Deformation of a deep excavation adjacent to metro tunnels in soft soils

被引：0
|
作者：
Xu Z.-H. [1 ,2 ]
Zong L.-D. [1 ,2 ]
Shen J. [1 ,2 ]
Wang W.-D. [1 ,2 ]
机构：
[1] Shanghai Underground Space Engineering Design & Research Institute, East China Architecture Design & Research Institute Co., Ltd., Shanghai
[2] Shanghai Engineering Research Center of Safety Control for Facilities Adjacent to Deep Excavations, Shanghai
来源：
Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | 2019年 / 41卷
关键词：
Bottom-up method; Excavation; Measurement analysis; Metro tunnel; Sub-pitting;
D O I：
10.11779/CJGE2019S1011
中图分类号：
学科分类号：
摘要：
The deep excavation of Shanghai Bund 596 Plot is adjacent to the metro tunnels of Line 9, pipelines and buildings. In order to control the impact of excavation construction on the metro tunnels, many measures are adopted in the design of the project. The deep excavation is divided into four small pits, and the block excavation method was adopted. Dual-purpose diaphragm walls are used as retaining walls. The steel struts with automatic axial force compensation system are adopted in the small pits just adjacent to the metro tunnels. The soils in the passive zone are reinforced by triaxial cement-soil mixing piles. The monitored results show that the maximum lateral displacement of the diaphragm walls far away from the tunnels and that just adjacent to the tunnels are 45.6 and 17.2 mm, respectively. The maximum upheaving of the tunnels is about 12.9 mm. The design scheme satisfies the requirements of deformation control of the adjacent tunnels. © 2019, Editorial Office of Chinese Journal of Geotechnical Engineering. All right reserved.
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页码：41 / 44
页数：3
相关论文
共 3 条
  • [1] Burford D., Heave of tunnels beneath the shell centre, Géotechnique, 38, 1, pp. 135-137, (1988)
  • [2] Kuang L.-C., Influence of construction of deep foundation pit on tunnels of metro, Chinese Journal of Geotechnical Engineering, 3, pp. 284-288, (2000)
  • [3] Jiang H.-S., Hou X.-Y., The influence of deep excavation on adjacent metro tunnel in soft ground, Industrial Construction, 5, pp. 53-56, (2002)
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