上方基坑施工既有隧道变形演化特征分析

土工基础 ›› 2024, Vol. 38 ›› Issue (1): 67-70.

上方基坑施工既有隧道变形演化特征分析

张磊1，章舒展1，渠成堃2,3，李瑛4，李长俊2,3，陆钰铨2,3

(1.杭州市城市建设投资集团有限公司，杭州 310030；2.水下隧道智能设计、建造及养护技术与装备交通运输行业研发中心，杭州 310030；3.浙江数智交院科技股份有限公司，杭州 310030；4.浙江省建筑设计研究院，杭州 310030)

收稿日期:2023-10-09 修回日期:2023-11-01 出版日期:2024-02-29 发布日期:2024-03-07
作者简介:张磊(1981-)，男，高级工程师，研究方向为市政道路桥梁隧道等工程管理。
基金资助:
浙江省交通厅科技示范工程（2021070），浙江省交通厅课题（2020005）

Deformation Evolution Characteristics Analysis of The Existing Tunnel During the Deep Excavation Above

ZHANG Lei1, ZHANG Shuzhan1, QU Chengkun2,3, LI Ying4, LI Changjun2,3， LU Yuquan2,3

(1.Hangzhou City Construction Investment Group Co. Ltd, Hangzhou 310030；
2.Transportation Industry Research Center for Intelligent Design, Construction, Maintenance Technology & Equipment of Underwater Tunnels, Hangzhou 310030；
3.Zhejiang Institute of Communications Co. Ltd, Hangzhou 310030；
4.Zhejiang Province Institute of Architectural Design and Research, Hangzhou 310030)

Received:2023-10-09 Revised:2023-11-01 Online:2024-02-29 Published:2024-03-07

摘要/Abstract

摘要： 随着城市地下空间利用率越来越高，既有隧道上方基坑的变形特征对于施工安全和支护设计具有重要的指导意义。依托杭州天目山路改造项目，基于基坑与下方既有隧道的监测数据，分析了基坑施工过程中本基坑及旁侧基坑的地表沉降等特征规律，并监测获得了下方既有隧道在基坑施工过程中道床沉降变形的一般规律。结果表明，合理的围护结构可以有效控制基坑周边沉降变形，在上方基坑加固阶段，下方既有隧道受影响最大，产生了较大的沉降变形，而加固后的施工阶段变形反而较小。研究结果对于施工设计与风险控制具有参考意义。

关键词: 既有隧道, 基坑变形, 周边沉降, 变形特征分析

Abstract: With the increasing utilization of the underground space in urban areas, studying the deformation characteristics of the deep excavation above the existing tunnels is of significant importance for the construction safety and the support design. Based on the Tianmu Mountain Road transformation project, the surface settlement of both the excavated area and adjacent excavations were analyzed during the excavation process, and the general rules of settlement deformation of the underlying existing tunnel were monitored and obtained. The results showed that a reasonable supporting structure can effectively control the settlement deformation around the foundation pit, and during the reinforcement stage above the foundation pit, the existing tunnel below was significantly affected, resulting in significant settlement deformation. However, the deformation during the construction stage after reinforced was relatively small. The finding of this study has reference value for construction design and risk control.

Key words: Existing Tunnel, Excavation Deformation, Surrounding Settlement, Deformation Characteristic Analysis

中图分类号:

U456

张磊, 章舒展, 渠成堃, 李瑛, 李长俊, 陆钰铨, . 上方基坑施工既有隧道变形演化特征分析[J]. 土工基础, 2024, 38(1): 67-70.

ZHANG Lei, ZHANG Shuzhan, QU Chengkun, LI Ying, LI Changjun, LU Yuquan, . Deformation Evolution Characteristics Analysis of The Existing Tunnel During the Deep Excavation Above[J]. Soil Engineering and Foundation, 2024, 38(1): 67-70.

[1]	宋清明, 游波, 赵敬妍. 伺服混凝土支撑在软土临地铁深基坑中的应用[J]. 土工基础, 2025, 39(3): 375-381.
[2]	李金池, 石和杰. 铁路与建筑中间基坑开挖土体变形特征研究[J]. 土工基础, 2024, 38(5): 832-835.
[3]	章宁 , 孟宝华, 邓宇. 西昌某软土地层基坑变形分析及加固处理[J]. 土工基础, 2024, 38(3): 409-414.
[4]	陆思莲, 袁金兴, 张烨, 陆敬辉, 王月香. 某基坑围护结构变形监测与数值模拟分析[J]. 土工基础, 2024, 38(1): 129-134.
[5]	刘厚成, 郭启军. 悬挂式地连墙地铁深基坑地下水渗流场及其变形规律研究[J]. 土工基础, 2021, 35(2): 91-95.
[6]	王占生, 张佳莉, 杜江涛. 地铁车站基坑变形规律分析——以苏州地区为例[J]. 土工基础, 2021, 35(1): 1-5.
[7]	王博, 谢志英, 肖伟, 曹芳, 肖桃李. 偏压荷载作用下双排桩支护结构的受力变形特性研究[J]. 土工基础, 2021, 35(1): 50-54.
[8]	胡德省，刘彬. 基于数值模拟分析的基坑变形特征研究[J]. , 2019, 33(3): 339-342.
[9]	周毅，李红梅. 深基坑桩锚支护特性数值模拟研究[J]. , 2017, 31(4): 453-458.
[10]	席鹏，曹得占. 大型基坑开挖对地铁车站基坑影响的数值仿真分析[J]. , 2017, 31(2): 183-187.
[11]	李上钦，罗武章，陈雄图，唐封强. 基于BP模型与ARX模型的基坑变形预测研究[J]. , 2015, 29(4): 61-64.
[12]	蔡廉锦，陈志波，李方振，王腾 . 基坑开挖过程中渗流作用的影响[J]. , 2013, 27(5): 37-40.
[13]	吴洋1，2，王宝军1，庞有师3，柯结伟4. 苏州交通银行大厦基坑支护设计与监测分析[J]. , 2012, 26(6): 18-21.