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。

计量
- 文章访问数: 116
- HTML全文浏览量: 17
- PDF下载量: 4
- 被引次数: 1
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

HTML全文

参考文献(12)

[1]	杨平,陈瑾,张尚贵,等.软弱地层联络通道冻结法施工温度及位移场全程实测研究[J].岩土工程学报,2017,39(12):2226-2234.
[2]	曹红林.地铁隧道冻结法施工融沉控制方案及实施[J].地下空间与工程学报,2010,6(2):387-395.
[3]	任辉,胡向东,洪泽群,等.超浅埋暗挖隧道管幕冻结法积极冻结方案试验研究[J].岩土工程学报,2019,41(2):320-328.
[4]	郑立夫,高永涛,周喻,等.浅埋隧道冻结法施工地表冻胀融沉规律及冻结壁厚度优化研究[J].岩土力学,2020,41(6):2110-2121.
[5]	阴悦.大高差联络通道冻结法施工对隧道及地表影响研究[D].北京:中国矿业大学,2018.
[6]	姬文轩.富水卵砾石地层地铁联络通道人工冻结法施工模型试验研究[D].西安:西安科技大学,2017.
[7]	胡向东,方涛,郭晓东,等.拱北隧道管幕冻结法现场原型试验解冻温度场实测研究[J].煤炭学报,2017,42(7):1700-1705.
[8]	胡向东,肖朝昀,毛良根.双层越江隧道联络通道冻结法温度场影响因素[J].地下空间与工程学报,2009,5(1):7-12.
[9]	CATTONI E, MIRIANO C, BOCO L, et al. Time-dependent ground movements induced by shield tunneling in soft clay:a parametric study[J]. Acta Geotechnica, 2016, 11(6):1385-1399.
[10]	HONG R B, CAI H B,LI M K,et al. Factor's influence analysis of frost heave during the twin-tunnel construction using artificial horizontal ground freezing method[J/OL]. Advances in Civil Engineering, 2020[2022-07-05]. https://doi.org/10.1155/2020/6650182.
[11]	王博,郑鹏飞,胡江洋,等.近距离平行盾构隧道施工数值模拟及影响因素分析[J].现代隧道技术,2021,58(4):117-124.
[12]	李忠超,白天麒,梁荣柱,等.富水粉细砂层水平冻结效果试验及数值模拟[J].工业建筑,2022,52(3):1-9.