摘要
为了提高防屈曲支撑的整体稳定性,提出一种新型外围约束机制。通过在外套筒内壁设置不同形式的加劲管,增强了支撑的抗侧刚度。对支撑进行ANSYS数值模拟,在进行非线性屈曲分析的过程中,同时考虑材料、几何、接触三大非线性以及初始几何缺陷,分析其在不同形式加劲下支撑的有效应力、侧向变形及承载力。
In order to ensure the holistic stability of buckling-restrained braces,a kind of innovative periphery restriction mechanism was put forward.Its lateral stiffness was enhanced by setting stiffening tube on the wall of restriction.While conducting ANSYS numerical simulation of the longitudinal stiffened buckling-restrained braces,three nonlinear factors of material,geometry,and contact and initial geometric imperfections were taken into to analyze the effective stress,lateral deformation and bearing capacity of core components under the different forms of stiffening.
出处
《建筑结构》
CSCD
北大核心
2017年第S1期652-657,共6页
Building Structure
关键词
防屈曲支撑
加劲管
接触非线性
侧向位移
滞回曲线
buckling-restrained brace
stiffening tube
nonlinear contact
lateral displacement
hysteretic curve
