Two-dimensional dam break analyses of Berdan dam

Ünal, Çağla Irmak
Dam break analyses of Berdan Dam were performed to determine the potential risk areas of floodplain and to help the preparation of emergency action plans. Digital elevation model created from bathymetric maps, flow hydrograph obtained for catastrophic condition, and sub-regions classified by land cover maps were integrated into HEC-RAS model. The reservoir of Berdan Dam and two-dimensional flow area was created on GIS-based geometric data which was converted from the digital elevation model to a triangulated irregular network. Breach parameters were calculated according to the selected dam breach mechanism. When all hydraulic and hydrological parameters were specified depending on variables and selected dam breach mechanism, simulations were run under piping and overtopping scenarios. Finally, the flood inundation maps were visualized on the digital elevation model with the help of RAS-Mapper in terms of depth, velocity, water surface elevation, and flood arrival time.


Numerical simulation of the Kirazlıköprü dam failure on the Gökırmak river
Karakaya, Koray; Bozkuş, Zafer; Department of Civil Engineering (2005)
Numerical dam break analyses of Kirazliköprü Dam are performed under various hydraulic scenarios. Kirazliköprü Dam is located on the Gökirmak River near the city of Bartin. The objective of these analyses is to investigate adverse effects of such dam break failure on the regions downstream of the dam. The numerical model used in the simulations is FLDWAV, which is developed by the National Weather Service (NWS) in the United States. It appears that most adversely effected regions are those that are closest ...
Performance of concrete gravity dams under earthquake effects
Soysal, Berat Feyza; Arıcı, Yalın; Department of Civil Engineering (2014)
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 th...
Pre-event dam failure analyses for emergency management
Bozkuş, Zafer (2001-12-01)
Simultaneous dam-break analyses of two dams, namely the Nilüfer and Doǧanci dams, due to a breach in their bodies, were performed under various hydraulic conditions. Both of the dams are located in the same river branch of the Nilufer Basin in the province of Bursa in Turkey. The main purpose of the study was to see the negative effects of such failure on the city of Bursa, which is located downstream of the dams, as well as to make available the results of the study to the relevant public officials for the...
Ground motion scaling for the prediction of the seismic response of concrete gravity dams
Duygu, Mustafa Berk; Arıcı, Yalın; Department of Civil Engineering (2014)
Designing dams for seismic safety gains importance as the number of dams are increasing as a result of increasing need in water storage and hydropower. To define a structure’s seismic safety, scaling of accelerograms should be considered as one of the most crucial elements. Appropriate scaling of ground motion records is required to better estimate the linear and nonlinear structural response of a structure. Although, in literature, there exist numerous methods dealing with this issue, it is required to det...
Seismic testing of a scaled roller-compacted-concrete gravity dam
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...
Citation Formats
Ç. I. Ünal, “Two-dimensional dam break analyses of Berdan dam,” Thesis (M.S.) -- Graduate School of Natural and Applied Sciences. Civil Engineering., Middle East Technical University, 2019.