| 青藏铁路多年冻土区路基排水沟病害防治分析 |
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| 引用本文： | 田亚护,许国琪,董瑞峰.青藏铁路多年冻土区路基排水沟病害防治分析[J].路基工程,2013,0(2):22-25. |
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| 作者姓名： | 田亚护 许国琪 董瑞峰 |
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| 作者单位： | 1.1北京交通大学土木建筑工程学院，北京 100044 |
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| 基金项目： | 青藏铁路公司科技研究开发计划项目（QZ2010-G03） |
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| 摘 要： | 通过现场调查，青藏铁路多年冻土区路基排水沟的破坏主要表现为渠道混凝土板的酥化、破裂及渠内渗水和积水。而造成排水沟病害的主要原因为气候条件及施工质量、土体往复的不均匀冻胀融沉、冻结层上水。青藏铁路多年冻土区路基排水沟的病害防治措施应从控制土体冻胀、融沉和采用可适应土体不均匀变形的渠道结构两方面考虑。
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| 关 键 词： | 多年冻土区 路基排水沟 病害防治分析 |
| 收稿时间： | 2019-11-10 |
Analysis on Disease Prevention for Subgrade Drainage Ditch of Qinghai-Tibet Railway in Permafrost Region |
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| Authors: | TIAN Yahu XU Guoqi DONG Ruifeng |
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| Institution: | 1. School of Civil Engineering and Architecture, Beijing Jiaotong University, Beijing 100044, China; 2. The Administration Permanent Way Department of Qinghai-Tibet Railway Company, Xining 810007, China; 3. The Safety and Quality Supervision Department of Xi＇an Subway Limited Company, Xi＇an 710018, China) |
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| Abstract: | Through site investigation, the main failures of subgrade drainage ditch of Qinghai-Tibet Railway in permafrost region are revealed, including flakes and cracks of conduit concrete board, water seepage and accumulation inside conduit. The diseases thereof are mainly caused by climate, construction quality, repeated uneven frost heaving and thawing subsidence of soil mass, and suprapermafrost water. Thus the prevention measures related should be considered from two aspects, i.e. control of frost heaving and thawing subsidence of soil mass, and use of conduit structure suitable to uneven deformation of soil mass. |
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| Keywords: | permafrost region subgrade drainage ditch disease prevention analysis |
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