[1]夏才初,白雪莹,韩常领.冻融作用下多年冻土隧道结构及围岩变形规律[J].哈尔滨工程大学学报,2020,41(7):1016-1021.[doi:10.11990/jheu.201901077]
 XIA Caichu,BAI Xueying,HAN Changling.Deformation rules of surrounding rock and the structure of permafrost tunnels under freeze-thaw cycles[J].hebgcdxxb,2020,41(7):1016-1021.[doi:10.11990/jheu.201901077]
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《哈尔滨工程大学学报》[ISSN:1006-6977/CN:61-1281/TN]

卷:
41
期数:
2020年7期
页码:
1016-1021
栏目:
出版日期:
2020-07-05

文章信息/Info

Title:
Deformation rules of surrounding rock and the structure of permafrost tunnels under freeze-thaw cycles
作者:
夏才初12 白雪莹1 韩常领3
1. 同济大学 土木工程学院, 上海 200092;
2. 绍兴文理学院 土木工程学院, 浙江 绍兴 312000;
3. 中交第一公路勘察设计研究院有限公司, 陕西 西安 710075
Author(s):
XIA Caichu12 BAI Xueying1 HAN Changling3
1. College of Civil Engineering, Tongji University, Shanghai 200092, China;
2. College of Civil Engineering, Shaoxing University, Shaoxing 312000, China;
3. CCCC First Highway Construction Co., Ltd., Xi’an 710075, China
关键词:
隧道多年冻土冻融循环围岩变形含水量数值模拟
分类号:
U459.2
DOI:
10.11990/jheu.201901077
文献标志码:
A
摘要:
为研究多年冻土隧道结构、围岩的冻融变形规律以及含水量对隧底围岩冻融循环次数和变形的影响,本文采用有限元方法进行数值模拟,采用热-力场耦合计算隧道、围岩的传热变形过程。计算结果表明:在运营期内,隧底冻土围岩及路面的融沉位移逐年减小,总体呈现向上回升趋势;冻结期隧底围岩的回冻变形减轻了融沉变形导致的隧道不均匀变形程度,因此应重点控制施工期内隧底围岩的融化沉降,加强隧底保温措施以减少围岩在运营期所经历的冻融循环次数;冻土围岩含水量越高,运营期内隧底冻土回冻速度越快,隧底围岩含水量超过27%时,融沉所导致的路面横向不均匀融沉变形将对路面的排水带来不利影响。

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备注/Memo

备注/Memo:
收稿日期:2019-01-27。
基金项目:国家自然科学基金面上项目(51778475,41472248);国家科技支撑计划(2014BAG05B05).
作者简介:夏才初,男,教授,博士生导师.
通讯作者:夏才初,E-mail:tjxiaccb@126.com
更新日期/Last Update: 2020-08-15