轨道交通荷载下路基土的动力学行为研究进展  

Advances in Researches on Mechanical Behavior of Subgrade Soils under Repeated-load of High-speed Track Vehicles

作　　者：刘雪珠[1] 陈国兴[1] 

机构地区：[1]南京工业大学岩土工程研究所,南京210009

出　　处：《防灾减灾工程学报》2008年第2期248-255,共8页Journal of Disaster Prevention and Mitigation Engineering

基　　金：江苏省六大人才高峰计划项目(06-F-008);江苏省博士创新基金(2007)资助

摘　　要：随着高速铁路、城际列车、地铁和轻轨等快速轨道交通的迅速发展,以及既有铁路列车提速,列车高速运行引起的地基振动、永久变形以及一系列相关的土动力学和岩土工程问题已经成为亟待解决的关键问题。通过对国内外关于轨道交通荷载作用下地基土的动力响应的理论研究、现场测试、土的动力特性以及地基土的永久变形研究进行评述,分析和总结了目前轨道交通荷载作用下路基土研究中存在的问题,并提出了尚需进一步研究的建议。The rapid development of high-speed railway, intercity train, subway, light rail transit and speed-increase of existing railways have become a tendency throughout the world. However, a series of problems on soil dynamics and geotechnical engineering induced by high-speed trains running, such as subgrade vibration, accumulative plastic deformation of soft soil foundation and so on, need to be solved immediately. This paper details with some advances in researches on dynamic response of subgrade soil, site measurement, dynamic characters of soil and accumulative plastic deformation of soft soil under repeated loading of track vehicles. Through analysis and summary of the shortages of those researches above mentioned, some suggestions for further research are pointed out in this paper.

关 键 词：轨道交通 路基土 动力行为 永久变形 

分 类 号：TU413.62[建筑科学—岩土工程]