›› 2016, Vol. 37 ›› Issue (9): 2624-2630.doi: 10.16285/j.rsm.2016.09.026

• Geotechnical Engineering • Previous Articles     Next Articles

Numerical simulation of Mengdigou arch dam based on nonlinear finite elements

LIN Cong1, YANG Qiang1, WANG Hai-bo2, LI Ren-hong2   

  1. 1. State Key Laboratory of Hydroscience and Hydraulic Engineering, Tsinghua University, Beijing 100084, China; 2. Power China, Chengdu Engineering Corporation Limited, Chengdu, Sichuan 610072, China
  • Received:2016-02-13 Online:2016-09-12 Published:2018-06-09
  • Supported by:

    This work was supported by the National Program on Key Basic Research Project of China(2015CB057904), the National Natural Science Foundation of China(11572174) and the Program on State Key Laboratory of Hydroscience and Hydraulic Engineering(2016-KY-02).

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Abstract: Mengdigou Hydropower Station is the fifth cascade hydropower station in Yalong River’s middle reaches. Due to the maximum dam height of 200 m and complex geological conditions, it is of significant importance for engineering safety to ensure the dam’s good workability and global stability after impounding. Based on deformation reinforcement theory (DRT), a 3D finite element model of Mengdigou is built to analyze the behavior of the dam’s displacements, plastic zones extension and global stability under both normal and overloading conditions. The results show that the displacements and overloading capacity meet the stability requirement. The introduction of fillet significantly reduces the plastic complementary energy of both the dam and base, which is beneficial to the global stability. Two ways of replacement treatment for f4 fault are investigated. It turns out to be more favorable using shallow replacement together with grid replacement for the dam’s global stability.

Key words: Mengdigou arch dam, finite element analysis, global stability, deformation reinforcement theory

CLC Number: 

  • TV 223

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