的动力响应是先增大后减小的 ,速度为 2 0 0km/h时的动力响应最大 ;跨度为 6 0m的涵洞 ,其洞顶填土厚度取 1 5m是合适的 ,可以满足 2 70km /h速度范围内线路的平顺。An introduction is given to dynamic stress test of subgrade near two culverts,which was conducted on testing section of QinShen Passenger Dedicated Railway. Test result shows that the subgrade dynamic response to traveling speed increases at first, then decreases when speed is greater than 200 km/h. A 1 5 m deep filling soil is appropriate for culverts with a span of 6 m, which can meet the demand for track evenness and operation safety at a speed of 270 km/h. or less.

关 键 词：高速铁路 动力响应 路基 填土厚度 

分 类 号：U238[交通运输工程—道路与铁道工程] U213.1