建筑结构学报2018，Vol.39Issue(3)：77-83,7.DOI:10.14006/j.jzjgxb.2018.03.010
变截面钢管混凝土格构柱抗震性能试验研究
Experimental research on seismic performance of variable cross-sectional concrete filled steel tubular laced columns
摘要
Abstract
Horizontal low cyclic loading tests of seven variable cross-sectional concrete filled steel tubular (CFST) laced columns with experimental parameters of longitudinal slope and arrangement type of lacing tubes were carried out by quasi-static test method in order to learn their seismic performance.Based on test results,the rules of failure mode,hysteresis loop,skeleton curve,ductility,energy dissipation,strength degradation,stiffness degradation and deformation recovery capability of specimens were researched.Test results indicate that hysteresis loops of specimens are plump without obvious pinching,and they have good seismic performance.The failure mode of specimens are basically the same integral bending failure.With the increase of longitudinal slope,the horizontal load carrying capacity of laced column increases,energy dissipation capacity improves,and stiffness degradation rate increases slightly.The influence of arrangement type of lacing tubes on displacement ductility is relatively big.Compared with CFST laced columns with flat lacing tube,CFST laced columns with inclined lacing tube have larger initial stiffness and horizontal peak load,smaller energy dissipation capacity and more obvious strength degradation.关键词
钢管混凝土/格构柱/变截面/拟静力试验/抗震性能Key words
concrete-filled steel tube/laced column/variable cross-section/quasi-static test/seismic performance分类
建筑与水利引用本文复制引用
欧智菁,陈盛富,吴庆雄,袁辉辉..变截面钢管混凝土格构柱抗震性能试验研究[J].建筑结构学报,2018,39(3):77-83,7.基金项目
国家自然科学基金项目(51408128,51178118),福建省自然科学基金项目(2017J01471). （51408128,51178118）
