屈曲延迟型增强构件的设计方法

Design Method of Buckling-delayed Reinforced Members

在已有的防屈曲耗能支撑研究成果基础上,提出了屈曲延迟型增强构件的设计方法;在内核构件已经确定的情况下,研究了外围构件的刚度和强度对整体构件稳定极限承载力的影响;通过大量有限元算例并结合理论推导,获得了这类构件的稳定承载力计算公式;给出了加劲肋间距、长螺杆连接件的设计控制条件。研究结果表明:屈曲延迟型增强构件可用于已有建筑物结构构件的加固改造等,提出的设计方法可为工程应用提供指导。

Based on the available research results of buckling-restrained braces,the design method of buckling-delayed reinforced members（BDRM） was presented.The effects of stiffness and strength for outer members on stability ultimate bearing capacity of whole members were studied when the core members had been determined.Through lots of finite element examples and theoretical derivation,the formula for calculating stability ultimate bearing capacity of BDRM was achieved.The distances between ribbed panels and the design control conditions of long screw connectors were suggested.Research results show that BDRM can be used for reinforcement of existing members in old building structure,and the design method can provides the guidance for engineering applications.