The influence of secondary lining construction time on longitudinal mechanical properties of shield tunnel
WANG Hongchao1, HU Jun2, ZHOU Yongqiang2,3, FU Xiaodong2,3
1. China Railway Eryuan Engineering Group Co., Ltd., Chengdu 610031, Sichuan, China; 2. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Wuhan 430071, Hubei, China; 3. University of Chinese Academy of Sciences, Beijing 100049, China
Abstract: To solve the problem of local damage and water seepage and leakage of lining structure caused by the longitudinal uneven deformation in shield tunnel, the influence law of construction time of the secondary lining and the reasonable construction time were researched in this paper. A three-dimension longitudinal refined numerical model of shield tunnel with double-layered lining was established, and the mechanical properties of the bolts and the interface between segment and secondary lining were realistically simulated. The deformation degree of segment lining when the secondary lining was constructed was used as the construction time of secondary lining, and the influence of the construction time of secondary lining on the longitudinal mechanical properties of double-layered lining shield tunnel was analyzed through the longitudinal equivalent flexural stiffness, longitudinal deformations and longitudinal internal forces of shield tunnel. The researches shown that the ability of shield tunnel structure to resist longitudinal deformation was improved and the longitudinal internal force of segment lining was reduced owing to the construction of secondary lining. The earlier the construction time, the better the effect. However, the secondary lining load-bearing became prominent and the load-bearing capacity of segment lining could not be utilized sufficiently when the secondary lining was constructed early, resulting in a waste of structural capacity. Considering the longitudinal internal force situation of the double-layered lining structure, the reasonable degree was introduced as the judgment criterion, and the reasonable construction time of secondary lining was determined to be 37.5%-62.5%. In this condition, the segment lining deformation was within the tolerance range, and the requirements of engineering economy and structural reliability of tunnel structure could be satisfied at the same time.
王宏超,胡军,周永强,付晓东. 二次衬砌施作时机对盾构隧道纵向力学性能的影响分析[J]. 隧道与地下工程灾害防治, 2024, 6(2): 99-112.
WANG Hongchao, HU Jun, ZHOU Yongqiang, FU Xiaodong. The influence of secondary lining construction time on longitudinal mechanical properties of shield tunnel. Hazard Control in Tunnelling and Underground Engineering, 2024, 6(2): 99-112.
[1] LIN Dong, BROERE Wout, CUI Jianqiang. Metro systems and urban development: impacts and implications[J]. Tunnelling and Underground Space Technology, 2022, 125: 104509. [2] WANG Zhan, WANG Lizhong, LI Lingling, et al. Failure mechanism of tunnel lining joints and bolts with uneven longitudinal ground settlement[J]. Tunnelling and Underground Space Technology, 2014, 40: 300-308. [3] ZHOU Shunhua, DI Honggui, XIAO Junhua, et al. Differential settlement and induced structural damage in a cut-and-cover subway tunnel in a soft deposit[J]. Journal of Performance of Constructed Facilities, 2016, 30(5):04016028. [4] 王士民, 于清洋, 彭博, 等. 基于塑性损伤的盾构隧道双层衬砌三维实体非连续接触模型研究[J]. 岩石力学与工程学报, 2016, 35(2): 303-311. WANG Shimin, YU Qingyang, PENG Bo, et al. Three-dimensional discontinuous contact model for shield tunnels with double-layer lining based on plastic-damage model[J]. Chinese Journal of Rock Mechanics and Engineering, 2016, 35(2): 303-311. [5] 何英杰, 张述琴, 吕国梁. 穿黄隧道内外衬联合受力结构模型试验研究[J]. 长江科学院院报, 2002, 19(增刊1): 64-67. HE Yingjie, ZHANG Shuqin, LÜ Guoliang. Experiment research on united action of inside and outside liner of Yellow-River-Crossing Tunnel of Water Transfer Project from South to North[J]. Journal of Yangtze River Scientific Research Institute, 2002, 19(Suppl.1): 64-67. [6] 张永冠. 铁路盾构隧道双层衬砌力学行为研究[D]. 成都:西南交通大学, 2010. ZHANG Yongguan. Study on the mechanics behavior of railway shield tunnel with double lining[D].Chengdu: Southwest Jiaotong University, 2010. [7] ZHU Yueyue, LIU Cheng, YIN Xiaotian, et al. Analysis of the internal force and deformation characteristics of double-layer lining structure of water conveyance tunnel[J]. Geofluids, 2022, 2022: 9159632. [8] YAN Qixiang, YAO Chaofan, YANG Wenbo, et al. An improved numerical model of shield tunnel with double lining and its applications[J]. Advances in Materials Science and Engineering, 2015, 2015: 430879. [9] 姚超凡, 晏启祥, 何川, 等. 一种改进的盾构隧道双层衬砌分析模型及其应用研究[J]. 岩石力学与工程学报, 2014, 33(1): 80-89. YAO Chaofan, YAN Qixiang, HE Chuan, et al. An improved analysis model for shield tunnel with double-layer lining and its applications[J]. Chinese Journal of Rock Mechanics and Engineering, 2014, 33(1): 80-89. [10] FENG Kun, HE Chuan, FANG Yong, et al. Study on the mechanical behavior of lining structure for underwater shield tunnel of high-speed railway[J]. Advances in Structural Engineering, 2013, 16(8): 1381-1399. [11] EL NAGGAR H, HINCHBERGER S D. An analytical solution for jointed tunnel linings in elastic soil or rock[J]. Canadian Geotechnical Journal, 2008, 45(11): 1572-1593. [12] 陈秋杰, 杨仲轩, 徐荣桥, 等. 一种新的盾构隧道双层衬砌解析分析方法[J]. 岩石力学与工程学报, 2020, 39(增刊1): 2713-2724. CHEN Qiujie, YANG Zhongxuan, XU Rongqiao, et al. A new analytical solution for shield tunnel with double lining[J]. Chinese Journal of Rock Mechanics and Engineering, 2020, 39(Suppl.1): 2713-2724. [13] 张厚美, 过迟, 吕国梁. 盾构压力隧洞双层衬砌的力学模型研究[J]. 水利学报, 2001, 32(4): 28-33. ZHANG Houmei, GUO Chi, LÜ Guoliang. Mechanical model for shield pressure tunnel with secondary linings[J]. Journal of Hydraulic Engineering, 2001, 32(4): 28-33. [14] 张厚美, 连烈坤, 过迟. 盾构隧洞双层衬砌接头相互作用模型[J]. 岩石力学与工程学报, 2003, 22(1): 70-74. ZHANG Houmei, LIAN Liekun, GUO Chi. Joint interaction models for shield tunnel segment reinforced by secondary linings[J]. Chinese Journal of Rock Mechanics and Engineering, 2003, 22(1): 70-74. [15] 晏启祥, 程曦, 何川, 等. 水压条件下盾构隧道双层衬砌力学特性分析[J]. 铁道工程学报, 2010, 27(9): 55-59. YAN Qixiang, CHENG Xi, HE Chuan, et al. Analysis of mechanical properties of double-layered lining of shield tunnel under water pressure[J]. Journal of Railway Engineering Society, 2010, 27(9): 55-59. [16] 晏启祥, 姚超凡, 何川, 等. 水下盾构隧道双层衬砌分析模型的比较研究[J]. 铁道学报, 2015, 37(12): 114-120. YAN Qixiang, YAO Chaofan, HE Chuan, et al. Comparative study of analysis models for underwater shield tunnel with double linings[J]. Journal of the China Railway Society, 2015, 37(12): 114-120. [17] 梁敏飞, 张哲, 李策, 等. 盾构隧道双层衬砌结构三维力学分析模型及验证[J]. 岩土工程学报, 2019, 41(5): 892-899. LIANG Minfei, ZHANG Zhe, LI Ce, et al. Three-dimensional mechanical analysis model and verification of shield tunnels with double-layer linings[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(5): 892-899. [18] 王俊, 徐国文, 蔚艳庆, 等. 一种改进的盾构隧道双层衬砌计算模型及其工程应用[J]. 岩土工程学报, 2021, 43(8): 1502-1510. WANG Jun, XU Guowen, WEI Yanqing, et al. An improved model for shield tunnels with double-layer linings and its application in engineering[J]. Chinese Journal of Geotechnical Engineering, 2021, 43(8): 1502-1510. [19] SHI Yujin, XIAO Xiao, LI Mingguang. Long-term longitudinal deformation characteristics of metro lines in soft soil area[J]. Journal of Aerospace Engineering, 2018, 31(6):04018080. [20] QIU Jutao, JIANG Jie, ZHOU Xiaojun, et al. Analytical solution for evaluating deformation response of existing metro tunnel due to excavation of adjacent foundation pit[J]. Journal of Central South University, 2021, 28(6): 1888-1900. [21] HUANG Zhen, ZHANG Hai, FU Helin, et al. Deformation response induced by surcharge loading above shallow shield tunnels in soft soil[J]. KSCE Journal of Civil Engineering, 2020, 24(8): 2533-2545. [22] 张迪, 陈睿杰, 廖少明. 盾构隧道双层衬砌结构纵向等效弯曲刚度研究:以上海吴淞口长江隧道工程为例[J].隧道建设(中英文), 2021, 41(增刊1): 28-35. ZHANG Di, CHEN Ruijie, LIAO Shaoming. Study of longitudinal equivalent bending stiffness of double-layered lining of shield tunnel: a case study of Wusongkou Yangtze River-Crossing Tunnel in Shanghai[J]. Tunnel Construction, 2021, 41(Suppl.1): 28-35. [23] 何川, 郭瑞, 肖明清, 等. 铁路盾构隧道单、双层衬砌纵向力学性能的模型试验研究[J]. 中国铁道科学, 2013, 34(3): 40-46. HE Chuan, GUO Rui, XIAO Mingqing, et al. Model test on longitudinal mechanical properties of single and double layered linings for railway shield tunnel[J]. China Railway Science, 2013, 34(3): 40-46. [24] 郭文琦, 陈健, 王士民, 等. 二衬厚度对盾构隧道双层衬砌纵向力学性能的影响[J]. 铁道标准设计, 2020, 64(2): 142-148. GUO Wenqi, CHEN Jian, WANG Shimin, et al. The influence of the thickness of secondary lining on the longitudinal mechanical properties of shield tunnel with double-layer lining[J]. Railway Standard Design, 2020, 64(2): 142-148. [25] 王永刚, 丁文其, 刘志强, 等. 木寨岭隧道大变形分级标准与支护时机研究[J]. 地下空间与工程学报, 2020, 16(4): 1116-1122. WANG Yonggang, DING Wenqi, LIU Zhiqiang, et al. Classification standard of large deformation and construction time of second lining in Muzhailing Tunnel[J]. Chinese Journal of Underground Space and Engineering, 2020, 16(4): 1116-1122. [26] 刘洋, 龚振华, 梁敏飞, 等. 考虑变荷载影响的水下盾构隧道双层衬砌力学特性分析[J]. 铁道标准设计, 2022, 66(7): 101-107. LIU Yang, GONG Zhenhua, LIANG Minfei, et al. Analysis of mechanical characteristics of shield tunnel with double-layer lining considering variable loads[J]. Railway Standard Design, 2022, 66(7): 101-107. [27] 王士民, 陈兵, 王先明, 等. 盾构隧道二次衬砌合理施作时机模型试验研究[J]. 岩土工程学报, 2020, 42(5): 882-891. WANG Shimin, CHEN Bing, WANG Xianming, et al. Model tests on reasonable construction time of secondary lining of shield tunnel[J]. Chinese Journal of Geotechnical Engineering, 2020, 42(5): 882-891. [28] HU Jun, CHAI Shaobo, WANG Hongchao, et al. Longitudinal mechanical properties of shield tunnels crossing soft and hard mutation strata[J]. International Journal of Geomechanics, 2023, 23(12): 04023225. [29] DO N A, DIAS D, ORESTE P, et al. 2D numerical investigation of segmental tunnel lining under seismic loading[J]. Soil Dynamics and Earthquake Engineering, 2015, 72: 66-76. [30] DO N A, DIAS D, ORESTE P, et al. 2D numerical investigation of segmental tunnel lining behavior[J].Tunnelling and Underground Space Technology, 2013, 37: 115-127. [31] 封坤. 大断面水下盾构隧道管片衬砌结构的力学行为研究[D]. 成都:西南交通大学, 2012. FENG Kun. Research on mechanical behavior of segmental lining structure for underwater shield tunnel with large cross-section[D]. Chengdu: Southwest Jiaotong University, 2012. [32] Itasca Consulting Group Inc.. FLAC3D user's manual version6.0[M]. Minnesota,US:Itasca Consulting Group Inc., 2019. [33] 何川, 封坤, 孙齐, 等. 盾构隧道结构耐久性问题思考[J]. 隧道建设(中英文), 2017, 37(11): 1351-1365. HE Chuan, FENG Kun, SUN Qi. Consideration on issues about structural durability of shield tunnels[J]. Tunnel Construction, 2017, 37(11): 1351-1365. [34] 张治国,程志翔,张孟喜,等. 考虑衬砌渗透性的盾构下穿既有隧道纵向结构错台变形研究[J]. 中国公路学报, 2022, 35(11): 180-194. ZHANG Zhiguo, CHENG Zhixiang, ZHANG Mengxi, et al. Dislocation deformation for existing tunnel longitudinal structure induced by shield tunneling by under-crossing type considering influence of lining permeability[J]. China Journal of Highway and Transport, 2022, 35(11): 180-194. [35] 肖明清. 复合式衬砌隧道的总安全系数设计方法探讨[J]. 铁道工程学报, 2018, 35(1): 84-88. XIAO Mingqing. Discussion on design method of general safety factor of composite lining tunnel[J]. Journal of Railway Engineering Society, 2018, 35(1): 84-88.