Dynamic response of concrete gravity dams including dam–water–foundation interaction

Valliappan, S.; Zhao, Chongbin

doi:10.1002/nag.1610160202

Cited by 36 publications

(7 citation statements)

References 16 publications

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“…Figure 3 compares the results calculated by FEM‐SBFEM with results available in the literature 39,40 for different loading conditions. Figures 3A and 3B represent the real and imaginary parts of the vertical and horizontal compliances (

C_{V V}

and

C_{H H}

), respectively.…”

Section: Verificationmentioning

confidence: 99%

Computation of amplification functions of earth dam‐flexible canyon systems by the hybrid FEM‐SBFEM technique

Yaseri

Konrad

2021

Earthq Engng Struct Dyn

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A dam's responses can be amplified by the geometry and flexibility of its surrounding canyon. To modeling a canyon as an elastic unbounded domain, the radiation damping condition should be satisfied, and in this regard, the Scaled Boundary Finite Element Method (SBFEM) is a powerful tool. In this article, a substructure method was used to combine the standard Finite Element Method (FEM) with the SBFEM, resulting in the hybrid FEM‐SBFEM technique. This hybrid technique treats an earth dam by using FEM and a corresponding elastic unbounded canyon by SBFEM. The proposed approach was verified by data available in the literature. The seismic response of an earth dam‐flexible canyon system was investigated by employing a 3D FEM‐SBFEM method. Several amplification functions corresponding to different canyon conditions were obtained by applying a uniform displacement for the canyon boundary, and a comprehensive study was performed to examine the effects of canyon geometry and flexibility on the steady‐state response of the dam, as these two effects influenced the amplification functions. While the flexibility of the canyon significantly affects the maximum amplification function value for a dam, this value does not change for earth dams in canyons with different shapes but the same length. In addition, the lateral response of earth dams in the time domain was computed in order to analyze the aforementioned effects under an actual earthquake. The proposed amplification functions were used to compare the recorded response spectra of the El Infiernillo dam under the two earthquakes in 1966 with the calculated amplification function, and a reasonable agreement was observed between them.

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C_{V V}

and

C_{H H}

), respectively.…”

Section: Verificationmentioning

confidence: 99%

Computation of amplification functions of earth dam‐flexible canyon systems by the hybrid FEM‐SBFEM technique

Yaseri

Konrad

2021

Earthq Engng Struct Dyn

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“…Valliappan and Zhao [20] studied the dynamic response of concrete gravity dams including dam-water-foundation interaction. The physical and mechanical properties of the sediment at the bottom of the reservoir were also included in the analysis.…”

Section: Dynamic Solid-fluid Interactionmentioning

confidence: 99%

Computational mechanics applied to interaction problems

Valliappan

2004

Numerical Meth Engineering

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SUMMARYThis paper presents a general discussion on the application of computational mechanics concepts to solve engineering problems involving interaction effects between different media-for example, structure-soil/rock interaction and/or different phases such as solid-fluid interaction. The discussion includes illustrations based on numerical analyses of such problems using coupled finite element and boundary element, coupled finite element and infinite element methods. A few of the other mechanics concepts such as damage mechanics and optimization are also included in the discussion.

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“…For the boundary conditions in a numerical model, it is also noted that the dynamic infinite element [24,25] is an efficient and effective representation for the far field in an elastic wave propagation problem in an infinite medium. The coupled method of finite element and dynamic infinite element has been used to solve many wave propagation problems in engineering field [26][27][28][29].…”

Section: Udec Modelmentioning

confidence: 99%

A numerical study on 2-D compressive wave propagation in rock masses with a set of joints along the radial direction normal to the joints

Lei

Hefny

Yan

et al. 2007

Computers and Geotechnics

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Dynamic response of concrete gravity dams including dam–water–foundation interaction

Cited by 36 publications

References 16 publications

Computation of amplification functions of earth dam‐flexible canyon systems by the hybrid FEM‐SBFEM technique

Computation of amplification functions of earth dam‐flexible canyon systems by the hybrid FEM‐SBFEM technique

Computational mechanics applied to interaction problems

A numerical study on 2-D compressive wave propagation in rock masses with a set of joints along the radial direction normal to the joints

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