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提出一种具有双屈服点并能防止因变形过大而发生断裂的新型屈曲约束支撑,通过试验研究,验证了其传力机制和耗能能力。采用ABAQUS软件对试验进行数值模拟,从数值角度对该型支撑的受力机理进行研究。采用工程设计中常用的SAP2000软件中的非线性连接单元,对该屈曲约束支撑进行计算,将计算和试验结果进行对比,为新型屈曲约束支撑在实际工程中的应用提供了计算工具。试验结果表明,该型支撑具有良好的耗能能力和变形能力,计算结果能与试验结果吻合较好。
A new type of buckling restraining brace with double yield points and the ability to prevent fracture due to excessive deformation is proposed. The experimental study shows that the transmission mechanism and the energy dissipation capacity of the buckling restraint brace are validated. The ABAQUS software was used to simulate the experiment, and the mechanical mechanism of this type of support was studied numerically. The nonlinear buckling element in SAP2000 software, which is commonly used in engineering design, is used to calculate the buckling restraint brace. The calculation and test results are compared to provide a calculation tool for the application of the new buckling restraint brace in practical engineering. The test results show that this type of brace has good energy dissipation capacity and deformation capacity, and the calculated results are in good agreement with the experimental results.