Volume 12, Issue 2 And A (Transaction A: Civil Engineering, June 2014)
IJCE 2014, 12(2 And A): 121-138 |
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Hariri Ardebili M A, Mirzabozorg H, Kianoush R. Comparative study of endurance time and time history methods in seismic analysis of high arch dams . IJCE 2014; 12 (2) :121-138
URL: http://ijce.iust.ac.ir/article-1-756-en.html
URL: http://ijce.iust.ac.ir/article-1-756-en.html
Abstract: (7179 Views)
In the present study, the application of Endurance Time Analysis (ETA) method is investigated on seismic analysis of a high
arch dam. In this method the coupled system is excited using the predesigned intensifying acceleration functions instead of the
real ground motions. Finite element model of an arch dam considering the dam-rock-water interaction effects was developed
in which the concrete and rock were assumed to have linear elastic behavior. The effect of the large displacement in dam body
was considered in numerical model using co-rotational approach. The coupled system was analyzed by conventional Time
History Analysis (THA) method in various seismic performance levels and the results were compared with those obtained from
ETA at the equivalent target time. It was found that ETA method provides the close results to THA with acceptable accuracy
while it reduces the total time of the analyses considerably.
Keywords: Endurance time analysis, Dam-rock-water interaction, Equivalent target time, Geometric nonlinearity
Type of Study: Research Paper |
Subject:
Structure-Earthquake
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