摘要
结合传统风格钢筋混凝土梁-柱中节点的低周反复荷载试验结果,分析了传统风格钢筋混凝土梁-柱节点的受力机理及影响节点抗剪承载力的主要因素。结果表明:传统风格钢筋混凝土梁-柱节点受力机理及抗剪承载力与常规梁-柱节点有显著区别,其开裂荷载及抗剪承载能力大小主要取决于下核心区强度;节点抗剪承载力主要影响因素为混凝土强度、节点体积配箍率、轴向力及上、下梁间距。基于抗剪机理分析及主要影响因素分析,提出了传统风格钢筋混凝土梁-柱节点的开裂荷载和抗剪承载力的计算公式,根据试验结果确定了相关系数。研究成果可为该类结构的工程实践提供参考。
The mechanical behavior and the main factors of the shear capacity of the RC column-beam joint built in traditional style were analyzed based on the results of low cyclic loading test conducted on the RC column-beam joint built in traditional style.The results show that the mechanical behavior and shear capacity of the RC column-beam joint built in traditional style have significant difference with that of the ordinary beam-column joint.The crack load and shear capacity of the RC column-beam joint built in traditional style mainly depend on the strength of the lower core.The main factors of the shear capacity are the concrete strength,stirrup volume ratio of the joint,axial load and the space between up and low beams.Based on the shear mechanism and the main factors of shear capacity analysis,the formulas for crack load and shear capacity of the RC column-beam joint built in traditional style were put forward,and the correlation coefficients were determined according to the test results.The research results can provide reference for engineering practice of this kind of structure.
出处
《建筑结构》
CSCD
北大核心
2014年第19期81-86,33,共7页
Building Structure
基金
国家自然科学基金项目(51208411)
陕西省青年科技新星项目(2013KJXX-56)
亚热带建筑科学国家重点实验室开放课题(2014KA05)
西安市科技计划项目(CX12624)
