混凝土断裂能产生尺寸效应的原因探讨

英文篇名：Research on the cause of size effect for fracture energy of concrete
中文刊名：水利水电科技进展
英文刊名：Advances in Science and Technology of Water Resources
作者：王宝庭 ; 张廷毅 ; 高丹盈
英文作者：WANG Bao-ting ; ZHANG Ting-yi ; GAO Dan-ying(Research Center of New Style Building Material & Structure ; Zhenzhou University ; Zhenzhou 450002 ; China)
中文关键词：混凝土断裂能 ; 尺寸效应 ; 非弹性体 ; 能量释放率
英文关键词：fracture energy of concrete ; size effect ; inelastic body ; energy release rate
出版日期：2008-12-20
机构：郑州大学新型建材与结构研究中心;
年：2008
期：06
出版单位：水利水电科技进展

摘要

总结了关于混凝土断裂能尺寸效应产生原因的各种观点,并对这些观点进行简要评述。对RILEM的断裂能计算公式和Wecharatana提出的断裂能测算方法进行了详细研究,分析了断裂过程区演变对断裂能计算结果的影响,认为混凝土断裂能产生尺寸效应的原因之一是没有考虑混凝土主裂纹产生之前消耗的能量,并用实验对此观点进行了验证。
Various opinions about the size effect on fracture energy of concrete are summed up and briefly analyzed.The influence of the evolution of the fracture process zone on the computed result of the fracture energy is analyzed.Wecharatana's fracture energy calculation method is discussed.One of the reasons for the size effect is that energy consumption before the main cracks initiate is not taken into consideration,which is demonstrated by experimental results in this paper.

引文

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