›› 2010, Vol. 31 ›› Issue (9): 2861-2868.

• Geotechnical Engineering • Previous Articles     Next Articles

Analysis of stress and deformation of Jinping I High Arch Dam after foundation reinforcement

HU Zhu-xiu1，ZHANG Jian-hai1，ZHOU Zhong2，RAO Hong-ling2   

  1. 1. State Key Laboratory of Hydraulics and Mountainous River Engineering, School of Water Resources and Hydro-power, Sichuan University, Chengdu 610065, China; 2. Chengdu Hydroelectric Investigation and Design Institute, CHECC, Chengdu 610072, China
  • Received:2009-05-27 Online:2010-09-10 Published:2010-09-16

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Abstract:

The complex geological conditions in the site of Jinping I Arch Dam made its reinforcement measures a huge project ,which mainly includes the concrete seating replacement ,shearing resistant adit, with the fault f13, f14 in the right bank and fault f5 、f8 and lamprophyre veins in the left bank treated with concrete lattice replacement. By employing nonlinear finite element analysis, this article gives computing results and detailed discusses on the dam stress and deformation characteristics of Jinping I Arch Dam under several operation conditions after the dam foundation reinforced. The dam stress distribution and deformation are also discussed by way of strength reserve method and the water gravity overload method. The results show that during the inpounding period, the overall characteristics of deformation and stress distribution of the dam have been significantly improved; the tensile stresses in the heel of dam are decreased after reinforcement; and the dam has enough global stability storage to completely meet the design requirements. Thus the necessity of the concrete seating replacement is afirmed.

Key words: finite element method, high arch dam, dam stress and deformation, Jinping I Hydropower Staion

CLC Number: 

  • TB 115
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