岩土力学Issue(z2)：285-290,6.
高速铁路高架线路列车运营对既有线路基的影响研究
Research on effect of train running on elevated line of high-speed railway on existing railway subgrade
摘要
Abstract
The effect of train running on elevated bridge of high-seed railway on existing railway subgrade is analysis by means of the establishment of a pier-soil-subgrade model which is proved to be reliable by comparison with in-field test results. First, the stress state of the existing railway at different traffic conditions is simulated while the influence of rail irregularities and soil modulus is discussed; then, the cumulative settlement deformation under traffic loads of trains is predicted. The research results show that running trains on elevated high-speed railway bridge have little effect on the stress state and accumulated deformation of existing railway subgrade. As a result, the distance between piers and the line spacing in existing railway just need to adjust by the clearance diagram requirements. In case of bad rail irregularities and soil modulus decline, the stress increase induced by high-speed trains won’t exceed 0.5 kPa.关键词
高速铁路/既有线/路基/偏应力/动力响应Key words
high-speed railway/existing railway/subgrade/deviator stress/dynamic response分类
交通工程引用本文复制引用
时瑾,邹凯,谷爱军,江辉,梁青槐..高速铁路高架线路列车运营对既有线路基的影响研究[J].岩土力学,2013,(z2):285-290,6.基金项目
国家自然科学基金资助（No.51008018）；铁道部科技开发计划资助（No.2010G006-E）。 （）
