【摘要】 为解决型钢混凝土梁柱节点处构造复杂与施工困难的问题,提出了构造简单且便于施工的节点核心区采用U形拉结筋和梁端型钢腹板开矩形孔的两种型钢混凝土梁柱节点。为考察两种新型型钢混凝土梁柱节点和普通型钢混凝土梁柱节点抗震性能的区别,对3种不同形式的9个型钢混凝土梁柱节点试件进行了低周往复荷载作用下的拟静力试验,分析各种节点的承载力、耗能性能、滞回特性等。试验结果表明:各试件均发生了梁端塑性铰破坏;与普通型钢混凝土梁柱节点相比,核心区采用U形拉结筋的节点的承载力、延性及耗能性能基本相同,而梁端型钢腹板开矩形孔的节点则降低较多。更多还原

【Abstract】 In order to solve the problems of the construction difficulty and complex structural details in steel reinforced concrete beam-column joints,two new types of steel reinforced concrete beam-column joints were proposed with U-shaped bars in joint core area and rectangular hole at beam end web respectively which were convenient for construction with simple structural details. In order to investigate differences of the seismic behaviors of the steel reinforced concrete beam-column joint and common steel reinforced concrete beam-column joint,the pseudo-static tests under low cyclic loading were carried out on nine specimens of three different types to study the loading capacity,energy dissipation capacity,and hysteretic characteristics. The results show that the plastic hinge failures appear at beam ends of all specimens. Compared with the common steel reinforced concrete beam-column joint,the bearing capacity,ductility and energy dissipation capacity of steel reinforced concrete beam-column joint using U-shaped bars in joint core area are almost the same,but steel reinforced concrete beam-column joint with rectangular hole at beam end web experiences a significant decrease in the above properties.更多还原