带接触环的双钢管约束屈曲支撑的恢复力特征分析

Analysis of force restoring characteristics of buckling restraining braces formed with double-tube with contact ring

带接触环的双钢管约束屈曲支撑(TBRBs)是一种新型的约束屈曲支撑,是对双钢管约束屈曲支撑的改进.基于有限元理论,建立带接触环的双钢管约束屈曲支撑的有限元模型,通过详细计算与分析,表明这种约束屈曲支撑具有良好的耗能能力和恢复力特征,而且改善了常用约束屈曲支撑所出现的连接困难等问题.

Double-tube buckling restraining braces with contact ring was a new buckling-restraining braces（BRBs）,being a refinement for the double-tube buckling restraining braces.Based on the theory of finite element,a finite element entity model of double-tube buckling restraining brace with contact-ring was developed.This brace was systematically computed and analyzed.The analysis result indicated that this kind of buckling restraining brace had good energy dissipation ability and force restoring characteristics,and the difficulty in connecting the common buckling-restraining braces was avoided.