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- W2361116680 abstract "There is certain fracture process zone in front of macro crack in concrete structure.Considering its impact,critical equivalent crack length of instable expansion is no longer initial crack length a0,but the equivalent critical crack length ac corresponding to the maximum load,that is ac=a0+Δae,in which Δae is equivalent crack length of fracture process zone.Damage mechanics considers that the whole process of concrete from beginning of force action to final fracture is a process of formation,accumulation and development of the damage.In calculating equivalent crack length of fracture process zone,the influence of concrete′s initial damage and σ-e curve′s upward segment on calculated results should be conidered.By use of grey theory,this paper calculates initial damage D0 and damage threshold Df of specimens in wedge-splitting experiment.Based on virtual crack model principle and damage mechanics theory,the concret′s wedge-splitting specimen with initial crack a0 was studied and the equivalent crack length Δae in fracture process zone and corresponding range of damage degree were deduced." @default.
- W2361116680 created "2016-06-24" @default.
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- W2361116680 date "2013-01-01" @default.
- W2361116680 modified "2023-09-28" @default.
- W2361116680 title "Calculation of Equivalent Crack Length of Concrete Fracture Process Zone by Damage Mechanics" @default.
- W2361116680 hasPublicationYear "2013" @default.
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