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高速铁路涵洞附近路基动力响应试验研究
引用本文:张国祥,方万进.高速铁路涵洞附近路基动力响应试验研究[J].铁道标准设计通讯,2005(1):49-50.
作者姓名:张国祥  方万进
作者单位:中南大学土木建筑学院 长沙410075 (张国祥),中南大学土木建筑学院 长沙410075(方万进)
基金项目: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、安全性要求

关 键 词:高速铁路  动力响应  路基  填土厚度
文章编号:1004-2954(2005)01-0049-02
修稿时间:2004年7月5日

Test and Study on Subgrade Dynamic Response Near Culvert of High-speed Railway
Zhang Guoxiang,Fang Wanjin Civil Engineering and Architecture School,Central South University,Changsha.Test and Study on Subgrade Dynamic Response Near Culvert of High-speed Railway[J].Railway Standard Design,2005(1):49-50.
Authors:Zhang Guoxiang  Fang Wanjin Civil Engineering and Architecture School  Central South University  Changsha
Affiliation:Zhang Guoxiang,Fang Wanjin Civil Engineering and Architecture School,Central South University,Changsha 410075
Abstract: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.
Keywords:high-speed railway  dynamic response  subgrade  depth of filled soil
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