|本期目录/Table of Contents|

[1]苏 栋,张小妹,张国涛,等.基坑开挖导致邻近既有隧道变形的主动控制研究[J].建筑科学与工程学报,2024,41(04):130-138.[doi:10.19815/j.jace.2022.08053]
　SU Dong,ZHANG Xiaomei,ZHANG Guotao,et al.Research on active control of deformation of existing tunnel caused by foundation pit excavation[J].Journal of Architecture and Civil Engineering,2024,41(04):130-138.[doi:10.19815/j.jace.2022.08053]
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基坑开挖导致邻近既有隧道变形的主动控制研究(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
41卷
期数:
2024年04期
页码:
130-138
栏目:
桥隧工程
出版日期:
2024-07-19

文章信息/Info

Title:
Research on active control of deformation of existing tunnel caused by foundation pit excavation
文章编号:
1673-2049(2024)04-0130-09
作者:
苏 栋1,2,张小妹3,张国涛1,2,雷国平4,陈湘生1,2
(1. 深圳大学 滨海城市韧性基础设施教育部重点实验室,广东 深圳 518060; 2. 深圳大学 土木与交通工程学院,广东 深圳 518060; 3. 深圳市前海建设投资控股集团有限公司,广东 深圳 518066; 4. 佛山大学 土木与交通学院,广东 佛山 528225)
Author(s):
SU Dong1,2, ZHANG Xiaomei3, ZHANG Guotao1,2, LEI Guoping4, CHEN Xiangsheng1,2
(1. Key Laboratory of Coastal Urban Resilient Infrastructure of Ministry of Education, Shenzhen University, Shenzhen 518060, Guangdong, China; 2. College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, Guangdong, China; 3. Shenzhen Qianhai Construction Investment Holding Group Co., Ltd., Shenzhen 518066, Guangdong, China; 4. College of Civil Engineering and Transportation, Foshan University, Foshan 528225, Guangdong, China)
关键词:
基坑;  隧道位移;  支撑轴力;  主动控制系统
Keywords:
foundation pit;  tunnel displacement;  supporting axial force;  active control system
分类号:
TU472
DOI:
10.19815/j.jace.2022.08053
文献标志码:
A
摘要:
采用有限元分析方法对新型支撑轴力主动控制系统进行了研究,提出了一种支撑轴力设计方法; 在对支撑不施加主动轴力的情况下,研究了花岗岩残积土地层中基坑开挖对既有隧道的影响,根据基坑侧边不同位置隧道在基坑开挖作用下的位移划分了基坑开挖影响区; 基于提出的轴力设计方法,研究了基坑开挖过程中支撑轴力主动控制对既有隧道位移的影响规律; 获得了隧道位移控制到预警值10 mm以下的临界控制比,分析了其在不同隧道位置时的分布规律。结果表明:该地层中的影响区范围相对已有研究的影响区更小; 隧道位移与地连墙位移的控制比近似呈正比关系; 基坑腰部0.6倍挖深位置附近隧道的水平位移需进行最严格的控制,靠近基坑且深度较深的区域通过水平位移控制得到的临界控制比更小,应以隧道水平位移控制为主,而远离基坑且深度较浅的区域应以隧道竖向位移控制为主; 花岗岩残积土中的基坑开挖影响区以及对临界控制比的量化研究成果可为类似工程提供参考。
Abstract:
Finite element analysis method was used to study a new type of active control system for the axial forces of the supports, and a design method was proposed. The influence of excavation of a foundation pit in granite residual soil layers on existing tunnels was studied without applying active axial force to the supports. The excavation impact zone of the foundation pit was divided based on the displacement of tunnels at different positions on the side of the foundation pit under the action of excavation. Based on the proposed axial force design method, a study was conducted on the influence of active control of axial forces of the supports on the displacement of existing tunnels during excavation of the foundation pit. The critical control ratio of tunnel displacement control below the warning value of 10 mm was obtained, and its distribution pattern at different tunnel positions was analyzed. The results show that the scope of the impact zone in this stratum is relatively small compared to the existing research results. The tunnel displacement is approximately proportional to the control ratio of the diaphragm wall displacement. The horizontal displacement of the tunnel near the excavation depth of 0.6 times depth of the foundation pit needs to be strictly controlled. The critical control ratio obtained through horizontal displacement control is smaller in areas close to the foundation pit and deeper, and tunnel horizontal displacement control should be the main approach. The area far from the foundation pit and shallow in depth should be mainly controlled by vertical displacement of the tunnel. The quantitative research results on the excavation impact zone of foundation pits in residual granite soil and the critical control ratio can provide reference for similar projects.

参考文献/References:

[1] 贾 坚,谢小林,罗发扬,等.控制深基坑变形的支撑轴力伺服系统[J].上海交通大学学报,2009,43(10):1589-1594.
JIA Jian,XIE Xiaolin,LUO Fayang,et al.Support axial force servo system for controlling deformation of deep foundation pit[J].Journal of Shanghai Jiao Tong University,2009,43(10):1589-1594.
[2]孙九春,白廷辉,廖少明.软土地铁深基坑围护结构侧向变形的主动控制技术[J].建筑施工,2020,42(12):2255-2260.
SUN Jiuchun,BAI Tinghui,LIAO Shaoming.Active control technology for lateral deformation of subway deep foundation pit support structure in soft soil[J].Building Construction,2020,42(12):2255-2260.
[3]刘 毅,张 勇,贺祖浩,等.伺服钢支撑在邻近建筑物车站深基坑中的应用[J].施工技术,2018,47(23):72-75.
LIU Yi,ZHANG Yong,HE Zuhao,et al.Application research of servo steel bracing in deep foundation excavation near buildings and stations[J].Construction Technology,2018,47(23):72-75.
[4]孙九春,白廷辉.地铁基坑钢支撑轴力伺服系统设置方式研究[J].地下空间与工程学报,2019,15(增1):195-204.
SUN Jiuchun,BAI Tinghui.Study on the setting method of steel supporting axial force servo system for subway foundation pit[J].Chinese Journal of Underground Space and Engineering,2019,15(S1):195-204.
[5]曹 虹,孙九春.软土基坑钢支撑伺服系统轴力的确定方法研究[J].建筑施工,2019,41(5):754-758.
CAO Hong,SUN Jiuchun.Study on determination method of axial force of steel support servo system in soft soil foundation pit[J].Building Construction,2019,41(5):754-758.
[6]何君佐,廖少明,孙九春,等.软土深基坑钢支撑多点同步加载的轴力相干性研究[J].土木工程学报,2020,53(7):99-107.
HE Junzuo,LIAO Shaoming,SUN Jiuchun,et al.Study on axial force interference of soft soil deep excavation under multi-point synchronous loading[J].China Civil Engineering Journal,2020,53(7):99-107.
[7]龚俊杰.自动伺服钢支撑的轴力加载方式研究[J].建筑施工,2016,38(10):1463-1464.
GONG Junjie.Study on loading method of axial force for automatic servo steel support[J].Building Construction,2016,38(10):1463-1464.
[8]王卫东,吴江斌,翁其平.基坑开挖卸载对地铁区间隧道影响的数值模拟[J].岩土力学,2004,25(增2):251-255.
WANG Weidong,WU Jiangbin,WENG Qiping.Numerical modeling of affection of foundation pit excavation on metro tunnel[J].Rock and Soil Mechanics,2004,25(S2):251-255.
[9]郑 刚,王 琦,邓 旭,等.不同围护结构变形模式对坑外既有隧道变形影响的对比分析[J].岩土工程学报,2015,37(7):1181-1194.
ZHENG Gang,WANG Qi,DENG Xu,et al.Comparative analysis of influences of different deformation modes of retaining structures on deformation of existing tunnels outside excavations[J].Chinese Journal of Geotechnical Engineering,2015,37(7):1181-1194.
[10]郑 刚,杜一鸣,刁 钰,等.基坑开挖引起邻近既有隧道变形的影响区研究[J].岩土工程学报,2016,38(4):599-612.
ZHENG Gang,DU Yiming,DIAO Yu,et al.Influenced zones for deformation of existing tunnels adjacent to excavations[J].Chinese Journal of Geotechnical Engineering,2016,38(4):599-612.
[11]陈仁朋,叶跃鸿,王诚杰,等.大型地下通道开挖对下卧地铁隧道上浮影响[J].浙江大学学报(工学版),2017,51(7):1269-1277.
CHEN Renpeng,YE Yuehong,WANG Chengjie,et al.Influence of open-cut tunneling on uplift behavior of underlying metro tunnel[J].Journal of Zhejiang University(Engineering Science),2017,51(7):1269-1277.
[12]HUANG X,SCHWEIGER H F,HUANG H W.Influence of deep excavations on nearby existing tunnels[J].International Journal of Geomechanics,2013,13(2):170-180.
[13]朱 旻,陈湘生,张国涛,等.花岗岩残积土硬化土模型参数反演及工程应用[J].岩土力学,2022,43(4):1061-1072.
ZHU Min,CHEN Xiangsheng,ZHANG Guotao,et al.Parameter back-analysis of hardening soil model for granite residual soil and its engineering applications[J].Rock and Soil Mechanics,2022,43(4):1061-1072.
[14]张国涛.深圳地区花岗岩残积土地层基坑及近接隧道变形支撑轴力主动控制研究[D].深圳:深圳大学,2022.
ZHANG Guotao.Study on active control of deformation supporting axial force of foundation pit and adjacent tunnel in granite residual soil layer in Shenzhen area[D].Shenzhen:Shenzhen University,2022.

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　LI Lian-xiang,LIU Bing,LI Xian-jun.Permanent Supporting Structure Combined with Supporting Piles and Underground Structure[J].Journal of Architecture and Civil Engineering,2017,34(04):119.
[2]杨敏,刘斌.土钉抗拔承载力经验验算方法[J].建筑科学与工程学报,2010,27(02):18.
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　LI Lian-xiang,CHENG Xiao-yang,HUANG Jia-jia,et al.Study on Spatial Effect of Foundation Pit in Typical Strata of Jinan[J].Journal of Architecture and Civil Engineering,2018,35(04):94.
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备注/Memo

备注/Memo:
收稿日期:2023-08-15
基金项目:深圳市自然科学基金项目(JCYJ20210324094607020); 国家自然科学基金项目(51938008); 广东省重点领域研发计划项目(2019B111105001)
作者简介:苏 栋(1978-),男,工学博士,教授,博士生导师,E-mail:sudong@szu.edu.cn。
通信作者:雷国平(1989-),男,工学博士,讲师,E-mail:guoping.lei@fosu.edu.cn。
更新日期/Last Update: 2024-07-20