Analysis of the influence of shield construction on the surrounding ground surface settlement

DOI

10.2991/iconfem-16.2016.14How to use a DOI?

Keywords

Shield construction,Surface subsidence,influence factor

Abstract

Based on the background of a double line shield tunnel in Shenyang metro, the construction process of double line shield is simulated by using the finite element analysis software of GTS Midas. The change course of ground surface settlement during construction and the influence of the physical and mechanical properties of soil on the ground surface settlement are studied. The obtained results have certain guiding significance for the construction of similar double line metro shield tunneling. Research results:(1) In most of the excavation and has not yet been lining construction process, settlement of ground surface often appear bigger change. (2)The elastic modulus of soil is gradually increased, and the land subsidence is getting smaller and smaller. But when the elastic modulus is increased to 100Mpa, the surface periphery may be elevated. (3)With the internal friction angle of the soil decreased, the amount of land subsidence is more and more large. And the surface periphery may be elevated. (4)The correction coefficient n=0.84 values are converted to the revised calculated values and measured values are close. However, there is a need for further analysis and Research on the change trend of the settlement.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Bing Li
AU  - Fengying Ji
PY  - 2017/01
DA  - 2017/01
TI  - Analysis of the influence of shield construction on the surrounding ground surface settlement
BT  - Proceedings of the 2016 International Conference on Engineering Management (Iconf-EM 2016)
PB  - Atlantis Press
SN  - 2352-5428
UR  - https://doi.org/10.2991/iconfem-16.2016.14
DO  - 10.2991/iconfem-16.2016.14
ID  - Li2017/01
ER  -