预应力索撑型防屈曲支撑在某工程中的应用研究  

Application study on pre-tensioned cable stayed buckling-restrained brace in an engineering

作　　者：郭彦林[1] 符鹏鹏[1] 胡正平[1] 

机构地区：[1]清华大学土木工程系,北京100084

出　　处：《建筑结构》2017年第8期1-6,共6页Building Structure

摘　　要：预应力索撑型防屈曲支撑(PCS-BRB)是通过在普通防屈曲支撑的外围增加索撑体系而形成的一种新形式防屈曲构件。这种新型的防屈曲支撑通过改变外围约束构件的结构组成体系,达到有效提高外围约束刚度及支撑承载效率的目的。依据索撑体系的不同布置形式,有多种类型的PCS-BRB。以某工程为背景,对PCS-BRB进行应用研究,详细介绍了其基本组成和构造设计,分析了PCS-BRB的单调加载与往复加载的受力性能,为工程设计与施工提供参考。As a new type of buckling-restrained braces（BRBs）,a pre-tensioned cable stayed buckling-restrained brace（PCS-BRB） is formed through adding an additional structural system of pre-tensioned cables and a number of cross-arms to the outside of a common BRB.This new PSC-BRB significantly improves the BRB＇ s overall external restraining stiffness,hence increasing the load-carrying efficiency in its structural design through changing the components of the external restraining system.The PCS-BRB can be classified into different types according to the layout of the cable stayed system.The PCS-BRB was investigated by taking a specific engineering application as the background,in which the composition and construction of the PCS-BRB was introduced in details,and the load resistance of the PCS-BRB under both monotonic and cyclic loads was analyzed,which provides further reference for engineering design and construction.

关 键 词：防屈曲支撑 预应力 滞回性能 工程应用 

分 类 号：TU352[建筑科学—结构工程]