高速铁路无砟轨道路基排水设计  

Drainage Design for Ballastless Track Subgrade of High Speed Railway

作　　者：李井元[1] 丁兆锋[1] 

机构地区：[1]中铁二院工程集团有限责任公司,成都610031

出　　处：《高速铁路技术》2013年第4期78-80,共3页High Speed Railway Technology

摘　　要：高速铁路无砟轨道铁路路基工程排水体系的构建与完善,是保证路基工程动力特性和承载特性的长期稳定性的前提之一。文章针对高速铁路排水设计的目的及要求,提出了高速铁路无砟轨道排水设计的一般设计原则。高速铁路路基排水体系分为地表排水和地下排水两类。地表排水的目的是将路基两侧的汇水分层次拦截引排至路基范围以外,防止汇水浸入、冲刷路基边坡或基床,防止雨水淤积下渗,软化路基结构。地下排水的目的是拦截、排出地下水,降低路基范围内的地下水位,防止地下水侵入路基基床,影响基床承载力及稳定性。排水系统应保持完整性、通畅性,并与其它排水系统做好衔接,设计中尤其需注意基础、防渗及末端设计。Construction and consummation of drainage system of ballastless track subgrade engineering of high speed rail- way is one of the premises to ensure the long-term stability of dynamic characteristics and bearing characteristics of sub- grade engineering. This paper puts forward the general design principle for drainage design according to the purpose and requirement for drainage design of ballastless track of high speed railway. Drainage system of high speed railway is divid- ed into surface drainage and subsurface drainage. The objective of surface drainage is drainage and intercept the water catchment on both sides of the subgrade outside of the subgrade to prevent water immersion, scour of subgrade slope or subgrade bed, rainwater deposition infiltration, softening subgrade structure. The objective of subsurface drainage is to drain and intercept groundwater, reduce groundwater level within the scope of subgrade, prevent the ingress of groundw- ater into subgrade bed, affect the bearing capacity and stability of s ty, smoothness, and good join with other drainage system. Special seepage control and terminal. ubgrade bed. Drainage system shall maintain integri- attention shall be paid to the design of foundation

关 键 词：高速铁路 无砟轨道 排水设计 路基 

分 类 号：U216.414[交通运输工程—道路与铁道工程]