摘要
将断裂力学运用于混凝土的裂缝分析,给出了混凝土的断裂准则,分析了该准则的缺陷,将断裂力学准则与强度理论准则相结合,提出了一种等效断裂变形的模型,根据该模型,推导出了带裂缝的混凝土体的弹塑性本构关系。
Fracture mechanics is adopted in analyzing the concrete cracks. The fracture criterion of concrete is given and in addition, the limitations of this criterion are analyzed. To overcome the limitations, the paper combines the criterion of fracture mechanics with the criterion of strength theory, presents a model of equivalent fracture distortion and, based on the model, derives the stress-strain relationship of the concrete with cracks.
出处
《空军工程大学学报（自然科学版）》
CSCD
2004年第2期81-84,共4页
Journal of Air Force Engineering University(Natural Science Edition)
基金
总后科研基金资助(HX00502)
关键词
断裂力学
断裂准则
等效断裂变形
本构关系
fracture mechanics
fracture criterion
equivalent fracture distortion
stress-strain relationship
