[1]罗新宇,姜连馥.多年冻土区铁路拼装式涵洞基础稳定性研究[J].深圳大学学报理工版,2009,26(3):310-314.
 LUO Xin-yu and JIANG Lian-fu.Base stability analysis of railway assembled culvert in permafrost region[J].Journal of Shenzhen University Science and Engineering,2009,26(3):310-314.
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多年冻土区铁路拼装式涵洞基础稳定性研究()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第26卷
期数:
2009年3期
页码:
310-314
栏目:
土木建筑工程
出版日期:
2009-07-31

文章信息/Info

Title:
Base stability analysis of railway assembled culvert in permafrost region
文章编号:
1000-2618(2009)03-0310-05
作者:
罗新宇1姜连馥2
1)兰州交通大学土木工程学院,兰州 730070;
2)深圳大学土木工程学院,深圳 518060
Author(s):
LUO Xin-yu1 and JIANG Lian-fu2
1)College of Civil Engineering,Lanzhou Jiaotong University,Lanzhou 730070,P. R. China
2)College of Civil Engineering,Shenzhen University,Shenzhen 518060,P. R. China
关键词:
青藏铁路多年冻土拼装式涵洞地温差异基础冻融沉降变形
Keywords:
Qinghai-Tibet railwaypermafrostassembled culvertground temperaturebase frost heave and thaw settlement
分类号:
U 445.55
文献标志码:
A
摘要:
根据青藏铁路清水河试验段两座拼装式涵洞工程近3年的监测结果,研究多年冻土区铁路涵洞下地基温度变化与涵洞基础沉降变形之间的关系.研究表明,多年冻土区涵洞工程在路基修筑的整个期间内,其基础会发生较大变形,且冻胀抬升变形量总值小于融化下沉变形量总值;涵洞建成初期,中部基础下沉速率较大,但2个冻-融循环后,涵洞中部的总下沉量较出入口过渡段的总下沉量小;涵洞出入口多渡段基础下地温差异与阳光照射有关,但这种地温差异对基础沉降变形的影响并不显著;路基和涵洞施工完成后对涵洞下地基冻土层具有明显的保护作用.
Abstract:
With the monitoring data of two assembled culverts on the Qingshuihe River in a permafrost region along Qinghai-Tibet Railway,the relationship between the ground temperature and the settlement was studied. The results show that the deformation of the culverts are large during the construction,and the total frost heave is less than the total settlement.The rate of settlement in the middle part of culvert is larger than the ones at the inlet and outlet transition zones at the beginning,but the total settlement in the middle part is smaller than the ones at the transition zones after two frost-thaw cycles. There is a difference of ground temperatures at the inlet and outlet transition zones because of the radiation.However,the radiation has less effects on the settlements. In addition,the completed railway base and culverts have protective function on the permafrost.

参考文献/References:

[1]武憼民,汪双杰,章金钊.多年冻土地区公路工程[M].北京:人民交通出版社,2005:225.
[2]李忠,汪琦,司剑锋.青藏铁路清水河地区路基下伏多年冻土地温变化特征研究[J].铁道工程学报,2005,(6):10-13.
[3]王晓黎,陈频志.青藏铁路涵洞试验工程研究[J].冰川冻土,2003,25(增刊1):84-87.
[4]陈永奇,吴子安,吴中如.变形监测分析与预报[M].北京:测绘出版社,2003:7-8.
[5]程国栋.青藏铁路工程的一种路基冷却方法探讨[J].寒区科学与技术,2005,42:169-176(英文版).
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[1]WU Jing-min,WANG Shuang-jie,ZHANG Jin-zhao. The Highway Engineering on Permafrost Regions[M]. Beijing:China Communications Press, 2005: 225(in Chinese).
[2]LI Zhong,WANG Qi,SI Jian-feng. Study on the ground temperature characteristic of the plateau permafrost underlying the Qinghai-Tibet railway embankment[J].Journal of Railway Engineering Society,2005,(6):10-13(in Chinese).
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备注/Memo

备注/Memo:
收稿日期:2008-11-23;修回日期:2009-06-24
基金项目:铁道部科技开发计划资助项目(2001G001-B-09)
作者简介:罗新宇(1955-),男(汉族),湖北省武汉市人,兰州交通大学教授. E-mail:luoxinyu@mail.lzjtu.cn
更新日期/Last Update: 2009-08-26