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为检验非切削防屈曲支撑(NBRB)的构造和抗震性能,本文对非切削构造进行了ANSYS有限元塑性静力分析,并与切削构造进行力学性能对比,明确了其受力特点及薄弱环节;在有限元分析的基础上,对所设计的试件进行了低周反复加载静力试验。结果表明:由于焊缝的存在,非切削防屈曲支撑更容易在该截面发生强度或失稳破坏,对焊接质量提出更高的要求;试件荷载-位移滞回曲线稳定、饱满、对称;非切削防屈曲支撑构造合理,具有良好的耗能性能和抗低周疲劳性能,是一种新型的耗能支撑。
In order to test the structure and anti-seismic performance of non-cutting buckling brace (NBRB), ANSYS finite element static analysis of the non-cutting structure is carried out. Compared with the mechanical properties of the cutting structure, the mechanical characteristics and weak links of the non- Based on the finite element analysis, the low-cycle repeated loading static test was carried out on the designed specimen. The results show that due to the existence of the weld seam, the non-cutting buckling support is more likely to occur in the section strength or instability damage, higher requirements on the welding quality; specimen load-displacement hysteresis curve is stable, full, symmetrical; Cutting buckling support structure is reasonable, with good energy performance and low cycle fatigue resistance, is a new type of energy support.