ADVANCES IN FRACTURE CRITERIA OF MIXED MODEL FRACTURE IN CONCRETE
混凝土Ⅰ-Ⅱ复合型裂纹断裂准则研究方法概述

Mixed-model fracture is a prevailing phenomena in concrete. At present, there are two main approaches in describing the fracture behavior of concrete structures: One using stress intensity factor(SIF) as the main fracture parameter, and the other being energy based. Theoretically, these two methods should be consistent with each other. The basic assumptions, standards and application ranges of different fracture criteria are discussed. Furthermore, by comparing results in tests, the merits and demerits of different fracture criteria are discussed.