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基于材料的弹塑性响应分析,能更为准确地反映结构在罕遇地震作用下的非线性,对判断结构安全性及破坏状态具有重要意义。基于现行混凝土规范,并对其补充修正,增加箍筋约束效应,在ABAQUS平台上,编写结构在往复荷载下VUMAT材料子程序,并根据中国建筑学会抗震防灾分会建筑抗倒塌专业委员会公布的试验结果,对两类压弯构件进行数值模拟,模拟结果与试验结果具有良好的吻合度,可以用于钢筋混凝土梁柱构件的弹塑性分析。
Based on the elasto-plastic response analysis of materials, it can more accurately reflect the nonlinearity of the structure under the action of rare earthquakes, which is of great significance to determine the structural safety and the damage state. Based on the current concrete code, and adding amendments to it, to increase the restraining effect of the stirrups, the VUMAT material subroutine under the reciprocating load was compiled on the ABAQUS platform, and the test was published according to the structural collapse resistance professional committee of the Chinese Society of Architects Earthquake and Disaster Prevention Branch. As a result, the numerical simulations of two types of compression-bending members are performed. The simulation results are in good agreement with the test results and can be used for elasto-plastic analysis of reinforced concrete beam-column members.