JOURNAL OF YANGTZE RIVER SCIENTIFIC RESEARCH INSTI ›› 2010, Vol. 27 ›› Issue (7): 60-64.

• HEALTHY CHANGJIANG RIVER • Previous Articles     Next Articles

Analysis on Longitudinal Deformation of Tunnel Crossed Yellow River by 3-D Finite Element

XIE Xiao-ling1,2, SU Hai-dong1,2, LIN Shao-zhong1,3   

  1. 1.Research Center on Water Engineering Safety and Disaster Prevention of Minist ry of Water Resources, Wuhan 430010, China ; 2.Dept. of Material and Structure, Yangtze River Scientific Research Institute, Wuhan 430010, China ; 3. DDA Center of Yangtze River Scientific Research Institute, Wuhan 430010, China
  • Online:2010-07-01 Published:2012-08-21

Abstract:  The Yellow River tunnel, located at 7 degree seismic region, is deeply buried in the reach where the swing of the riverbed is larger and siltation-erosion variation is severe. The tunnel is a discontinuously flexible structure composed of several hundreds rings. The key technique problem in the feasible scheme is the longitudinal deformation caused by erosion-siltation change and earthquake load. So the 3-D nonlinear finite element program is developed to analyze the longitudinal deformation, crack opening, dislocation etc.. According to the characteristics of the large scale model and many contact interfaces , several approaches are adopted to control calculation scale and to ensure calculation precision, including rapid solution algorithm for the equations. The results show that the crack opening, the dislocation displacement, the bolt stress of span joints, and the concrete stress are all in the design permission range, and can satisfy the design requirement.

Key words: Yellow River Tunnel  , longitudinal deformation  , contact nonlinearity  ,   3-D finite element

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