Performance of concrete gravity dams under earthquake effects

Soysal, Berat Feyza
Concerns about the seismic safety of gravity dams have increased with the construction of numerous new dams in the developing world as well as the need for the evaluation of existing dam stock in the developed countries. The common procedure for the design of concrete gravity dams has been linear analyses: there is scant experience on the design of such systems using nonlinear analyses as the post-linear behavior and performance limits of gravity dam monoliths are not well known. This study is focused on the investigation of the behavior of a concrete gravity dam monolith using the incremental dynamic analysis (IDA) procedure with the goal of determining the development of damage on the monolith and the corresponding cracking patterns. The constitutive model used was first calibrated to experimental data in order to verify the ability of the model to simulate the fracture in this material. IDA was then conducted using 21 different ground motions in order to assess the state of damage on the monolith for increasing intensity measures (IM). The results show that in lieu of spectral acceleration, velocity based IMs are more effective in determining the damage process on the monolith. A simple equation for the prediction of the damage development was proposed based on the velocity characteristics of the ground motion. Finally, the results of the IDA were compared to the static pushover analysis results in order to evaluate the scope of possible use of such analyses for determining the performance levels of dams.


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Seismic behavior of gravity dams has long been evaluated and predicted using a representative 2D monolith for the dam. Formulated for the gravity dams built in wide-canyons, the assumption is nevertheless utilized extensively for almost all concrete dams due to the established procedures in 2D space as well as the expected computational costs of building a three dimensional model. A significant number of roller compacted concrete dams are being designed based on these procedures regardless of the valley dim...
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Gharibdoust, Ali; Binici, Barış; Department of Civil Engineering (2016)
Within the last half-century, seismic response analysis of concrete gravity dams has been extensively studied. Studies reveal that two types of failure modes prevail in the form of dam body cracking or base slide. The literature lacks the conditions that clearly differentiate the two failure types. In this context a state of the art single degree of freedom pseudo-dynamic testing was developed to assess the gravity dam response on smooth foundation interface. Three different hazard levels of earthquake name...
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Aldemir, Alper; Binici, Barış; Department of Civil Engineering (2016)
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Seismic analysis of concrete gravity dams including damfoundation-reservoir interaction
Yücel, Ali Rıza; Binici, Barış; Department of Civil Engineering (2013)
The attractiveness of the hydroelectric power as a domestic, clean and renewable energy source increased with the rise of the energy demand within the last decade. In this context, concrete gravity dam construction gained a high momentum. Use of roller compacted concrete as a dam construction material became popular due to advantages such as reducing the construction duration and costs. Concrete gravity dams are special type of structures which requires an extensive care for their seismic analysis and desig...
Citation Formats
B. F. Soysal, “Performance of concrete gravity dams under earthquake effects,” M.S. - Master of Science, Middle East Technical University, 2014.