摘要
采用最大尺寸为１２００ｍｍ×１２００ｍｍ×２００ｍｍ的楔入劈拉试件研究了试件高度对砼断裂能的影响．结果表明，断裂能ＧＦ在一定范围内存在尺寸效应，但当试件高度ｈ＞８００ｍｍ时，所测得的ＧＦ值与试件高度无关．
The wedge splitting test specimens whose maximum size is 1 200 mm×1 200 mm×200 mm are used to study the influences of the specimen height on fracture energy of concrete. The test results show that the fracture energy of concrete G F is dependent on the specimen height within definite ranges. But when the specimen height h is larger than 800 mm, the measured fracture energy is independent of the specimen height. The result has important significance for the cracking calculation of large concrete structures.
出处
《大连理工大学学报》
CAS
CSCD
北大核心
1996年第6期782-784,共3页
Journal of Dalian University of Technology
关键词
混凝土
断裂
断裂能
尺寸效应
concretes
fractures/fracture energy
size effect
