T型钢连接中柱节点的力学性能分析  

MECHANICAL PERFORMANCE ANALYSIS OF T-STUB CONNECTION MIDDLE COLUMN

作　　者：张梦龙 张效禹 时建华 ZHANG Menglong;ZHANG Xiaoyu;SHI Jianhua(School of Civil Engineering,Qingdao University of Technology,Shandong Qingdao 266033,China)

机构地区：[1]青岛理工大学土木工程学院,山东青岛266033

出　　处：《低温建筑技术》2020年第1期61-64,共4页Low Temperature Architecture Technology

摘　　要：设计了2组T型钢连接中柱节点,对节点进行低周往复循环加载下的受力分析,通过循环荷载下的滞回曲线、骨架曲线、应力云图以及刚度退化曲线来分析螺栓连接方式变化对节点承载力、受力性能以及破坏形式的影响。分析结果表明:普通高强螺栓连接的中柱节点承载力和耗能能力明显强于对拉螺栓连接的中柱节点;两种节点破坏形态不同,普通高强螺栓连接节点为T型钢翼缘受拉破坏,对拉螺栓连接节点为长对拉螺栓剪切破坏和T型钢翼缘受拉破坏。Two sets of T-stub connecting middle column are designed.The force analysis of the connection under low-cycle reciprocating cyclic loading is carried out.The hysteresis curve,skeleton curve,stress cloud diagram and stiffness degradation curve under cyclic loading are used to analyze the change of bolt connection mode.The influence of node bearing capacity,force performance and damage form.The analysis results show that the bearing capacity and energy dissipation capacity of the middle-column connections of ordinary high-strength bolts are obviously stronger than those of the middle pillars connected to the bolts;the failure modes of the two connections are different,and the common high-strength bolt connections are damaged by the T-shaped steel flanges.The pull-bolt joints are shear-damaged by long-pair pull bolts and tensile damage of T-shaped steel flanges.

关 键 词：T型钢连接节点 力学性能 滞回性能 有限元分析 

分 类 号：TU391[建筑科学—结构工程]