带内隔板方钢管T型节点抗震性能的试验研究  

EXPERIMENTAL RESEARCH ON SEISMIC BEHAVIOR OF RHS T-JOINT WITH INNER STIFFENED PLATE

作　　者：陈恒超[1] 邓芃[2] 王忠颖[2] 刘艳[2] 李浩[2] 

机构地区：[1]遵义职业技术学院,贵州遵义563123 [2]山东科技大学土木工程与建筑学院,山东青岛266590

出　　处：《工业建筑》2017年第5期132-136,178,共6页Industrial Construction

基　　金：山东省高等学校科技计划项目(J13LG05)

摘　　要：通过2个T型方钢管节点和4个内隔板加劲节点的低周反复试验,研究内隔板加劲节点的破坏模式、节点的承载力、延性变形能力和节点局部刚度的变化规律。试验中2个未加劲T型节点试件在受拉时主管出现剪切破坏、节点延性差。设置内隔板后,节点试件的屈服荷载和峰值荷载明显增大;在受拉状态下,试件达到峰值荷载后的承载力削弱缓慢、试件的变形能力明显增强;在受压状态下,加劲节点的承载能力明显增大,但节点试件节点区焊缝和主管板件的开裂,导致试件的延性有所降低。Based on the quasi-static test for two square tubular T-joint and four inner stiffener joints, the failure mode, bearing capacity, ductile deformation and the local stiffness law of the joint were investigated. The test results showed that the shear failure on main chord section was the major pattern for the two unreinforced T-joint under tensile stress, and the specimens had weak ductility capacity. The inner stiffened plate could improve the yielding load and peak load of the joint specimens. The bearing capacity of the reinforced specimens reduced slowly in the state of tensile stress and showed better deformation capability. The reinforced joints had better bearing capacity under compression conditions obviously,but the cracking of welds and plates in center of joints led to the weak of ductility.

关 键 词：内隔板 破坏模式 延性系数 能量耗散系数 

分 类 号：TU352.11[建筑科学—结构工程]