- 摘 要
-
（清華大學土木工程系， 北京 100084）
［摘要］預應力索撐型防屈曲支撐（PCS-BRB）是通過在普通防屈曲支撐的外圍增加索撐體系而形成的一種新形式防屈曲構件。這種新型的防屈曲支撐通過改變外圍約束構件的結構組成體系，達到有效提高外圍約束剛度及支撐承載效率的目的。依據(jù)索撐體系的不同布置形式，有多種類型的PCS-BRB。以某工程為背景，對PCS-BRB進行應用研究，詳細介紹了其基本組成和構造設計，分析了PCS-BRB的單調(diào)加載與往復加載的受力性能，為工程設計與施工提供參考。
［關鍵詞］防屈曲支撐； 預應力； 滯回性能； 工程應用
中圖分類號：TU352文獻標識碼：A文章編號：1002-848X(2017)08-0001-06
Application study on pre-tensioned cable stayed buckling-restrained brace in an engineering
Guo Yanlin, Fu Pengpeng, Hu Zhengping
(Department of Civil Engineering, Tsinghua University, Beijing 100084, China)
Abstract: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-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.
Keywords:buckling-restrained brace; pre-tensioning force; hysteretic behavior; engineering application
作者簡介：郭彥林，教授，博士生導師，Email: gyl@tsinghua.edu.cn。
