水利水电科技进展2017，Vol.37Issue(4)：30-35,86,7.DOI:10.3880/j.issn.1006-7647.2017.04.006
单裂缝混凝土结构水力劈裂试验
Hydraulic fracturing test of concrete structures with single crack
摘要
Abstract
Two groups of hydraulic fracturing tests were carried out on concrete specimens of different strengths with a single initial crack under different stresses. The effects of stress state and loading pattern on the crack propagation process of concrete specimens were studied. The evolution law of water pressure within crack along the crack propagation path was analyzed, and the quantitative relation for the critical fracturing pressure prediction model of concrete specimens was obtained. Results show that damages induced by hydraulic fracturing occurred to the two groups of specimens under different stresses. Besides, the differences between the critical fracturing pressure and axial pressure of the two groups of specimens were less than the splitting strength of the specimens, and the development of the sharp cutting edge under water pressure lagged behind that of the dry crack.关键词
混凝土结构/水力劈裂/单裂缝/缝内水压/临界劈裂水压Key words
concrete structure/hydraulic fracturing/single crack/water pressure within crack/critical fracturing pressure分类
建筑与水利引用本文复制引用
甘磊,沈心哲,王瑞,刘泽涵..单裂缝混凝土结构水力劈裂试验[J].水利水电科技进展,2017,37(4):30-35,86,7.基金项目
国家自然科学基金(51609073) （51609073）
水利部土石坝破坏机理与防控技术重点实验开放基金(YK915007) （YK915007）
中央高校基本科研业务费专项(2014B11914) （2014B11914）
