一种自复位防屈曲支撑

A Self Reset Flexion Prevention Support

在结构中加钢支撑是钢结构抗震的一种主要形式。普通支撑在受压状态下会产生屈曲现象,为了提高支撑的承载力和滞回性能,一般采用在支撑外部设置套筒的防屈曲支撑。但防屈曲支撑在震后留有过大残余变形,导致结构难以恢复。因此,本文提出一种新型的具有自复位功能的支撑构件来优化传统防屈曲支撑的抗震性能。并对该支撑进行了数值模拟,通过对结构模型进行循环加载分析来对比分析不同构件的复位能力。研究表明,该自复位防屈曲支撑相较于普通防屈曲支撑而言,能够更好的减少结构体系的残余变形。

Steel support in the structure is one of the main forms of steel structure aseismic.The buckling of normal braces under compression is very important.In order to improve the bearing capacity and hysteretic performance of braces,buckling restrained brace is usually used to support sleeves outside the support.However,the anti buckling support has a large residual deformation after the earthquake,which causes the structure to be difficult to recover.Therefore,a new type of support component with self reset function is proposed in this paper to optimize the seismic performance of the traditional anti buckling support.The numerical simulation of the support is carried out,and the reposition ability of different components is compared and analyzed by cyclic loading analysis of the structural model.The study shows that the self reset flexion support can reduce the residual deformation of the structural system better than the ordinary buckling support.