摘要
国内已有部分超高层建筑结构采用钢骨混凝土连梁联肢剪力墙,但现行规范尚未对其钢骨含钢率等控制参数给予明确规定。为此,对不同含钢率的钢骨混凝土连梁联肢剪力墙进行了低周反复荷载试验研究、ABAQUS有限元模拟以及变参数分析。分析结果表明:钢骨混凝土连梁联肢剪力墙试件的破坏模式、水平承载力、变形能力和耗能能力明显优于钢筋混凝土连梁联肢剪力墙;由ABAQUS参数分析结果可知,钢骨含钢率应控制在4%~8%之间,且宜增加连梁钢骨腹板的面积。
Coupled shear walls with steel reinforced concrete( SRC) coupling beams have recently been applied in practical projects. Nonetheless,no clear requirement is specified in current codes on key parameters such as steel ratio of this technology. This research performed cyclic loading tests on coupled shear walls using SRC coupling beams with variable steel ratio. Finite element analysis with software of ABAQUS and variable parametric analysis were further conducted. The results of experiments and finite element analysis show that better failure mode and higher deformability,energy dissipation capacity and ultimate horizontal bearing capacity of shear walls with SRC coupling beams can be observed than those of shear walls with reinforced concrete( RC) coupling beams. And from the results of finite element analysis with ABAQUS,it can be concluded that the optimal steel ratio in the beams ranges from 4%to 8% and the web area of the steel should be increased.
出处
《建筑结构学报》
EI
CAS
CSCD
北大核心
2015年第3期36-45,共10页
Journal of Building Structures
基金
国家自然科学基金项目(51322803)
"十二五"国家科技支撑计划项目(2012BAJ13B02)
