地震工程学报2025，Vol.47Issue(3)：501-511,11.DOI:10.20000/j.1000-0844.20231026003
自复位支撑结构设计屈服点确定方法研究
Determination method for yield points in the design of self-centering braced structures
摘要
Abstract
Accurate determination of structural yield points is critical for developing constant-ductility elastic-plastic displacement response spectra.This study proposes a systematic method to identify design yield points for self-centering braced structures.Using the direct displacement-based design method(DDBD),three-story and five-story steel frame structures with self-centering buckling-restrained braces(SCBRB)were designed,and the impact of design yield points on the accuracy and outcomes of DDBD was thoroughly analyzed.The research results show that,for both low-rise and multi-story structures,the structural ductility capacity can achieve the target ductility demand using the proposed determination method for seismic design.Under an 8-degree earthquake,the maximum story drift ratio of structures designed with the proposed method is closer to the design goal of 2％compared to conventional determination approaches,and the ini-tial design stiffness of SCBRB is also reduced.These results demonstrate the effectiveness of the proposed method in balancing safety and economy for SC-BRB structural systems.关键词
自复位支撑结构/直接基于位移的设计方法/屈服点/弹塑性位移反应谱Key words
self-centering braced structure/direct displacement-based design method/yield point/elastic-plastic displacement response spectrum分类
土木建筑引用本文复制引用
王涛,孔涛,孟丽岩,潘蕊,潘雨桐..自复位支撑结构设计屈服点确定方法研究[J].地震工程学报,2025,47(3):501-511,11.基金项目
国家自然科学基金项目(52278173,52078398) （52278173,52078398）
