|
|
|
| NUMERICAL ANALYSIS OF SHIELD TUNNEL SETTLEMENT CONSIDERING CONSTRUCTION PROCESS |
| WANG Fei1，MIAO Linchang1，LI Chunlin1，2 |
(1. Institute of Geotechnical Engineering，Southeast University，Nanjing，Jiangsu 210096，China；
2. Department of Civil and Architecture Engineering，Tongling University，Tongling，Anhui 244000，China) |
|
|
|
|
Abstract Ground settlement induced by subway tunneling is becoming one of the main causes of ground subsidence. It strongly affects the serviceability of superstructures and pipelines around the subway tunnel. Therefore，it is very important to predict the settlement accurately. Numerical simulation was conducted to investigate the influence of grouting pressure and working face thrust force on the ground settlement caused by tunneling. The grouting pressure and working face thrust force were normalized using the gravity of the overburden soil and the lateral static earth pressure，respectively. Based on the equivalent ground loss method proposed by K. M. Lee et al.，procedures considering the construction effect during shield tunneling were put forward to estimate the ground settlement. Comparison numerical and calculated results demonstrates the effectiveness of the proposed method.
|
|
Received: 27 August 2011
|
|
|
|
| [1] LECA E，NEW B. Settlements induced by tunneling in soft ground[J]. Tunnelling and Underground Space Technology，2007，22(2)：119–149.
[2] PECK R B. Deep excavations and tunneling in soft ground，state of art report[C]// Proceedings of the 7th International Conference of Soil Mechanics and Foundation Engineering. Mexico City：[s. n.]，1969：225–290.
[3] 姜忻良，赵志民，李 圆. 隧道开挖引起土层沉降槽曲线形态的分析与计算[J]. 岩土力学，2004，25(10)：1 542–1 544.(JIANG Xinliang，ZHAO Zhimin，LI Yuan. Analysis and calculation of surface and subsurface settlement trough profiles due to tunneling[J]. Rock and Soil Mechanics，2004，25(10)：1 542–1 544.(in Chinese))
[4] 魏 纲，吴华君，陈春来. 顶管施工中土体损失引起的沉降预测[J]. 岩土力学，2007，28(2)：359–363.(WEI Gang，WU Huajun，CHEN Chunlai. Prediction of settlement induced by ground loss during pipe jacking construction[J]. Rock and Soil Mechanics，2007，28(2)：359–363.(in Chinese))
[5] MAIR R J，TAYLOR R N，BRACEGIRDLE A. Subsurface settlement profiles above tunnels in clays[J]. Geotechnique，1993，43(2)：315–320.
[6] LEE K M，ROWE R K，LO K Y. Subsidence owing to tunnelling I：estimating the gap parameter[J]. Canadian Geotechnical Journal，1992，29(6)：929–940.
[7] SUGIYAMA T，HAGIWARA T，NOMOTO T，et al. Observations of ground movements during tunnel construction by slurry shield method at the Docklands light railway Lewisham extension—East London[J]. Soils and Foundations，1999，39(3)：99–112. |
| [1] |
MAO Yuting1, 2, HE Manchao1, 2, LIU Fangzhou3, BAI Xing4, YANG Xiaojie1, 2, TAO Zhigang1, 2*. Development and application of a large-scale physical model system for tunnel creep testing[J]. , 2026, 45(6): 1627-1638. |
|
|
|
|
2013, Vol. 32 
