滨海富水区冻结法施工结构温度演化及变形响应

涂金光; 曾红波; 石州; 肖中林; 谢雄耀

doi:10.20174/j.JUSE.2026.03.30

地下空间与工程学报 >

2026 , Vol. 22 >Issue 3: 1043 - 1055

DOI: https://doi.org/10.20174/j.JUSE.2026.03.30

设计、施工、监测

滨海富水区冻结法施工结构温度演化及变形响应

涂金光 ,
曾红波 ,
石州 ,
肖中林 ,
谢雄耀

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1.中交二公局第一工程有限公司, 湖北武汉 430000;
2.同济大学地下建筑与工程系, 上海 200092;
3.中国交建轨道交通事业部,北京 100088

涂金光(1981—),男,湖北麻城人,高级工程师,主要从事交通及市政工程技术管理。E-mail:1051151302@qq.com

谢雄耀(1972—),男,湖北武汉人,博士,教授,主要从事隧道与地下工程无损检测、风险与防灾的研究。E-mail:xiexiongyao@tongji.edu.cn

收稿日期: 2025-11-17

网络出版日期: 2026-06-23

基金资助

国家重点研发计划项目(2023YFC3806705);国家自然科学基金(52038008,52378408)

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Temperature Evolution and Deformation Response of Frozen Construction Structure in Coastal Water-Rich Area

Tu Jinguang ,
Zeng Hongbo ,
Shi Zhou ,
Xiao Zhonglin ,
Xie Xiongyao

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1. CCCC-Second Highway Engineering Co., Ltd., Wuhan 430000, P. R. China;
2. Department of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, P. R. China;
3. China Communications Construction Company Limited Rail Transit Division, Beijing 100088, P. R. China

Received date: 2025-11-17

Online published: 2026-06-23

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摘要

滨海区域地层软弱富水且承载力弱,冻结法施工全过程中结构及土体变形场和温度场响应剧烈而易导致大范围施工扰动。通过现场及室内试验获取了土体及地下水温度效应参数,建立了冻结-开挖-解冻全过程三维热力耦合数值分析模型,探明了施工全过程中冻结帷幕圈发展及扩散规律,揭示了全深度范围内土体及支护结构变形和温度演化特性,最后通过现场实践对研究结果进行了应用及检验。结果表明:通道开挖过程中距通道中心2.75~7.16 m范围内土体发生压缩挤密和急剧温度波动,在升温解冻15~25 d内可对地表往下15.8 m深度范围内土体进行注浆加固,尤其是距中心3.99 m范围内的土体升温速率较其他部位更快;土体冻结过程中,冻结管内侧土体较外侧冻结速度更快,通道左右两侧土体较上下侧冻结速度更快;升温解冻过程中,通道上部和下部土体较两侧部位解冻更快,且外部土体及通道上部和下部土体的解冻主要发生在冻结管持续升温阶段,使得解冻过程中初期支护及二次衬砌上部及下部变形显著大于两侧部位,且钢架底部两侧边角处,和钢筋网顶部及下部会发生明显的应力集中;预埋注浆管并在解冻开始后的20~40 d向上部及下部土层内注浆可以减缓结构位移发展和应力集中。

关键词： 人工冻结; 滨海区域; 温度演化; 变形控制; 冻结帷幕

本文引用格式

涂金光 , 曾红波 , 石州 , 肖中林 , 谢雄耀 . 滨海富水区冻结法施工结构温度演化及变形响应[J]. 地下空间与工程学报, 2026 , 22(3) : 1043 -1055 . DOI: 10.20174/j.JUSE.2026.03.30

Abstract

The stratum in coastal area is weak and rich in water with low bearing capacity. During the engineering construction by frozen method, the deformation and temperature fields of the structure and soil respond violently, which can easily lead to large-scale construction disturbances. Temperature effect parameters of soil and groundwater are obtained through field and indoor tests, a 3D thermo-mechanical coupled numerical analysis model for the whole process of freezing excavation thawing is established, the development and diffusion laws of the frozen curtain ring during the construction process is explored, the deformation and temperature evolution characteristics of soil and support structures are revealed, and the research results are finally applied and verified through engineering practice. The results show that: During the channel excavation, the soil within a range of 2.75~7.16 m from the channel center is compressed and compacted, and there are sharp temperature fluctuations. Within 15~25 days of heating and thawing, grouting reinforcement can be carried out on the soil within a depth range of 15.8 m below the ground surface. Especially within a range of 3.99 m from the channel center, the soil temperature rise faster than other regions. During the soil freezing process, the soil on the inner side of the freezing tube freezes faster than the outer side, and the soil on both sides of the channel freezes faster than the upper and lower sides. During the heating and thawing process, the upper and lower soil in the channel thaw faster than the two sides, and the thawing of the upper and lower soil in the channel mainly occurs during the continuous heating stage. During the thawing process, the deformation of the upper and lower parts of the primary support and secondary lining is significantly greater than that of the two sides, and there will be significant stress concentration at the corners of the steel rib bottom and the top and lower parts of the reinforcement mesh. Pre-embedded grouting pipes can be used to inject grout into the upper and lower soil 20 to 40 days after thawing begins, in order to slow down the development of structural displacement and stress concentration.

Key words： artificial freezing; coastal region; temperature evolution; deformation control; freezing curtain

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