摘要
本文在对大型紧凑拉伸试件断裂实验和光弹性贴片法观察结果进行分析的基础上,寻找到适合于裂缝扩展问题的K_R阻力曲线断裂准则,提出了与此相等价且更为简单实用的双K断裂准则。
On the basis of tests by use of laser speckle photography,photoelastic coat-ing and strain gauge technique and large size compact tension specimens. Itwas found that a K_R-resistance curve can be taken as a fracture criterion inthe analysis of crack propagation in concrete structures. As a result, a doub-le-K fracture criterion equivalent to the K-resistance curve, but moresimpler and practical is proposed in this paper. K_(IC)~S is taken as a fractureparameter to describe the beginning of the main crack in the concrete struc-ture and K_(rc)~r is taken to describe the unstable fracture in the structure.
出处
《土木工程学报》
EI
CSCD
北大核心
1992年第2期32-38,共7页
China Civil Engineering Journal
基金
水利水电科学基金
