摘要
为研究钢管混凝土叠合边框内藏钢桁架剪力墙的抗震性能,制作了2个普通钢管混凝土叠合边框剪力墙试件和2个钢管混凝土叠合边框内藏钢桁架剪力墙试件。对试件进行了模拟地震振动台试验研究,对比了这2种剪力墙的动力特性、加速度时程反应和位移时程反应。利用有限元软件ABAQUS分别建立微观模型和宏观模型对不同设计参数的试件进行了弹塑性时程分析。研究结果表明,内藏钢桁架能够明显提高钢管混凝土叠合边框剪力墙的延性和抗震耗能能力;在较大的地面加速度峰值下,钢桁架减小试件地震位移的作用发挥得更明显;钢管混凝土叠合边框内部钢管壁厚的增大有利于提高剪力墙的承载力和安全储备。
In order to study the seismic behavior of shear wall with steel tube-reinforced concrete columns and concealed steel trusses,two ordinary shear wall specimens with steel tube-reinforced concrete columns were made as well as two shear wall specimens with steel tube-reinforced concrete columns and concealed steel trusses. First,the specimens were tested on the shaking table. The dynamic characteristic,acceleration time-history response and displacement time-history response of specimens were contrastively analyzed. In addition,microscopic and macroscopic models were made using finite element analysis software of ABAQUS to conduct the elastic-plastic time-history analysis of specimens with different design parameters. The study proves that the concealed steel trusses can significantly improve ductility and energy dissipation capacity of shear wall specimens with steel tube-reinforced concrete columns; the function of steel trusses to reduce displacement response is more obvious when the value of peak acceleration on the ground is larger; it is profitable for improving bearing capacity and safety margin of the shear wall to increase the wall thickness of internal steel tubes.
出处
《建筑结构》
CSCD
北大核心
2016年第23期67-72,90,共7页
Building Structure
基金
内蒙古自治区自然科学基金(2016BS0504)
内蒙古自治区高等学校科学研究项目(NJZC16091)
关键词
钢管混凝土叠合边框
内藏钢桁架
剪力墙
振动台试验
弹塑性时程分析
steel tube-reinforced concrete columns
concealed steel truss
shear wall
shaking table test
elastic-plastic time-history analysis
