›› 2009, Vol. 30 ›› Issue (S2): 312-0317.

• Geotechnical Engineering • Previous Articles     Next Articles

3-D static stress and displacement analysis of Gangqu river concrete faced rockfill dam

HU Zai-qiang, LI Hong-ru, SU Yong-jiang   

  1. Institute of Geotechnical Engineering, Xi’an University Technology, Xi’an 710048, China
  • Received:2009-07-18 Online:2009-08-10 Published:2011-06-21

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Abstract:

A 3-D finite element analysis by applying Duncan model is carried out to calculate stresses and deformations of the Gangqu River concrete faced rockfill dam. The effects of 3-D soft rock fillings on the behavior of the dam are discussed. The displacements and stresses of concrete slab and rock fillings as well as deformations of peripheral joints are calculated. The maximum settlement of the cross-section is found to be located at the downstream side with a value corresponding to 0.2 % of the dam height. The displacement of peripheral slab joints is small, less than 2.0 cm during reservoir impounding. The type of watertight and joint sealing material should be selected carefully. The effect of the 3-D characteristics of canyon shape on the behavior of CFRD is found to be significant. Numerical simulation results provide for reference in design and construction.

Key words: concrete-faced rockfill dam, peripheral slab joints, stress-strain, 3-D finite elements

CLC Number: 

  • TV 641
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