Dynamic Analysis of Concrete Gravity Dams due to Nonuniform Translation and Rotational Components of Earthquake Considering Reservoir interaction

Document Type : Research Article

Authors

1 Phd candidate, Department of Civil Engineering, Noshirvani University of technology, Babol, Iran

2 Associate professor, Department of Civil Engineering, Noshirvani University of technology, Babol, Iran

Abstract

The main purpose of this paper is presentation of proper finite element formulation for dynamic analysis of concrete gravity dams under nonuniform translational and rotational components of earthquake considering dam- reservoir interaction. Time delay of travelling waves is considered to generate the nonuniform ground motion and the rocking component of earthquake has been obtained using the corresponding translational components based on classical elasticity and elastic wave propagation theories in term of wave frequency functions. The translation and rocking components of ground motion are applied to support points of dam-reservoir bottom and analyses have done using finite element method base on Lagrangian-Lagrangian approach. Results show that the rocking component and time delay of travelling translation waves can be effect considerably on linear dynamic response of concrete gravity dams in some cases.

Keywords


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