盾构隧道进出口水平冻结工程地表沉降对比分析

鹿庆蕊; 金修伟; 李栋伟; 陈士军; 王帅儒

doi:10.13204/j.gyjzG22070507

盾构隧道进出口水平冻结工程地表沉降对比分析

doi: 10.13204/j.gyjzG22070507

东华理工大学, 南昌 330013

基金项目:

国家重点实验室开放基金项目(NR1930)；国家自然科学基金项目(52168044)；江西省自然科学基金项目(20202BABL204055)；江西省研究生创新基金项目(YC2021-S650,YC2021-S651,YC2021-S652)。

详细信息

作者简介:
鹿庆蕊,女,1984年出生,博士,副教授,qingrui_lu@ecut.edu.cn。

通讯作者:
金修伟,男,1999年出生,硕士,2868650302@qq.com。

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- 文章访问数: 96
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- 被引次数: 0
出版历程
- 收稿日期: 2022-07-05

Comparative Analysis on Ground Subsidence Above Entrances of Shield Tunnels by Horizontal Freezing

Donghua University of Technology, Nanchang 330013, China

摘要

摘要: 以上海市轨道交通某盾构区间为研究对象,考虑是否进行冻结施工以及不同的水平冻结天数等影响因素,建立隧道开挖的热力耦合模型,并将模拟结果与现场监测数据进行对比分析,结果表明:数值计算结果整体趋势与实测数据较为吻合;门洞口存在水平冻结条件时,地表沉降量较未进行水平冻结减小了82.3%;不同水平冻结天数对地表沉降量影响不大。
- 盾构隧道 /
- 洞门 /
- 水平冻结 /
- 地表沉降
Abstract: Taking a shield tunnel section in Shanghai Rail Transit as the research object, considering different influencing factors including frozen and unfrozen construction and different frozen days, the thermal-mechanical coupling model of tunneling for shield tunnels was constructed and the simulation results were compared with the in-situ monitoring data. The results indicated that the overall trend of the calculated subsidence was consistent with the measured data; the ground subsidence at the entrance of tunnels was reduced by 82.3% in the horizontal frozen condition compared with not being horizontally frozen condition; simultaneously, the different horizontal-frozen days had little effect on the ground subsidence.
- shield tunnel /
- entrance of tunnel /
- horizontal freezing /
- ground subsidence

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参考文献(12)

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