Abstract: Based on a power pipe tunnel project in Xiasha, Hangzhou, 3D finite element software ABAQUS was used to conduct numerical simulation of parallel pipe jacking process, the effects of successive pipe jacking staggered distance and mud-water pressure on soil settlement were studied.The maximum settlement was located directly above the center line of parallel pipe jacking and deviates from the leading pipe. The settlement caused by the descending pipe was 1.5 times that of the leading pipe; when the mud pressure was close to the static earth pressure, the settlement was the smallest; with the increasing of the staggered distance between the leading pipe and the descending tube, the soil settlement generally decreased. Meanwhile, the soil settlement generated by jacking was about 2 times as much as that generated by separate jacking. After the cross distance exceeded 4.31 times of the outside diameter of the pipe joint, the settlement had little change.
吴健, 王其炎, 陈建军. 大口径平行顶管施工对地表沉降的影响[J]. 隧道与地下工程灾害防治, 2021, 3(4): 68-74.
WU Jian, WANG Qiyan, CHEN Jianjun. The influence of large diameter parallel pipe jacking on surface subsidence. Hazard Control in Tunnelling and Underground Engineering, 2021, 3(4): 68-74.
[1] 魏纲,魏新江,屠毓敏.平行顶管施工引起的地面变形实测分析[J]. 岩石力学与工程学报, 2006,25(增刊1):3299-3304. WEI Gang,WEI Xinjiang,TU Yumin.Analysis of site monitoring of ground deformation induced by parallel pipe jacking construction[J]. Chinese Journal of Rock Mechanics and Engineering, 2006, 25(Suppl.1): 3299-3304. [2] 魏新江,魏纲. 水平平行顶管引起的地面沉降计算方法研究[J]. 岩土力学,2006,27(7):1129-1132. WEI Xinjiang, WEI Gang. Study on calculational method of ground settlement induced by level parallel pipe jacking[J]. Rock and Soil Mechanics, 2006, 27(7): 1129-1132. [3] 王道伟,王福芝,黎轩,等.水平平行顶管相互影响试验研究[J]. 地质科技情报, 2016, 35(2):71-74. WANG Daowei, WANG Fuzhi, LI Xuan, et al. Experimental study on influence between horizontal parallel pipe jacking[J].Geological Science and Technology Information, 2016, 35(2):71-74. [4] 张云杰.小间距大直径双孔顶管顶进对周围土体的影响[D].哈尔滨:哈尔滨工业大学,2013. ZHANG Yunjie. The analysis on the surrounding soil deformation by propulsion of closely spaced parallel pipes with large diameter[D].Harbin:Harbin Institute of Technology, 2013. [5] 黄志远.平行顶管相互影响关系研究[D].北京:中国地质大学(北京),2017. HUANG Zhiyuan. Study on the interaction of parallel pipe jacking[D]. Beijing:China University of Geosciences(Beijing), 2017. [6] PECK R B. Deep excavations and tunneling in soft ground[C] //Proceedings of the 7th International Conference onSoil Mechanics and Foundation Engineering. Mexico City, Mexico: ICSMFE, 1969: 225-290. [7] MARTOS F. Concerning an approximate equation of the subsidence trough and its time factor[C] //International Strata Control Congress.Leipzig, Germany:[s.n.] , 1958:191-205. [8] ATTEWELL P B, FARMER I W. Ground settlement above shield driven tunnels in clay[J].International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1975, 12(4):61. [9] 刘建航,侯学渊. 盾构法隧道[M].北京:中国铁道出版社,1991. [10] 房营光,莫海鸿,张传英. 顶管施工扰动区土体变形的理论与实测分析[J]. 岩石力学与工程学报, 2003,22(4):601-605. FANG Yingguang, MO Haihong, ZHANG Chuanying.Theoretic and testing analysis of soil deformation in the area of disturbance caused by pipe-jacking[J]. Chinese Journal of Rock Mechanics and Engineering, 2003, 22(4): 601-605. [11] 魏纲. 顶管工程土与结构的性状及理论研究[D].杭州:浙江大学,2005. WEI Gang. Theoretical study on properties of soil and structure during pipe jacking construction[D]. Hangzhou: Zhejiang University, 2005. [12] 胡熹竹. 大口径管道前后同步平行顶进施工法初探[J].上海市政工程, 1999(1):30-33. HU Xizhu. Preliminary study on synchronous parallel jacking construction method for large diameter pipeline[J]. Shanghai Municipal Engineering, 1999(1):30-33. [13] 张凯,武永新,田润泽. 并行顶管不同纵向间距下施工数值模拟分析[J]. 地下空间与工程学报, 2020, 16(增刊2): 835-840. ZHANG Kai, WU Yongxin, TIAN Runze.Numerical simulation analysis on parallel pipe jacking under different longitudinal spacing[J].Chinese Journal of Underground Space and Engineering, 2020, 16(Suppl.2): 835-840. [14] 曹宇春,诸葛恒源,曾阳,等. 大口径顶管施工对地表沉降的影响分析[J]. 科技通报,2019,35(6):75-79. CAO Yuchun, ZHUGE Hengyuan, ZENG Yang, et al. Influence of large diameter pipe jacking construction on ground surface settlement[J].Bulletin of Science and Technology, 2019, 35(6):75-79.
2021, Vol. 3 
