1. bookVolume 16 (2021): Issue 2 (December 2021)
Journal Details
License
Format
Journal
eISSN
1338-7278
First Published
29 Mar 2013
Publication timeframe
2 times per year
Languages
English
access type Open Access

Effects of different processes of tunneling on displacements soil using 3D Finite Element Method

Published Online: 30 Dec 2021
Volume & Issue: Volume 16 (2021) - Issue 2 (December 2021)
Page range: 203 - 217
Journal Details
License
Format
Journal
eISSN
1338-7278
First Published
29 Mar 2013
Publication timeframe
2 times per year
Languages
English
Abstract

The excavation process of tunnels induces stresses and deformation in the surrounding soil. The method of excavation is one of the major problems related to the safety of the operators and the ground stability during the construction of underground works. So, it is necessary to choose an ideal method to minimize the displacements and stresses induced by tunneling.

The main aim of this study is to simulate numerically the effect of different processes of tunneling on ground displacements, the settlements at surface soil and the internal efforts induced in the lining tunnel; in order to select the best process of excavation, which gives us a less effects on displacements generated by tunneling, thus, ensuring the stability and the solidity of the underground constructions. In addition, this study allows us to control and to predict the diverse movements generated by tunneling (displacements, settlements, efforts internes) exclusively for the shallow tunnel nearby to the underground constructions in the urban site. This modeling will be done by employing five different processes for tunnel excavation using the NATM (New Austrian Tunneling Method) method.

The first process, the modeling of the excavation tunnel, is done almost in the same way as in reality; the partial face excavation, with seven slices, made by the excavation. The second process, by partial face excavation, is divided into eleven slices, next, we used the partial face excavation by nine slices, and then in thirteen slices. Finally, the dig is made by full-face excavation.

The paper contributes to the prediction of the response of the soil environment to tunnel excavation using the NATM method and to minimize the diverse movements generated by tunneling. The appropriately chosen methodology confirms that displacements and subsidence are strongly influenced by the tunneling method. The three-dimensional Finite Elements Method using Plaxis3D program has been applied in the numerical simulation. The study resulted in the recommendation of a process that minimizes the effect of excavation on subsidence and ground displacement for a particular Setiha tunnel.

Keywords

[1] Bousbia Nawel, Messast Salah (2015). Numerical modeling of two parallel tunnels interactions using three- dimensional finite element. Geomechanics & Engineering. 9(6), 775-79110.12989/gae.2015.9.6.775 Search in Google Scholar

[2] Moorak Son, Edward J. Cording (2008). Numerical model tests of building response to excavation-induced ground movements. Canadian Geotechnical Journal. 45(11), 1611-162110.1139/T08-074 Search in Google Scholar

[3] Alan Graham Bloodworth (2002). Three-dimensional analysis of tunneling effects on structures to develop design methods. Ph.D. Thesis, University of Oxford, UK Search in Google Scholar

[4] C.W.W. Ng, H. Lu (2014). Effects of the construction sequence of twin tunnels at different depths on an existing pile. Canadian Geotechnical Journal. 51(2), 173-18310.1139/cgj-2012-0452 Search in Google Scholar

[5] Messast. S, Hazem. M, Bousbia1 N, Mokhbi H (2014). Numerical modeling of the face reinforcement of Djebel El-Kantour tunnel face (highway east-west). J. Appl. Eng. Sci. Techno. 1(1) 23-29. Search in Google Scholar

[6] Shinji. (2009). Three-dimensional numerical modeling of a NATM tunnel. International Journal of the Japanese Committee for Rock Mechanics 5.33-38. Search in Google Scholar

[7] Loganathan N and Poulos H G. (1998). Analytical Predictions of Tunnelling Induced Ground Movements. Geotechnical Engineering Journal.124 (9).10.1061/(ASCE)1090-0241(1998)124:9(846) Search in Google Scholar

[8] Loganathan, N, Poulos, HG, Bustos-Ramirez, A (2000). Estimation of ground loss during tunnel excavation. Geo.Eng. Australia, November Search in Google Scholar

[9] Thayanan Boonyarak, Charles W.W. Ng (2015). Effects of construction sequence and cover depth on Crossing-tunnel interaction. Canadian Geotechnical Journal.52(7) 851-86710.1139/cgj-2014-0235 Search in Google Scholar

[10] Dong, Y, Burd, H.J, Houlsby,G,T (2016). Finite element analysis of a deep excavation case history”, Geotechnique, 66 (1), 1-1510.1680/jgeot.14.P.234 Search in Google Scholar

[11] Giovanni Barla. (2016). Full face excavation of large tunnels in difficult conditions. Journal of rock mechanics and geotechnical engineering. 8, 294-30310.1016/j.jrmge.2015.12.003 Search in Google Scholar

[12] Guo-Hua Zhang, Yu-Yong Jiao, Li-Biao Chen, Hao Wang, Shu-Cai Li. (2016). Analytical model for assessing collapse risk during mountain tunnel construction. Canadian Geotechnical Journal.53(2), 326-342 Search in Google Scholar

[13] Guo-Hua Zhang, Yu-Yong Jiao, Hao Wang (2014). Outstanding issues in excavation of deep and long rock tunnels: a case study. Canadian Geotechnical Journal. 51(9), 984-994 Search in Google Scholar

[14] J Y Ruwanpura, S M AbouRizk, M Allouche (2004). Analytical methods to reduce uncertainty in tunnel construction projects. Canadian Geotechnical Journal.31(2), 345-360 Search in Google Scholar

[15] Kaveh Ahangari, Sayed Rahim Moeinossadat, Danial Behnia (2015). Estimation of tunneling- induced settlement by modern intelligent methods. Soils and foundations 55(4), 737-74810.1016/j.sandf.2015.06.006 Search in Google Scholar

[16] R. K. Rowe, K. Y. Lo, G. J. Kack (1983). A method of estimating surface settlement above tunnels constructed in soft ground. Canadian Geotechnical Journal 20(1) 1-2210.1139/t83-002 Search in Google Scholar

[17] Rolf Zumsteg, Lars Langmaac (2017). Mechanized tunneling in soft soils: Choice of excavation mode and application of soil conditioning additives glacial deposits. Engineering 3, 863-87010.1016/j.eng.2017.11.006 Search in Google Scholar

[18] Wang Ran (2017). Effects of the existing tunnel shape on three-dimensional crossing tunnels interaction in sand: Centrifuge and numerical modeling. PhD thesis. University of Hong Kong, China Search in Google Scholar

[19] Yu Wang, Jiangwei Shi, Charles W.W. Ng (2011). Numerical modeling of tunneling effect on buried pipelines. Canadian Geotechnical Journal. 48(7) 1125-113710.1139/t11-024 Search in Google Scholar

[20] Zdravkovic, L, Potts, D, M, St. John H, D (2005). Modeling of a 3D excavation in finite element analysis. Geotechnique. 55(7) 497-51310.1680/geot.2005.55.7.497 Search in Google Scholar

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