摘要
为了系统研究半刚接钢框架(柱弱轴)-RC剪力墙结构的抗震性能,基于该结构滞回性能所进行的循环荷载下的试验研究,以试验试件作为BASE试件,衍生出剪力墙厚、混凝土等级、水平抗剪钢筋、暗柱和暗梁配箍率以及剪力钉数量5个系列试件。利用自编的非线性有限元程序SRCWNP,对各种试件的滞回性能进行了有限元模拟,分析相关设计参数对结构滞回性能、刚度衰减、耗能性能及破坏模式的影响规律。结果表明:影响SRCW结构体系的承载能力和延性的主要因素是RC剪力墙的厚度和混凝土等级,而改变RC墙体配筋率(包括水平抗剪钢筋和暗柱、暗梁箍筋)和连接面上的剪力钉数量,对结构的整体性、延性和耗能能力有一定程度的影响。研究成果为进一步深入研究及工程设计与应用提供了理论依据。
In order to investigate the seismic behavior of composite steel frame with PR connection-reinforced concrete infill wall in column weak axis direction, the test specimen conducted by the authors was selected as the base model for a further FE analysis. A series of models were designed, with critical parameters such as the thickness of shear wall, concrete strength, horizontal shear-resisting reinforcement, the volume ratio of the hook in the confining reinforcement cages and the number of the shear studs taken into consideration. The nonlinear finite element program named SRCWNP for simulating the hysteresis behavior of SRCW was adopted to study their effects on the structural performance respectively, such as hysteresis behavior, stiffness degradation, energy dissipation and failure mode. The results showed that the thickness of shear wall and concrete strength are the principal parameters influencing the structural load-carrying capacity and ductility, while changing the reinforcement ratio and the shear studs numbers affected the structural integrity, ductility and energy-dissipation capacity to some extent. The study achievements provide the basis for further studying and engineering design and practice.
出处
《建筑结构学报》
EI
CAS
CSCD
北大核心
2008年第2期63-71,共9页
Journal of Building Structures
基金
国家自然科学基金资助项目(50378058)
关键词
SRCW结构
半刚接钢框架
剪力墙
有限元法
滞回性能
SRCW structural system
steel frame with PR connection
shear wall
FEM
hysteresis behavior
