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Investigate probability of damage of Earth dam under Near-field and Far –field earthquake : Case study Gotvand earth dam
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Farhoud Kalateh   , Sara Irani |
| University of Tabriz , f.kalateh@gmail.com |
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Abstract: (879 Views) |
| The main goal of preset research is investigate the effects of vertical component of Near-Fault and Far-Field earthquake records on the probability of overtopping induced damage of earth dam due to the reduction of freeboard due to the settlement of dam crest. In this respect 12 different earthquake record are selected. Nonlinear dynamic analysis of earth dam is implemented with FLAC 3D using Finn model that relates the increment of volume decrease per cycle of shear strain to the cyclic shear strain amplitude for considering the pore pressure build-up during seismic loading. Obtained results show that the response of dam for near-fault earthquakes considerably is larger than far-field records. Applying vertical component of earthquakes in the dynamic analysis caused the horizontal maximum displacement of dam's crest increase 5.58% for near-fault records and 2.96 % for far-field records and also maximum settlement for dam's crest increase 31.69 % for near-fault records and 73.65 % for far-field records with including vertical component of records in the dynamic analysis, Also can be get form obtained results the damage probability of dam with considering vertical component of earthquakes is increase 249% for near-fault records and increase 2419% for far-field records. |
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| Keywords: Earth dam, nonlinear dynamic analysis, finite difference method, Flac3D, vertical component of earthquake, Damage probability |
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Full-Text [PDF 2543 kb]
(683 Downloads)
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Type of Study: Research |
Subject:
ژئوتکنیک و مهندسی زلزله
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