Deformation and Damage Characteristics of a Newly Operated Tunnel Caused by above Foundation Pit Construction

Authors

LIU Jiqiang, China Railway Southern Investment Group Co ., Ltd., Shenzhen , Guangdong 518060 , ChinaFollow
ZHU Min, College of Civil and Transportation Engineering , Shenzhen University , Shenzhen , Guangdong 518060 , China ;Key Laboratory of Coastal Urban Resilient Infrastructure , Ministry of Education , Shenzhen University , Shenzhen , Guangdong 518060 , ChinaFollow
HAO Kun, Electrical Engineering Co ., Ltd. of CTCE Group , Bengbu , Anhui 233000 , China
CHEN Dengwei, China Railway Southern Investment Group Co ., Ltd., Shenzhen , Guangdong 518060 , China
CHEN Xiangsheng, College of Civil and Transportation Engineering , Shenzhen University , Shenzhen , Guangdong 518060 , China ;Key Laboratory of Coastal Urban Resilient Infrastructure , Ministry of Education , Shenzhen University , Shenzhen , Guangdong 518060 , China

Corresponding Author

朱旻，男，博士，副研究员.E-mail：zhuminfnf@163.com

Abstract

The construction of foundation pits in granite residual soil layers is prone to causing upheaval deformation and structural damage in shield tunnels below.Based on the engineering case of a newly operated metro tunnel collinear with the above long-distance deep foundation pit in Shenzhen,a three-dimensional finite element model was established to investigate the variation law of the heave and horizontal convergence of the shield tunnel caused by the deep foundation pit excavation.The correlation between the longitudinal stress of the lining structure and the damage was analyzed.The results indicate that the tunnel deformation caused by foundation pit unloading is primarily vertical heave,accompanied by slight section deformation.After adopting the jump excavation method and the stripped soil reinforcement above the tunnel crown,the average tunnel heave is reduced by 14.4%,and the lateral displacement of the envelop enclosure is reduced by 49.1%.The shield tunnel damage caused by the above unloading is mainly the spalling at the circumferential joints of the tunnel crown.The reason is that the compressive shear cracks occur and expand on the intrados of the circumferential joints of the tunnel crown under the combined action of bending moment and shear.

Publication Date

6-27-2024

DOI

10.14048/j.issn.1671-2579.2024.03.023

First Page

202

Last Page

210

Submission Date

February 2025

Recommended Citation

Jiqiang, LIU; Min, ZHU; Kun, HAO; Dengwei, CHEN; and Xiangsheng, CHEN (2024) "Deformation and Damage Characteristics of a Newly Operated Tunnel Caused by above Foundation Pit Construction," Journal of China & Foreign Highway: Vol. 44: Iss. 3, Article 23.
DOI: 10.14048/j.issn.1671-2579.2024.03.023
Available at: https://zwgl1980.csust.edu.cn/journal/vol44/iss3/23

Reference

[1]朱旻 ,陈湘生 ,王雪涛 .盾构隧道衬砌结构性能演化分析与思考 [J].工程力学 ,2022 ,39(3):33-50.ZHU Min ,CHEN Xiangsheng ,WANG Xuetao .Analysis and thinking on structural performance evolution of shield tunnel lining [J].Engineering Mechanics ,2022 ,39(3):33-50.
[2]郭军 ,闻家明 ,顾问天 ,等.上跨盾构隧道的地下空间开发技术 [J].铁道建筑 ,2020 ,60(7):64-68.GUO Jun ,WEN Jiaming ,GU Wentian ,et al .Development technology of underground space over shield tunnel [J].Railway Engineering ,2020 ,60(7):64-68.
[3]刘宽 ，徐志豪 ，汤渊 ，等.基坑爆破开挖爆点位置与基坑高 度 对 爆 破 振 动 影 响 研 究 [J].中 外 公 路 ，2024 ,44（2）:214-219.LIU Kuan ,XU Zhihao ，TANG Yuan ,et al .Influence of blasting point position and foundation pit height on blasting vibration during foundation pit blasting excavation [J].Journal of China & Foreign Highway ,2024 ，44(2):214-219.
[4]赵朋 .基坑开挖对零距离下卧盾构隧道的影响 [J].中外公路 ，2023 ,43（6）:253-260.ZHAO Peng .Influence of foundation pit excavation on zero distance underground shield tunnel [J].Journal of China & Foreign Highway ,2023 ，43(6):253-260.
[5]卜康正 ,郑先昌 ,张万照 ,等.基坑开挖引起复合地基下卧双 线 地 铁 隧 道 附 加 荷 载 的 计 算 研 究 [J].铁 道 标 准 设 计 ,2019 ,63(8):126-133.BU Kangzheng ,ZHENG Xianchang ,ZHANG Wanzhao ,et al.Calculation study of additional load of double-tube metro tunnels under composite foundation due to foundation pit excavation [J].Railway Standard Design ,2019 ,63(8):126-133.
[6]姚宏波 ,李冰河 ,童磊 ,等.考虑空间效应的软土隧道上方卸荷变形分析 [J].岩土力学 ,2020 ,41(7):2453 -2460 .YAO Hongbo ,LI Binghe ,TONG Lei ,et al .Analysis of metro tunnel deformation by upper excavation unloading considering spatial effect in soft soil [J].Rock and Soil Mechanics ,2020 ,41(7):2453 -2460 .
[7]张鑫海 ,魏纲 ,林心蓓 .考虑纵向变形影响的基坑下方盾构 隧 道 横 向 受 力 变 化 研 究 [J].岩 石 力 学 与 工 程 学 报 ,2020 ,39(11):2351 -2364 .ZHANG Xinhai ,WEI Gang ,LIN Xinbei .Research on transverse force and deformation of shield tunnels below foundation pits considering influence of longitudinal deformation [J].Chinese Journal of Rock Mechanics and Engineering ,2020 ,39(11):2351 -2364 .
[8]岳云鹏 ,郑先昌 ,刘晓玉 ,等.流固耦合作用下基坑开挖及降水对下卧既有地铁隧道的影响研究 [J].铁道标准设计 ,2020 ,64(4):151-156,167.YUE Yunpeng ,ZHENG Xianchang ,LIU Xiaoyu ,et al .Effect of foundation pit excavation and dewatering on existing subway tunnels subject to fluid-solid coupling of soils [J].Railway Standard Design ,2020 ,64(4):151-156,167.
[9]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.
[10]彭 智 勇 ,杨 秀 仁 .基 坑 分 块 开 挖 参 数 对 邻 近 地 铁 盾 构 隧道的变形影响分析 [J].中外公路 ,2019 ,39(2):206-210.PENG Zhiyong ,YANG Xiuren .The deformation influence about block excavation parameters of foundation pit adjacent to metro shield tunnels [J].Journal of China & Foreign Highway ,2019 ,39(2):206-210.
[11]刘天正 .砂卵石地层基坑开挖对下卧运营盾构隧道结构变形研究 [J].铁道标准设计 ,2019 ,63(9):84-90.LIU Tianzheng .Study on the structural deformation of underlying operating shield tunnel caused by foundation pit excavation in sand-gravel stratum [J].Railway Standard Design ,2019 ,63(9):84-90.
[12]张浩 ,范建军 ,黄醒春 .开挖方式对下卧隧道变形影响的模型试验研究 [J].中外公路 ,2020 ,40(4):202-209.ZHANG Hao ,FAN Jianjun ,HUANG Xingchun .Model test study on effect of excavation method on deformation of a lower lying tunnel [J].Journal of China & Foreign Highway ,2020 ,40(4):202-209.
[13]ZHAI Q ,RAHARDJO H ,SATYANAGA A .Variability in unsaturated hydraulic properties of residual soil in Singapore [J].Engineering Geology ,2016 ,209:21-29.
[14]陈拴 ,吴怀娜 ,陈仁朋 ,等.上方长距离基坑开挖引起的共线 隧 道 变 形 研 究 [J].上 海 交 通 大 学 学 报 ,2021 ,55(6):698-706.CHEN Shuan ,WU Huaina ,CHEN Renpeng ,et al .Deformation of a collinear tunnel induced by overlying long-distance excavation [J].Journal of Shanghai JiaoTong University ,2021 ,55(6):698-706.
[15]ZHU M ,GONG X N ,GAO X ,et al .Remediation of damaged shield tunnel using grouting technique :Serviceability improvements and prevention of potential risks [J].Journal of Performance of Constructed Facilities ,2019 ,33(6):04019062 .
[16]MENG F Y ,CHEN R P ,WU H N ,et al .Observed behaviors of a long and deep excavation and collinear underlying tunnels in Shenzhen granite residual soil [J].Tunnelling and Underground Space Technology ,2020 ,103:103504 .
[17]MENG F Y ,CHEN R P ,XIE S W ,et al .Excavation-induced arching effect below base level and responses of long-collinear underlying existing tunnel [J].Tunnelling and Underground Space Technology Incorporating Trenchless Technology Research ,2022 ,123:104417 .
[18]安然 ,孔令伟 ,张先伟 .残积土孔内剪切试验的强度特性及 广 义 邓 肯 ‒张 模 型 研 究 [J].岩 土 工 程 学 报 ,2020 ,42(9):1723 -1732 .AN Ran ,KONG Lingwei ,ZHANG Xianwei .Mechanical properties and generalized Duncan-Chang model for granite residual soils using borehole shear tests [J].Chinese Journal of Geotechnical Engineering ,2020 ,42(9):1723 -1732 .
[19]周 小 文 ,罗 兴 财 .全 风 化 花 岗 岩 与 花 岗 岩 残 积 土 的 判 别及 物 理 力 学 性 质 对 比 [J].长 江 科 学 院 院 报 ,2022 ,39(4):1-7.ZHOU Xiaowen ,LUO Xingcai .Identification and physical mechanical property comparison between completely decomposed granite and granite residual soil [J].Journal of Yangtze River Scientific Research Institute ,2022 ,39(4):1-7.
[20]SCHNAID F ,AR ORTIGAO J ,MÁNTARAS F M ,et al .Analysis of self-boring pressuremeter (SBPM ) and marchetti dilatometer (DMT ) tests in granite saprolites [J].Canadian Geotechnical Journal ,2000 ,37(4):796-810.
[21]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 .
[22]施成华 ,李翔 ,雷明锋 ,等.基坑上跨既有盾构隧道坑底土体 加 固 方 式 探 究 [J].铁 道 科 学 与 工 程 学 报 ,2020 ,17(5):1147 -1155 .SHI Chenghua ,LI Xiang ,LEI Mingfeng ,et al .Study on reinforcement method for foundation pit of existing shield tunnel under foundation pit [J].Journal of Railway Science and Engineering ,2020 ,17(5):1147 -1155 .
[23]LIU J W ,SHI C H ,LEI M F ,et al .A study on damage mechanism modelling of shield tunnel under unloading based on damage-plasticity model of concrete [J].Engineering Failure Analysis ,2021 ,123(3):105261 .
[24]LIU J W ,SHI C H ,WANG Z X ,et al .Damage mechanism modelling of shield tunnel with longitudinal differential deformation based on elastoplastic damage model [J].Tunnelling and Underground Space Technology ,2021 ,113:103952 .
[25]刘建文 ,施成华 ,雷明锋 ,等.基于混凝土损伤模型的卸载作 用 下 盾 构 隧 道 损 伤 机 理 [J].中 南 大 学 学 报 (自 然 科 学版),2021 ,52(3):758-769.LIU Jianwen ,SHI Chenghua ,LEI Mingfeng ,et al .Damage mechanism of shield tunnel under unloading based on elastoplastic damage model of concrete [J].Journal of Central South University (Science and Technology ),2021 ,52(3):758-769.
[26]LIU X ,DONG Z B ,SONG W ,et al .Investigation of the structural effect induced by stagger joints in segmental tunnel linings :Direct insight from mechanical behaviors of longitudinal and circumferential joints [J].Tunnelling and Underground Space Technology ,2018 ,71:271-291.
[27]DING W Q ,GONG Y F ,QIAO Y F ,et al .Experimental investigation on mechanical behavior of segmental joint under combined loading of compression-bending-shear [J].Tunnelling and Underground Space Technology ,2020 ,98:103346 .