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中文摘要：
对五个型钢高强混凝土框架中节点低周反复荷载作用下的试验结果进行了研究,探讨了型钢高强混凝土节点的受力机理,并对节点核心区进行了模型化分析.根据节点的受力机理和变形特点,建立了节点核心区的平衡方程和变形协调方程.在此基础上,推导了节点核心区的剪切应力-应变关系,并编制了相应的计算程序.计算结果和试验结果的对比分析表明：提出的模型化方法能够较为准确地描述节点核心区的剪切应力-应变关系;对于型钢高强混凝土框架,其抗剪的应力机理可由外部、内部混凝土斜压杆及型钢腹板共同承担;高强混凝土的脆性对节点抗剪能力有一定影响,在理论推导过程中应予考虑.
英文摘要：
The results from five cyclic loading tests carried out on five steel reinforced high strength concrete（SRHSC） frame interior joints were studied.The shear mechanism of the steel reinforced concrete（SRC） joints was investigated.On the basis of the shear mechanism and deformation characteristics of the joints,the equilibrium and deformation compatibility equations were established.The shear stress-strain relationship of the joint core under monotonic loading was derived,and the program to compute was completed.Computed results were compared with the tested ones.Results indicate that the method proposed can accurately describe the stress-strain relationship of the joint core.The shear mechanism constitutes external compression strut,internal compression strut and steel web in terms of steel reinforced high strength concrete joint core.It is noticed that the brittleness of high strength concrete makes effects on the shear resistance of the joint to some extent,which should be considered in the process of theoretical derivation.
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