Analysis for Influence of Excavation on Adjacent Existing Shield Tunnel
- 10.2991/mmme-16.2016.180How to use a DOI?
- Excavation; Existing shield tunnel; Soil arch effect; Pit outer disturbed zone; Surrounding rock pressure
The horizontal earth pressure of shield tunnel affected by excavation was analyzed. Firstly, the foundation pit excavation disturbance zone boundary and the strain of level unit soil in disturbance zone were assumed. Meanwhile, the formula for calculating the horizontal earth pressure in the disturbed zone of the pit is derived. Afterwards, combined with the proposed earth pressure theory and soil arch theory, the model of horizontal earth pressure of shield tunnel consider the affected by foundation pit excavation was established. Finally, joining an engineering example, verify the rationality of the basic assumptions and theoretical deduction. The result shows that when the tunnel is located in the disturbed zone of the foundation pit, surrounding rock pressure on both sides of the tunnel will be effected, and the sides of shield tunnel near foundation pit will be larger influenced by excavation.
- © 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/).
Cite this article
TY - CONF AU - Jing Cao AU - Guowei Qian AU - Haixi Zuo AU - Haiming Liu AU - Yaliang Ren PY - 2016/10 DA - 2016/10 TI - Analysis for Influence of Excavation on Adjacent Existing Shield Tunnel BT - Proceedings of the 2016 4th International Conference on Mechanical Materials and Manufacturing Engineering PB - Atlantis Press SP - 751 EP - 758 SN - 2352-5401 UR - https://doi.org/10.2991/mmme-16.2016.180 DO - 10.2991/mmme-16.2016.180 ID - Cao2016/10 ER -