•  
  •  
 

Abstract

With the intensifying development density of urban underground space in China，the impact of ultra-large foundation pit construction on the normal operation of adjacent structures cannot be ignored.Relying on the Huangmugang Comprehensive Transportation Hub Project in Shenzhen，this paper studied the deformation of the envelope structure and soil caused by the excavation of the ultra-large special-shaped foundation pit，as well as the structural response of the deformation of the adjacent existing station and the temporary steel bridge.The paper optimized the construction scheme of the special-shaped foundation pit excavation.The results show that the deformation trend of the envelope structure on the north and south sides of the foundation pit is the same as a whole，but the deformation at the external corner on the north side is large.The envelope structure of the existing station as a whole is displaced into the pit，with a maximum horizontal displacement of 9.4 mm，and the horizontal displacement of the steel box girder bridge pile after excavation of the foundation pit is large，with the maximum value reaching 10.5 mm.The overall construction safety is ensured by adding temporary concrete supports on the lower ground and adding steel sleeves on the piers of the temporary steel bridge in the pit.

Publication Date

12-17-2024

DOI

10.14048/j.issn.1671-2579.2024.06.002

First Page

11

Last Page

19

Submission Date

February 2025

Reference

[1]谷淡平 ,凌同华 ,殷枝荣 ,等.便桥荷载作用下深基坑地下连续墙变形特性分析 [J].地下空间与工程学报 ,2020 ,16(6):1781 -1791 .GU Danping ,LING Tonghua ,YIN Zhirong ,et al .Analysis of deformation characteristics of diaphragm wall in deep foundation pit under load of temporary bridge [J].Chinese Journal of Underground Space and Engineering ,2020 ,16(6):1781 -1791 .
[2]李小雪 ,雷可 ,谭忠盛 ,等.城市地下空间施工风险因素耦合效应研究 [J].土木工程学报 ,2021 ,54(1):76-86.LI Xiaoxue ,LEI Ke ,TAN Zhongsheng ,et al .Study on coupling effect of risk factors in urban underground space construction [J].China Civil Engineering Journal ,2021 ,54(1):76-86.
[3]张振波 ,宋太森 ,郑筱彦 ,等.基坑风险评估的全客观过程层析分析计算方法 [J].地下空间与工程学报 ,2021 ,17(2):991-997,1043 .ZHANG Zhenbo ,SONG Taisen ,ZHENG Xiaoyan ,et al .Total objective process chromatographic analysis and calculation method for risk assessment of foundation pit[J].Chinese Journal of Underground Space and Engineering ,2021 ,17(2):991-997,1043 .
[4]CHEN R P ,MENG F ,LI Z C ,et al.Investigation of response of metro tunnels due to adjacent large excavation and protective measures in soft soils [J].Tunnelling and Underground Space Technology ,2016 ,58:224-235.
[5]钟翰虎 ,李聪 ,李雨林 ,等.偏压荷载下深基坑支护结构非对称变形与控制技术研究 [J].中外公路 ,2022 ,42(1):34-37.ZHONG Hanhu ,LI Cong ,LI Yulin ,et al .Research on asymmetric deformation and control technology of supporting structure of deep foundation pit under eccentric load [J].Journal of China & Foreign Highway ,2022 ,42(1):34-37.
[6]赵良云 ,卜铭 ,徐茂虎 ,等.温度作用下深基坑钢支撑自伺服系统轴力研究 [J].中外公路 ,2021 ,41(4):36-40.ZHAO Liangyun ,BU Ming ,XU Maohu ,et al .Study on axial force of steel supporting self-servo system in deep foundation pit under temperature load [J].Journal of China & Foreign Highway ,2021 ,41(4):36-40.
[7]李浩 ,贺祖浩 ,杨钊 ,等.软弱地层临近深基坑工程房屋沉降注浆控制研究 [J].中外公路 ,2021 ,41(1):26-30LI Hao ,HE Zuhao ,YANG Zhao ,et al .Study on grouting control for settlement of neighboring buildings with deep foundation in soft ground layer [J].Journal of China & Foreign Highway ,2021 ,41(1):26-30.
[8]胡风明 ,宋健 ,闫磊 ,等.危岩带下深基坑开挖关键技术及仿真分析 [J].中外公路 ,2020 ,40(4):11-15.HU Fengming ,SONG Jian ,YAN Lei ,et al .Key technology and simulation analysis of deep foundation excavationin dangerous rock band [J].Journal of China & Foreign Highway ,2020 ,40(4):11-15.
[9]王志杰 ,周飞聪 ,周平 ,等.基于强近接大型基坑单侧开挖卸载既有车站变形 理论研究 [J].岩石力学与工程学报 ,2020 ,39(10):2131 -2147 .WANG Zhijie ,ZHOU Feicong ,ZHOU Ping ,et al .Research on deformation theory of existing stations based on single side excavation and unloading of large foundation pits with strong close connection [J].Chinese Journal of Rock Mechanics and Engineering ,2020 ,39(10):2131 -2147 .
[10]齐朋 ,张宇奇 ,王宁 .深基坑围护结构横向位移监测和数值模拟分析 [J].中外公路 ,2022 ,42(1):38-42.QI Peng ,ZHANG Yuqi ,WANG Ning .Lateral displacement monitoring and numerical simulation analysis for retaining system of deep foundation pit [J].Journal of China & Foreign Highway ,2022 ,42(1):38-42.
[11]马凯伦 ,董明礼 ,曹义 ,等.两侧双基坑开挖对密贴地铁车站的影响研究 [J].地下空间与工程学报 ,2022 ,18(增刊 2):1043 -1048 .MA Kailun ,DONG Mingli ,CAO Yi ,et al .Influence of excavation of double foundation pits on both sides of the metro station [J].Chinese Journal of Underground Space and Engineering ,2022 ,18(sup 2):1043 -1048
[12]信磊磊 ,杜一鸣 ,郑刚 .两侧深基坑开挖对近邻地铁车站及隧道变形影响的优化分析 [J].铁道标准设计 ,2016 ,60(5):84-90.XIN Leilei ,DU Yiming ,ZHENG Gang .Optimal analysis of influences on deformation of adjacent metro station and tunnel due to deep pit bilateral excavations [J].Railway Standard Design ,2016 ,60(5):84-90.
[13]胡瑞青 ,戴志仁 ,李储军 ,等.砂卵石地层基坑开挖对侧方地铁交叉隧道和车站的影响分析 [J].铁道标准设计 ,2018 ,62(12):118-124.HU Ruiqing ,DAI Zhiren ,LI Chujun ,et al .Analysis of influence of foundation pit in sandy cobble stratum on side metro crossing tunnel and station [J].Railway Standard Design ,2018 ,62(12):118-124.
[14]旷庆华 .同深基坑开挖引起紧邻地铁车站变形特性研究[J].铁道标准设计 ,2015 ,59(5):130-132,137.KUANG Qinghua .Study on characteristics of subway station deformation induced by excavation of adjacent deep foundation pit [J].Railway Standard Design ,2015 ,59(5):130-132,137.
[15]高盟 ,高广运 ,冯世进 ,等.基坑开挖引起紧贴运营地铁车站的变形控制研究 [J].岩土工程学报 ,2008 ,30(6):818-823.GAO Meng ,GAO Guangyun ,FENG Shijin ,et al.Control of deformation of operating subway station induced by adjacent deep excavation [J].Chinese Journal of Geotechnical Engineering ,2008 ,30(6):818-823.
[16]冉启仁 ,王旭 ,王博林 ,等.基坑开挖对邻近建筑桩基弯矩和变形影响的模型试验 [J].岩土工程学报 ,2021 ,43(增刊 1):132-137.RAN Qiren ,WANG Xu ,WANG Bolin ,et al .Model tests on influences of excavation of foundation pits on bending moment and deformation of pile foundation of adjacent buildings [J].Chinese Journal of Geotechnical Engineering ,2021 ,43(sup 1):132-137.
[17]刘念武 ,陈奕天 ,龚晓南 ,等.软土深开挖致地铁车站基坑及邻近建筑变形特性研究 [J].岩土力学 ,2019 ,40(4):1515 -1525 ,1576 .LIU Nianwu ,CHEN Yitian ,GONG Xiaonan ,et al.Analysis of deformation characteristics of foundation pit of metro station and adjacent buildings induced by deep excavation in soft soil[J].Rock and Soil Mechanics ,2019 ,40(4):1515 -1525 ,1576 .
[18]LIU G B ,HUANG P ,SHI J W ,et al .Performance of a deep excavation and its effect on adjacent tunnels in Shanghai soft clay [J].Journal of Performance of Constructed Facilities ,2016 ,30(6):04016041 .
[19]LIANG R Z ,WU J ,SUN L W ,et al .Performances of adjacent metro structures due to zoned excavation of a large-scale basement in soft ground [J].Tunnelling and Underground Space Technology ,2021 ,117:104123 .
[20]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 .
[21]刘继强 ,朱旻 ,郝琨 ,等.上方基坑施工引起新运营隧道变形与病害分析 [J].中外公路 ,2024 ,44(3):202-210.LIU Jiqiang ,ZHU Min ,HAO Kun ,et al .Deformation and damage characteristics of a newly operated tunnel caused by above foundation pit construction [J].Journal of China & Foreign Highway ,2024 ,44(3):202-210.
[22]北京城建勘测设计研究院有限责任公司 .城市轨道交通工程监测技术规范 :GB 50911—2013 [S].北京 :中国建筑工业出版社 ,2014 .Beijing Urban Construction Exploration & Surveying Design Research Institute Co .,Ltd..Code for monitoring measurement of urban rail transit engineering :GB 50911—2013 [S].Beijing :China Architecture & Building Press ,2014 .
[23]北京城建勘测设计研究院有限责任公司 .城市轨道交通工程测量规范 :GB/T 50308—2017 [S].北京 :中国建筑工业出版社 ,2017 .Beijing Urban Construction Exploration & Surveying Design Research Institute Co .,Ltd..Code for urban rail transit engineering survey :GB/T 50308—2017 [S].Beijing :China Architecture & Building Press ,2017 .

Download

Share

COinS