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基于裂缝扩展准则的混凝土重力坝裂缝扩展全过程数值分析

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Indexed by: Journal Article

Date of Publication: 2009-09-15

Journal: 建筑科学与工程学报

Included Journals: ISTIC

Volume: 26

Issue: 3

Page Number: 49-54

ISSN: 1673-2049

Key Words: 裂缝扩展准则;混凝土重力坝;数值分析;虚拟裂缝模型;抗拉强度

Abstract: 将裂缝扩展准则应用于混凝土重力坝裂缝扩展全过程分析,结合虚拟裂缝模型计算了经典混凝土重力坝模型的断裂特性,并与其他数值方法进行了对比.结果表明:利用该数值方法得到的混凝土重力坝模型的外荷载-裂缝口张开位移曲线及裂缝扩展路径与试验结果均吻合良好;当给定了混凝土材料的起裂断裂韧度、断裂能、抗拉强度等参数后,即可采用该数值方法对混凝土重力坝裂缝扩展全过程进行分析.

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