Deformation study of Lining on Overlap Tunnels Based on Elastic Foundation Beam

Abstract:

Tunnels of new across the old one with short distance is the emphasis and difficulty in metro engineering development, which has great research values. According to the characteristic of deformation on overlap tunnels with short distance, we put forward the calculating model of lining deformation and internal force analysis. And deduced the formula of calculation on the new tunnel's construction to adjacent ones, then discussed and analyzed the settlement of the point of inflection on soffit lining and the greatest subsidence angle. We verify the theoretical formula about the reliability of the computation and rationality through a series of numerical simulation test against the background of Qingdao overlap tunnels.

• Periodical: Applied Mechanics and Materials (Volumes 94-96)
• Pages: 1875-1878
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.94-96.1875
• Online since: September 2011
• Authors: Chun Quan Dai, Lei Wang, Yong Ji Wang
• Keywords: Deformation of Existing Tunnel, Numerical Simulation, Overlap Tunnels, Theoretical Model

References

[1] Sun Jun, Liu Hong-zhou. 3-D Numerical Simulation of Ground Surface Settlement under Overlapped Shield Tunneling[J]. Journal of Tongji University. 2002,30(4):379-385

[2] Zhang Hai-bo, Yin Zong-ze, Zhu Jun-gao. Numerical simulation of influence of new tunnel on short distance overlapped old tunnel during shield tunneling [J]. Rock and Soil Mechanics, 2005, 26(2):282-287

[3] E.S.limau, H.Duddeck & Ahrens. Two-and Three-dimensional Analysis of Close Spaced Double-tube Tunnels. Tunneling and Underground Space Technology, 1993,8(1):453-458

DOI: 10.1016/0886-7798(93)90130-n