ISSN 2096-4498
CN 44-1745/U
Tunnel Construction ›› 2018, Vol. 38 ›› Issue (4): 594-602.DOI: 10.3973/j.issn.2096-4498.2018.04.010
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YI Dan1, YAN Detian2, DANG Jun3
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Abstract:
The influence of large crosssection rectangular EPBtype pipe jacking tunnel under South Renmin Road on below operating metro tunnel deformation is analyzed; and then comparison between simulation results and monitoring data is made to verify the rationality of the simulation model. Some conclusions are drawn as follows: (1) The vertical deformation of the below existing metro tunnel induced by the construction of the pipe jacking tunnel is greatly affected by supporting pressure of excavation face in the early stage; and it is mainly affected by excavation unloading effect as the excavation face moves forward. (2) The horizontal displacement of the metro tunnel is affected by supporting pressure of excavation face and excavation unloading effect; and the upper crosssection of metro tunnel segment lining is significantly affected by supporting pressure of excavation face.
Key words: large crosssection pipe jacking tunnel, crossing above metro tunnel, deformation, supporting pressure, excavation unloading effect
CLC Number:
U 455.47
YI Dan, YAN Detian, DANG Jun. Study of Influence of Construction of Large Crosssection Rectangular EPBtype Pipe Jacking Tunnel on Below Operating Metro Tunnel Deformation[J]. Tunnel Construction, 2018, 38(4): 594-602.
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URL: http://www.suidaojs.com/EN/10.3973/j.issn.2096-4498.2018.04.010
http://www.suidaojs.com/EN/Y2018/V38/I4/594