›› 2010, Vol. 31 ›› Issue (5): 1592-1596.

• Numerical Analysis • Previous Articles     Next Articles

Back analysis of elastic parameters and stability evaluation of Ming Tombs Reservoir dam

WANG Zhi-yin 1, YUAN Hong-hu1, ZHANG Qi-wei2, GONG Xiao-ming2   

  1. 1.Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, China University of Petroleum, Beijing 102249, China; 2.Beijing Institute of Hydraulic Engineering Planning, Design and Research, Beijing 100044, China
  • Received:2009-01-07 Online:2010-05-10 Published:2010-05-24

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Abstract:

In order to know the mechanical effect and the stability of the Ming Tombs Reservoir dam influenced by the dynamic loading and the environment condition during the Olympic game, the optimum elastic modulus scheme of the inclined clay wall, gravelly coarse sand and sandy cushion layer, which are the three main soil layers of the dam, is back analyzed by utilizing the orthogonal experiment design and based on in-situ measured deformation from the load response of the Olympic construction, including the spectator stand and the temporary facilities. The numerical simulations of the processes of initial Olympic construction and the dynamic loading-unloading cycles during the Olympic game are carried out by utilizing the obtained optimum parameters. The results show that the maximum settlement produced in the dam during the game is about 7.4 mm; and the maximum horizontal displacement is not over 1 mm; and the dam is safe and stable during the game and after the game; and the shear damage and tensile cracks do not appear. The monitored deformations during the game are close to the results of the numerical simulations, which indicates that the numerical simulations based on the parameters obtained by back analysis of in- situ measured displacements can make the scientific prediction and the quantitative evaluation for dams.

Key words: Olympic construction load, Ming Tombs Reservoir dam, back analysis, stability evaluation

CLC Number: 

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