›› 2015, Vol. 36 ›› Issue (11): 3201-3209.doi: 10.16285/j.rsm.2015.11.022

• Geotechnical Engineering • Previous Articles     Next Articles

Effect of foundation pit excavation and structural construction of new engineering on existing underlying tunnel

XU Chang-jie1, 2, WANG Yi-li2, XU Yuan-lei3, WANG Jin-chang4   

  1. 1. School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang, Jiangxi 330013, China; 2. Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou, Zhejiang 310058, China; 3. Zhejiang Academy of Building Research & Design Co., Ltd., Hangzhou, Zhejiang 310013, China; 4. Institute of Transportation Engineering, Zhejiang University, Hangzhou, Zhejiang 310058, China
  • Received:2014-04-13 Online:2015-11-11 Published:2018-06-14
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos.51278449, 51238009 and 51338009) and Hangzhou Urban And Rural Construction Committee (Grant No.2010391).

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Abstract: With the development of city construction, it is common to see more and more cross construction phenomena of the ground engineering and the underground engineering, which unavoidably contributes to the effect of the new construction on the existing construction. Therefore, on the premise of ensuring the safety of the existing construction, how to construct new projects has become one of the important issues for numerous scholars. In this paper, the finite element numerical simulation analysis method of ABAQUS and the simplified specification corner-points method are applied to analyze comparatively an engineering construction adjacent to the existing underlying tunnel. On this basis, the effects of the pit excavation and its subsequent construction on the underlying existing tunnel are evaluated. The field monitoring data demonstrate that the two methods, i.e. the numerical analysis method and the traditional theory of soil mechanics method, are coincidently available in such engineering construction which has clear boundary and explicit load and can secure engineering. The research also shows that the two-dimensional analysis model not only has the smaller calculation workload, but also has more security compared with a three-dimensional model considering practical engineering conditions.

Key words: foundation pit excavation, built tunnel, new engineering, numerical analysis, specification corner-points method

CLC Number: 

  • TV 551.4+2
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