Three-Dimensional Damage Analysis of Concrete Surrounding the Spiral Case in the Nuozhadu Hydropower Station

Ze Li; Li Xiang Zhang

doi:10.4028/www.scientific.net/AMR.393-395.1048

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 393-395Three-Dimensional Damage Analysis of Concrete...

Three-Dimensional Damage Analysis of Concrete Surrounding the Spiral Case in the Nuozhadu Hydropower Station

Abstract:

Studies have shown that the internal pressure of the spiral case could cause damage of the surrounding concrete, and the damage range and level are possible to grow with the repeated action of water hammer pressure. The security of spiral case structure may be adversely affected by damage of the surrounding concrete. In this paper, the case study of a spiral case which located in Nuozhadu hydropower station in Yunnan Province is presented. In order to analyze the damage effect of surrounding concrete under the repeated maximal water hammer pressure, a three-dimensional finite element model is established by ABAQUS software. In calculation, the contact elements are used to simulate the feature of frictional contact between steel liner and surrounding concrete, and the concrete damage plasticity constitutive model is adopted to describe the tensile characteristic of concrete. At last, according to the results of simulation, the damage range and level are investigated.

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Periodical:

Advanced Materials Research (Volumes 393-395)

Pages:

1048-1053

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.393-395.1048

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Online since:

November 2011

Authors:

Ze Li, Li Xiang Zhang

Keywords:

Concrete, Damage, Nonlinear FEM, Repeated Load, Spiral Case

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