›› 2009, Vol. 30 ›› Issue (4): 909-914.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experimental study of dynamic properties of materials of a faced rockfill dam

YU Yu-zhen，LIU Zhi-long，SUN Xun，ZHANG Bing-yin   

  1. State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China
  • Received:2007-09-06 Online:2009-04-10 Published:2011-01-30

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Abstract:

The main dam of the upper reservoir of a pumped storage power plant is an asphalt concrete faced rockfill dam located in strong earthquake region; so it is necessary to investigate the dynamic properties of the rockfill and foundation materials. The dynamic moduli, damping ratios and residual deformations of the main materials have been measured by using the large scale and multi-purpose static-dynamic triaxial test apparatus. The experimental results show that the dynamic moduli of soft rockfill and alluvium are somewhat less than those of ordinary rockfill; however, their dynamic stress-strain relationships and residual deformations may be still described by the modified nonlinear viscoelastic dynamic constitutive models and empirical formulae, respectively.

Key words: faced rockfill dam, rockfill material, dynamic deformation, nonlinear viscoelastic model, residual deformation

CLC Number: 

  • TU 443
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