防屈曲耗能支撑研究与应用的新进展

防屈曲耗能支撑是一种性能优良的新型耗能减震构件。本文阐述了防屈曲耗能支撑的构成和基本原理,根据约束构件的不同材料形式,将防屈曲耗能支撑划分为混凝土约束型防屈曲耗能支撑、全钢型防屈曲耗能支撑和装配式防屈曲耗能支撑。分别介绍了防屈曲耗能支撑的类型与性能、防屈曲耗能支撑框架分析与子结构试验,以及防屈曲耗能支撑在工程中的应用情况和标准化。指出了防屈曲耗能支撑研究和推广应用中存在的问题,给出了今后研究与应用的建议。

State-of-the-art and State-of-the-practice of Buckling-restrained Brace

Buckling-restrained Brace(BRB) is a novel and excellent component for energy dissipation and vibration reduction.In this paper,the construction and theory of BRB were introduced,and BRB was divided into concrete-restrained,all-metallic and assembled types based on restrained materials.The state-of-the-art of each type of the BRB was shown respectively.The types and performance of BRB were presented.The analysis methods of buckling-restrained brace frame(BRBF) and testing methods for substructure of BRBF were summarized.Engineering application and standardization of BRB were recommended.At the end of this paper,the problems with research on and application of BRB were pointed out,and the suggestion for future study on and application of BRB was provided.