铁路提速改造工程路基勘察方法与实施探讨  

Discussion on Subgrade Survey Method and Implementation of Railway Speed-raising Project

作　　者：赵秀绍[1] 刁心宏[1] 莫林利[2] 

机构地区：[1]华东交通大学铁路环境振动与噪声教育部工程研究中心,南昌330013 [2]华东交通大学软件学院,南昌330013

出　　处：《路基工程》2010年第6期172-174,共3页Subgrade Engineering

基　　金：江西省教育厅青年基金项目(GJJ09503);华东交通大学博士科研启动金资助项目(01306022);铁路环境振动与噪声教育部工程研究中心开放研究项目

摘　　要：既有铁路经多年运营后,路基运营状态恶化,路基承载力、压实度、边坡状况需要重新评估。既有铁路勘察存在路线长、时间短、不便携带大型勘察机械、不能干扰行车等方面限制。针对江苏宁启铁路的实际情况,对路基各种勘察方法进行对比研究,解决了石灰土改良路基硬壳层动力触探等技术难点,提出了合理的路基勘察手段与人员组织,为既有铁路改造工程的设计与施工提供了可靠的资料。Subgrade operating status of the existing railway has been deteriorated after several years＇ operation,so subgrade bearing capacity,compactness and slope condition shall be reevaluated.Investigation of the existing railway has been restricted by long line,short time,inconvenience for taking large-scale survey machine and no traveling interference.According to the practical situation of Nanjing-Qidong Railway,comparative study is carried out on various survey methods of subgrade.As a result,technical difficulties such as dynamic sounding of hard shell course of limestone-soil improved subgrade are solved,and reasonable subgrade survey measure and personnel organization are put forward,which provides reliable information for design and construction of the existing railway reconstruction projects.

关 键 词：既有铁路 路基 勘察 提速改造 

分 类 号：U213.1[交通运输工程—道路与铁道工程]