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基于WEIBULL分布冻融循环下喷射混凝土的损伤分析

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为研究喷射混凝土在冻融循环及单轴受压作用下的损伤分析,依据混凝土损伤力学和热力学理论,同时基于双参数WEIBULL分布概率函数和Lemaitre应变等效原理,建立喷射混凝土在冻融循环作用和单轴受压作用下的损伤本构模型,对36块喷射混凝土试件的冻融循环试验和单轴压缩试验的结果进行分析,讨论各参数对材料的应力应变影响规律,并验证模型的合理性与适用性.
Damage analysis of sprayed concrete under freeze-thaw cycles based on Weibull distribution
In order to study the damage analysis of sprayed concrete under freeze-thaw cycles and uniax-ial compression,a damage constitutive model of sprayed concrete under freeze-thaw cycles and uni-axial compression was established based on the theory of concrete damage mechanics and thermo-dynamics,as well as the two-parameter WEIBULL distribution probability function and Lemaitre strain equivalence principle.The results of freeze-thaw cycles and uniaxial compression tests on 36 sprayed concrete specimens were analyzed,Discuss the influence of various parameters on the stress-strain behavior of materials,and verify the rationality and applicability of the model.

Sprayed concreteConstitutive modeDamage analysisMoisture content

霍昊、王海龙、盛俊博

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河北建筑工程,河北张家口 075000

河北省土木工程诊断、改造与抗灾重点实验室,河北张家口 075000

喷射混凝土 本构模型 损伤分析 含水率

2024

河北建筑工程学院学报
河北建筑工程学院

河北建筑工程学院学报

影响因子:0.502
ISSN:1008-4185
年,卷(期):2024.42(1)
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