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Research on dynamic damage of gravity dam considering concrete strength inhomogeneity
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Tianxiao MA1, Liaojun ZHANG2, Dejian SHEN3, Weiqiang WANG2
Earthquake Engineering and Engineering Dynamics | 2024, 44(1) : 128 - 136
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Earthquake Engineering and Engineering Dynamics | 2024, 44(1): 128-136
Research on dynamic damage of gravity dam considering concrete strength inhomogeneity
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Tianxiao MA1, Liaojun ZHANG2, Dejian SHEN3, Weiqiang WANG2
Affiliations
  • 1.College of Water Conservancy, Shenyang Agricultural University, Shenyang 110866, China
  • 2.College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China
  • 3.College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China
doi: 10.13197/j.eeed.2024.0112
Outline
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The mass concrete used in gravity dam is easy to lead to inhomogeneity of strength due to its inherent characteristics, construction quality and other reasons. In the current seismic analysis of concrete dams, concrete is generally regarded as a material with uniform strength distribution, but there are few studies on the influence of strength inhomogeneity on dam dynamic damage. Based on the plastic damage theory of concrete and the probability distribution model of Weibull, Python language is used to redevelop ABAQUS. On the premise of considering the plastic damage of concrete, the influence of random inhomogeneity distribution of concrete strength on the damage of gravity dam body and bedrock is studied. The dynamic damage of dam and bedrock, the interaction between dam and reservoir water, and the radiation damping of infinite foundation are comprehensively considered in calculation. The dynamic responses of dam and bedrock after earthquakes, such as damage area distribution, damage area ratio and damage dissipation energy, are compared and analyzed. The influences of inhomogeneity concrete strength on dam and bedrock seismic damage are revealed. The research results can provide reference for the design and construction of gravity dam.

gravity dam  /  Weibull distribution  /  material inhomogeneity  /  dynamic damage
Tianxiao MA, Liaojun ZHANG, Dejian SHEN, Weiqiang WANG. Research on dynamic damage of gravity dam considering concrete strength inhomogeneity[J]. Earthquake Engineering and Engineering Dynamics, 2024 , 44 (1) : 128 -136 . DOI: 10.13197/j.eeed.2024.0112
Year 2024 volume 44 Issue 1
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doi: 10.13197/j.eeed.2024.0112
  • Receive Date:2022-10-25
  • Online Date:2026-03-30
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  • Received:2022-10-25
  • Revised:2023-04-28
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Affiliations
    1.College of Water Conservancy, Shenyang Agricultural University, Shenyang 110866, China
    2.College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China
    3.College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China
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表12种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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