防屈曲支撑应用于底部框架-抗震墙砖房加固的研究  

Study of Buckling-restrained Brace Used for Reinforcement of Frame-brick Structures

作　　者：申波[1] 薛守宝 黄伟[1] 梁影[1] 王澈泉[1] 

机构地区：[1]贵州大学空间结构研究中心,贵阳贵州550003

出　　处：《工程抗震与加固改造》2013年第3期130-135,共6页Earthquake Resistant Engineering and Retrofitting

摘　　要：针对7度以上(含7度)设防烈度、重点设防类别中小学校舍的底部框架-抗震墙砖房,对于其底部的加固,提出了增设防屈曲支撑的加固方法。首先介绍了防屈曲支撑的组成特点、耗能特性,提出了可以用于防屈曲支撑的三种中心支撑形式,给出了相关的节点构造,最后结合工程实例,对比分析了底部增设剪力墙、增设防屈曲支撑的性能特点,发现对底部框架-抗震墙砖房这种刚度较大的结构,增设防屈曲支撑有利于结构的耗能,可以提高结构整体的抗震延性。In this paper, according to the frame-brick structures on the primary and secondary school buildings with 7 -degree or above seismic precautionary intensity and key seismic fortification category, buckling-restrained brace is proposed to strengthening the frame. First, the composition and energy dissipation behavior of buckling-restrained brace are presented; Second, 3 kinds of central brace structures which are used for buckling-restrained brace are ptlt forward, and related joint details are given; Finally, for a actual frame- brick structure, its behaviors are comparatively analyzed between two reinforcement schemes of which are the methods of setting shear walls and setting buckling-restrained braces at its bottom. It can be concluded that the scheme of setting buckling-restrained braces is beneficial to the energy consumption of frame-brick structures with very strong stiffness, and the seismic ductility of the structures can be improved strongly.

关 键 词：底部框架 加固 防屈曲支撑 耗能 

分 类 号：TU352.11[建筑科学—结构工程]