Seismic behavior of concrete gravity dams with penetrated cracks and equivalent impact damping

2007 ◽  
Vol 29 (3) ◽  
pp. 336-345 ◽  
Author(s):  
Xueye Zhu ◽  
O.A. Pekau
Keyword(s):  
Seismic Behavior ◽  
Gravity Dams ◽  
Concrete Gravity Dams ◽  
Impact Damping

Seismic behavior of concrete gravity dams

2016 ◽  
Vol 1 (2) ◽  
pp. 195-206 ◽  
Author(s):  
Jiji Anna Varughese ◽  
Sreelakshmi Nikithan
Keyword(s):  
Seismic Behavior ◽  
Gravity Dams ◽  
Concrete Gravity Dams

scholarly journals Seismic Performance Evaluation of Concrete Gravity Dams with Penetrated Cracks Considering Fluid–Structure Interaction

2018 ◽  
Vol 8 (1) ◽  
pp. 2546-2554
Author(s):  
A. Behshad ◽  
M. R. Shekari
Keyword(s):  
Seismic Behavior ◽  
Hybrid Approach ◽  
Nonlinear Behavior ◽  
Computer Code ◽  
Liquid Region ◽  
Gravity Dams ◽  
Dam Reservoir ◽  
Seismic Performance Evaluation ◽  
Concrete Gravity Dams ◽  
Added Masses

In this paper, a comprehensive study on the seismic behavior of fractured concrete gravity dams during ground shakings is carried out considering dam–reservoir interaction effects. To gain the seismic behavior of the whole system, finite and boundary elements are employed to model the liquid region and the cracked structure, respectively. Formulation and different computational aspects of the suggested staggered hybrid approach are thoroughly argued. A computer code was developed in order to discuss the presented hybrid BE–DE technique and comparisons are made between the obtained results and those reported in the literature. To gain this goal, several problems of seismic excitations in frequency- and time-domains are presented employing the proposed approach, showing that the present results agree well with the results from other numerical procedures. The cracked Koyna Dam is scrutinized, considering the dynamic interaction between dam and reservoir with focus on the nonlinear behavior due to its top profile crack. The developed numerical model is rigorously validated by extensive comparisons with available results in the literature in which the dam–reservoir interaction were simplified by added masses. It can be concluded that there is significant disparity between the overturning and sliding response schemes of the nonlinear analysis and those of added mass technique.

Geometric Configuration Effects on Nonlinear Seismic Behavior of Concrete Gravity Dam

2018 ◽  
Vol 12 (01) ◽  
pp. 1850003 ◽  
Author(s):  
Md. Imteyaz Ansari ◽  
Mohd Saqib ◽  
Pankaj Agarwal
Keyword(s):  
Nonlinear Dynamic ◽  
Seismic Behavior ◽  
Seismic Vulnerability ◽  
Fragility Curves ◽  
Geometric Configuration ◽  
Gravity Dam ◽  
Concrete Gravity Dam ◽  
Gravity Dams ◽  
Concrete Gravity Dams ◽  
Dynamic Analyses

The effects of geometric configuration on the seismic vulnerability of concrete gravity dam are discussed in the present study. The seismic vulnerability of concrete gravity dams has been represented through fragility curves obtained through incremental dynamic analyses by considering their nonlinear dynamic behavior. Five different geometries of concrete gravity dams are considered and fragility analyses are carried out on the basis of Incremental Dynamic Analyses. The effect of smoothening of re-entrant corners in the geometry of high concrete gravity dam is also presented as a possible solution.

Application of Digital Simulation Software ANSYS in Rolling Concrete Dams Construction Technology

2011 ◽  
Vol 704-705 ◽  
pp. 352-357
Author(s):  
Gui Xiang Zeng
Keyword(s):  
Digital Simulation ◽  
Simulation Software ◽  
Construction Technology ◽  
Dynamic Features ◽  
Concrete Gravity Dam ◽  
Gravity Dams ◽  
Concrete Dam ◽  
Concrete Gravity Dams ◽  
Xinjiang Autonomous Region ◽  
Important Significance

Taking a large hydropower station in Xinjiang Autonomous Region as an example, and based on the limited unit method, the structure and seism forces features and response rules of rolling concrete gravity dam under different construction conditions were studied. The purpose for the paper is to understand dam working status under the different design conditions, and to evaluate anti-earthquake safety capability. It is proved that the present findings should play an important significance in the development of rolling concrete dam construction technology. Key words: Rolling Concrete Gravity Dams, Limited Unit Methods, Static Force Analysis, Dynamic Features.

Seismic Analysis of Concrete Gravity Dams Considering Foundation Mass Effect

2018 ◽  
Vol 22 (12) ◽  
pp. 4988-4996 ◽  
Author(s):  
Erfan Asghari ◽  
Reza Taghipour ◽  
Mohsen Bozorgnasab ◽  
Mojtaba Moosavi
Keyword(s):  
Seismic Analysis ◽  
Mass Effect ◽  
Gravity Dams ◽  
Concrete Gravity Dams
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