Numerical Analyses of Frost Heave on Gongbei Tunnel Constructed by Freeze-sealing Pipe Roof Method
- DOI
- 10.2991/meic-15.2015.194How to use a DOI?
- Keywords
- Hong Kong-Zhuhai-Macau Bridge; Gongbei Tunnel; Freeze-sealing Pipe Roof Method; Frost heave; Displacement
- Abstract
Gongbei Tunnel project at the Zhuhai link of Hong Kong-Zhuhai-Macau Bridge is to be constructed by a new construction method – “Freeze-Sealing Pipe Roof” (FSPR), serving as a forepoling system, combining with mining method. The primary purpose of this paper is to analyze the problem of frost heave in FSPR construction. The analyses of the influence of frost heave on the deformation of ground surface and the displacement of the pipes is conducted using numerical simulation. The results demonstrate that: (1) Within the actual buried depth of the tunnel, the buried depth has little impact on the deformation of pipe-roof and ground surface caused by frost heave; (2) Both the amount and the range of the deformation of ground is positively correlated to the thickness of the frozen-wall; (3) The uneven settlement of ground surface caused by frost heave is more obvious within 50m away from the tunnel axis and therefore the gradient of surface elevation beyond 50m is relatively slight; (4) The influence of the deformation of pipe-roof should be taken into consideration during the design of supporting structures as the deformation of pipe-roof caused by frost heave is closely related to the thickness of frozen-wall.
- Copyright
- © 2015, 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 - Jian Li AU - Jin Chen AU - Xiaodong Guo PY - 2015/04 DA - 2015/04 TI - Numerical Analyses of Frost Heave on Gongbei Tunnel Constructed by Freeze-sealing Pipe Roof Method BT - Proceedings of the 2015 International Conference on Mechatronics, Electronic, Industrial and Control Engineering PB - Atlantis Press SP - 847 EP - 851 SN - 2352-5401 UR - https://doi.org/10.2991/meic-15.2015.194 DO - 10.2991/meic-15.2015.194 ID - Li2015/04 ER -