螺旋箍筋约束钢管混凝土组合暗柱剪力墙抗震性能试验研究  

Seismic behavior of composite shear walls incorporating spiral hoops confining concrete filled steel tube as boundary elements

作　　者：秦佳 陈云 Qin Jia;Chen Yun(School of Civil Engineering and Architecture,Hainan University,Haikou 570228,China)

机构地区：[1]海南大学土木建筑工程学院,海南海口570228

出　　处：《海南大学学报（自然科学版）》2024年第3期321-330,共10页Journal of Hainan University（Natural Science）

基　　金：国家自然科学基金项目(51968020);海南省重点研发计划项目(ZDYF2021SHFZ070);海南省重点研发“揭榜挂帅”项目(ZDYF2022SHFZ353)。

摘　　要：研究以钢管等效代替约束边缘构件范围内的纵向受力钢筋,并在钢管外侧滚焊螺旋箍筋代替边缘构件箍筋的新型配置螺旋箍筋约束钢管混凝土组合暗柱的剪力墙结构的抗震性能.考虑高宽比、轴压比等参数设计制作新型配置螺旋箍筋约束组合暗柱的剪力墙与传统钢筋混凝土剪力墙进行低周反复荷载加载试验;分析了剪力墙的破坏形态、滞回性能、耗能能力、延性和刚度退化.研究结果表明:螺旋箍筋约束钢管混凝土组合暗柱对改善中高传统钢筋混凝土剪力墙承载能力和变形能力具有较好的效果,螺旋箍筋约束钢管混凝土组合暗柱的构造形式对耗散地震能量具有较好的作用.In the report,the seismic performance of the composite shear walls of the concealed columns of the novel CFT(concrete filled steel tube)confined with spiral stirrups were studied,in which the longitudinal steel bars were replaced with round steel tubes in confined boundary zone,and the spiral stirrup were roll-welded on the outside of steel pipe.The aspect ratio and axial compression ratio were taken into accounted to design and make the new type scale shear wall specimens,The low cycle reciprocating load test were used to analyze the failure pattern,hysteresis property,energy dissipation,ductility and rigidity degeneration of the specimens.The results indicated that the concealed columns of the CFT confined with spiral stirrups has a good effect on im⁃proving traditional reinforced concrete shear walls in medium and high heights.Our findings suggested that the construction form of spiral stirrup CFT composite concealed columns has a good effect on dissipating seismic en⁃ergy.

关 键 词：钢管混凝土组合剪力墙 组合结构 抗震性能 螺旋箍筋 

分 类 号：TU398.2[建筑科学—结构工程]