【摘要】 根据10个梁高不等钢筋混凝土框架中节点试件在低周反复荷载作用下的试验结果,分析了该类非规则节点的破坏过程和破坏特点.在试验研究的基础上,根据节点区梁柱传来外力的平衡条件,建议了核心区发生剪切破坏的钢筋混凝土中节点受力分析的数学模型,并应用该模型对变梁节点受力性能进行参数分析.研究结果表明:对于核心区发生剪切破坏的节点试件,节点剪力和层间剪力二者并非线性比例关系;梁筋与核心区混凝土二者间的粘结锚固是影响节点抗剪强度的关键参数.更多还原

【Abstract】 Ten specimens of interior joints with different depth beams were tested under reversed cyclic loading.The experimental study was focused on the failure characteristics and failure process of interior joints with different depth beams.Based on the experimental study,a mathematical model for equivalent joint core of interior joint with different depth beams is established for calculating the shear strength of interior joint by satisfying force equilibrium within the joint panel.In addition,a parametric study was undertaken to investigate the behaviour of interior joints with different depth beams.Results indicated that joint shear stress is not proportional to story shear and that the moment resisting capacity depends on the anchorage capacity of beam bar through joint.更多还原