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针对HRB500级高强钢筋在剪力墙与框筒结构体系中作为受力钢筋的安全性进行了分析。采用HRB500级钢筋代替HRB400级钢筋,应用EPDA软件对两个工程实例进行建模和弹塑性时程分析。分析结果表明,对于使用HRB500级高强钢筋的结构,在满足轴压比、构造要求及常遇地震的变形要求等条件下,结构在罕遇地震作用下的最大层间位移角满足变形要求,达到“大震不倒”的第三水准抗震设防目标。分析结果可为使用高强钢筋的结构的安全性提供数据支持和技术依靠。
In this paper, the safety of HRB500 high strength steel bar as the reinforced bar in the shear wall and frame tube structure system is analyzed. Using HRB500 steel instead of HRB400 steel, EPDA software was applied to modeling and elasto-plastic time history analysis of two engineering examples. The results show that under the condition of using HRB500 high-strength steel bar to meet the requirements of axial compression ratio, structural requirements and the deformation of frequently encountered earthquakes, the maximum interlayer displacement angle of the structure under rare earthquakes satisfies the deformation requirements “Earthquake does not fall,” the third level of seismic fortification goals. The results of the analysis provide data support and technical support for the safety of structures using high strength steel.