不同扩展准则下混凝土断裂全过程分析

Low Temperature Architecture Technology(2014)

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Abstract
分别采用基于双K断裂模型和虚拟裂缝模型的裂缝扩展准则,计算了混凝土三点弯曲梁试件的荷载-裂缝口张开位移曲线(P-CMOD曲线),并与试验结果进行了对比,结果表明:基于两种模型的裂缝扩展准则的计算结果与试验结果差别不大,但采用基于双K断裂模型的裂缝扩展准则计算的结果与试验结果更为接近.
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