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本文研究了各种混凝土材料破坏准则的特性及相互关系,给出了多轴应力下适用于普通混凝土,钢纤维混凝土,轻骨料混凝土及钢纤维轻骨料混凝土的通用破坏准则.该破坏准则考虑了不同材料特性、钢纤维含量对空间破坏准则的影响,从而使不同混凝土材料破坏准则得到了统一.这是以前的研究工作所未曾涉及的.对于不同混凝土材料,本文给出的破坏准则与试验值吻合较好.本文建议的通用破坏准则为实现其有限元程序带来了方便.
In this paper, the characteristics and relationships of various failure criteria for concrete materials are studied, and general failure criteria for general concrete, steel fiber reinforced concrete, lightweight aggregate concrete and steel fiber lightweight aggregate concrete under multiaxial stress are given. The influence of different material properties and steel fiber content on space failure criteria was considered, so that the failure criteria of different concrete materials were unified. This was not involved in previous research work. For different concrete materials, the failure criteria given in this paper are The test value agrees well. The general damage criterion proposed in this paper brings convenience for the realization of its finite element program.