Construction Sequence Optimization of Overlap Shield Tunnel Beneath Water Supply Pipe in Close Distance

XUE Yong-jian; ZHU Xu-hui; WANG She-jiang; ZHANG Ya-yong; WU Feng; ZHAO Jin-hui

doi:10.13204/j.gyjzG22062508

Volume 52 Issue 9

Sep. 2022

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2022 > 52(9): 219-223,146

XUE Yong-jian, ZHU Xu-hui, WANG She-jiang, ZHANG Ya-yong, WU Feng, ZHAO Jin-hui. Construction Sequence Optimization of Overlap Shield Tunnel Beneath Water Supply Pipe in Close Distance[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(9): 219-223,146. doi: 10.13204/j.gyjzG22062508

Citation:

XUE Yong-jian, ZHU Xu-hui, WANG She-jiang, ZHANG Ya-yong, WU Feng, ZHAO Jin-hui. Construction Sequence Optimization of Overlap Shield Tunnel Beneath Water Supply Pipe in Close Distance[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(9): 219-223,146. doi: 10.13204/j.gyjzG22062508

Citation:

XUE Yong-jian, ZHU Xu-hui, WANG She-jiang, ZHANG Ya-yong, WU Feng, ZHAO Jin-hui. Construction Sequence Optimization of Overlap Shield Tunnel Beneath Water Supply Pipe in Close Distance[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(9): 219-223,146. doi: 10.13204/j.gyjzG22062508

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Construction Sequence Optimization of Overlap Shield Tunnel Beneath Water Supply Pipe in Close Distance

doi: 10.13204/j.gyjzG22062508

1. Suzhou Rail Transit Group Co., Ltd., Suzhou 215003, China;
2. School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China;
3. China Shanghai Civil Engineering Group Co., Ltd., of CREC, Shanghai 201101, China

Received Date: 2022-06-25
Available Online: 2023-02-06

Abstract

Abstract

Based on the overlap shield tunnel beneath the water supply pipe between Xiandaidadao Station and Loujiangdadao Station of Suzhou Metro Line 3, numerical method was used to analyze the mechanical properties of new structure-existing structure-earth’s surface under different construction sequences ("first lower then upper" or "first upper then lower"). And the better construction sequence was recommended considering the earth’s surface settlement, the water supply pipe deformation and the shield lining deformation. Combined with site monitor results, the influence of construction on water supply pipe was analyzed. Through the above research, the following conclusions were obtained: 1) constructions of overlapping tunnels caused two disturbances to the water supply pipe, and the adverse effects gradually increased; 2) the influence of lower tunnel construction on earth’s surface settlement and water supply pipe deformation was less than that of upper tunnel construction; 3) the construction sequence "first lower then upper" should be recommended; 4) the deformation of the water supply pipe caused by the construction of overlapping tunnels could meet the requirements of normal use of the water supply pipe.
- overlap shield tunnel,
- shield,
- beneath,
- construction sequence

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References

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