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Energy Evolution Law of Concrete Under Dynamic Triaxial Compression
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Yu LEI, Gang PENG, Qian-feng WANG, Yuan-yuan XU
Water Resources and Power | 2023, 41(4) : 151 - 154
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Water Resources and Power | 2023, 41(4): 151-154
WATER CONSERVANCY AND HYDROPOWER ENGINEERING
Energy Evolution Law of Concrete Under Dynamic Triaxial Compression
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Yu LEI, Gang PENG, Qian-feng WANG, Yuan-yuan XU
Affiliations
  • College of Civil Engineering and Architecture, China Three Gorges University, Yichang 443002, China
Published: 2023-04-25 doi: 10.20040/j.cnki.1000-7709.2023.20221314
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A static dynamic triaxial instrument was used to carry out concrete triaxial dynamic mechanical tests by setting different strain rates (10-5/s, 10-4/s, 10-3/s, 10-2/s) and different lateral confining pressures (4.5 MPa, 6.0 MPa, 9.0 MPa and 12 MPa). The evolution law of the total energy density, elastic strain energy density and dissipated energy density of concrete with axial strain under dynamic triaxial compression was studied. The influence of lateral confining pressure and strain rate on the energy evolution law of concrete was analyzed. The results show that with the increase of axial deformation, the total energy density and dissipated energy density of concrete increase nonlinearly, and the elastic strain energy density first increases and then decreases. The increase of strain rate and lateral confining pressure improves the specific energy storage limit of concrete, and the energy storage limit of concrete shows a strong rate sensitivity; The relationship of energy storage limit and the lateral confining pressure is approximately linear; With increase of the lateral confining pressure, the rate sensitivity of the concrete energy storage limit shows a decreasing trend.

concrete  /  triaxial compression  /  strain rate  /  energy evolution
Yu LEI, Gang PENG, Qian-feng WANG, Yuan-yuan XU. Energy Evolution Law of Concrete Under Dynamic Triaxial Compression[J]. Water Resources and Power, 2023 , 41 (4) : 151 -154 . DOI: 10.20040/j.cnki.1000-7709.2023.20221314
Year 2023 volume 41 Issue 4
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Article Info
doi: 10.20040/j.cnki.1000-7709.2023.20221314
  • Receive Date:2022-06-24
  • Online Date:2026-01-27
  • Published:2023-04-25
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  • Received:2022-06-24
  • Revised:2022-08-04
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    College of Civil Engineering and Architecture, China Three Gorges University, Yichang 443002, 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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