Numerical simulation of damage in high arch dam due to earthquake |
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Authors: | Hong Zhong Gao Lin and Hongjun Li |
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Affiliation: | (1) School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian, 116024, China;(2) Department of Engineering Mechanics, Dalian University of Technology, Dalian, 116024, China |
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Abstract: | Based on the assumption that concrete is macroscopic homogeneous, the cracking evolution process and damage mode of high arch
dams are studied in consideration of the heterogeneity of concrete in mesoscale. The bilinear damage evolution model and the
damage evolution model expressed in power function with descending section are adopted to combine with the Mohr-Coulomb criterion
with tension cut-off to investigate the crack development and fracture mode of high arch dams under the action of an earthquake.
The analysis result of a high arch dam in China under design shows that cracks that take place in concrete are caused by excessive
tensile stress. The cracks initiate at the middle of the dam top and distribute at the upper half of the dam while the rest
of the parts remain intact. This conclusion agrees with the model test result.
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Translated from Shuili Xuebao, 2008, 39(7): 848–853 译自: 水利学报] |
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Keywords: | mesoscopic heterogeneity damage simulation in earthquakes arch dam |
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