摘要
研究目的:确定能够满足高速铁路运营及养护维修功能的路基面基本宽度,对于减少高速铁路土地占用、节省工程成本具有重要意义。本文通过与国外高速铁路相关标准的比较,旨在提出改变电缆槽设置位置的优化技术方案。研究结论:(1)减小路基面宽度需重视路堤边坡土体压实质量控制,避免质量安全风险;(2)高速铁路单线基本路基面宽度,采用有砟轨道时可由8.8 m优化至7.4 m,采用无砟轨道时可由8.6 m优化至6.1 m;(3)高速铁路双线基本路基面宽度,采用有砟轨道时可由"8.8 m+线间距"优化至"7.6 m+线间距",采用无砟轨道时可由"8.6 m+线间距"优化至"7.2 m+线间距";(4)从技术可行性角度,路基面宽度仍有压缩空间,特别困难条件下,可依据建筑限界确定路基面宽度;(5)本研究成果可用于指导我国高速铁路设计标准的优化。
Research purposes: Determining the basic subgrade width which satisfies demands of operation, repairing and maintenance of high - speed rail is significant for reduction of land acquisition and engineering cost. This article purposed optimized technical plan in terms of the change of cable trough location in comparison with relevant international high -speed rail standards. Research conclusions:( 1 ) To decrease width of subgrade surface, the compactness quality of embankment slope soil shall be controlled, to avoid risks. (2) The subgrade surface width of ballasted single -track high -speed rail can be optimized from 8.8 m to 7.4 m, and when ballastless track is used, it can be optimized from 8.6 m to 6.1 m. (3) The subgrade surface width of ballasted double - track high - speed rail can be optimized from 8.8 m + track spacing to 7.6 m + track spacing, and when ballastless track is used, it can be optimized from 8.6 m + track spacing to 7.2 m + track spacing. (4) From the technical stand of view, the width of subgrade surface still has potential to decrease, and in difficult conditions, the width may be determined by building boundaries. (5) The research results can provide the guidance to optimize the Chinese high -speed rail standard.
作者
崔维孝
CUI Wei - xiao(China Railway Design Corporation, Tianjin 300142, Chin)
出处
《铁道工程学报》
EI
北大核心
2018年第2期29-34,45,共7页
Journal of Railway Engineering Society
基金
科技部对发展中国家科技援助项目(KY201502006)
中国铁路总公司科技研究开发计划重点项目(Z2016-T002)
中国铁设重大项目(721501)
关键词
高速铁路
路基面宽度
路肩
high - speed railway
width of subgrade surface
subgrade shoulder