【摘要】 设计制作了一种新型全钢、装配式的防屈曲耗能支撑(BRB),给出了主要的理论计算公式,采用有限元方法对其工作过程和机理进行数值模拟并进行了足尺实验研究,最后,将这种装置安装到框架结构,基于非线性动力时程分析评估其减震性能。研究结果表明了简化计算和有限元分析在产品初步设计中的有效性;防屈曲耗能支撑明显减小了结构动力响应,提高了结构的抗震安全性。更多还原

【Abstract】 A new type of full steel assembled buckling-restrained brace(BRB) is proposed.Main theoretical formulas are given,while the working process and mechanism of BRB is simulated by employing the finite element analysis(FEA),further more,the full-scale test is conducted to verify the results of simplified calculation method and FEA.Finally,the nonlinear dynamic time history analysis of buckling-restrained braced frames(BRBF) structure is simulated to assess the seismic mitigation performance of BRB.It showsd that the effectiveness of theoretical simplified calculation and FEA in initial design of BRB product and BRB is able to significantly mitigate the dynamic responses and improve the safety of structure subjected to earthquake.更多还原