›› 2008, Vol. 29 ›› Issue (5): 1387-1390.

• Geotechnical Engineering • Previous Articles     Next Articles

3D numerical analysis of influence of tunnel construction on neighboring viaduct

LIU Ting-jin1, WEI Li-xin2, FANG Ying-guang1, MO Hai-hong1   

  1. 1. State Key Laboratory of Subtropical Architecture Science, Department of Civil Engineering, South China University of Technology, Guangzhou 510640, China; 2. Guangzhou Municipal Engineering Design and Research Institute, Guangzhou 510060, China
  • Received:2007-04-06 Online:2008-05-10 Published:2013-07-24

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Abstract: Influence on the neighboring viaduct pier’s extending footings was numerically studied by using MSC.Marc 3-D software, which induced by the tunnel staged construction and the traffic loading during the working period. The incremental developments of these extending footings’ stresses, settlements and inclinations were analysised, as well as the retaining structure’s lateral displacements. And the obtained results indicate that: (1) These extending footing’s unloading during the construction is due to that the tunnel bottom level is higher than these extending footing’s. (2) The No. 6 extending footing’s inclination and settlement is mainly induced by the planning traffic loading which directly acting on its one top side. (3) The extending footing’s maximum inclination is 0.000 6. (4) The extending footing’s maximum settlement induced by the tunnel traffic loading is 3.7 mm. Combined with the obtained results of the groundwater seepage, it deems that the tunnel construction and working period does not endanger the viaduct’s safety theoretically.

Key words: tunnel engineering, staged construction, traffic loading, 3D numerical simulation, dynamic response, high-bridge, extending footing

CLC Number: 

  • U 45
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