狗骨式型钢混凝土框架节点性能的有限元分析  

FINITE ANALYSIS OF SEISMIC BEHAVIOR OF JOINTS IN COMPOSITE FRAME WITH DOG-BONE CONNECTIONS

作　　者：殷诗宝 邹昀[2] 李天祺[2] 杨丽梅 张大林[2] 雷天歌 丁杰 

机构地区：[1]无锡同济钢构项目管理有限公司,江苏无锡214072 [2]江南大学环境与土木工程学院,江苏无锡214122

出　　处：《钢结构》2017年第12期67-71,共5页Steel Construction

基　　金：国家自然科学基金项目(51378240);2015年江苏省建筑节能与建筑产业现代化科技支撑项目;2016年江苏省建筑产业现代化示范基地项目

摘　　要：型钢混凝土结构是近几年国内外逐步推广的一种结构形式,在借鉴狗骨式钢框架节点构造的基础上,提出类似的型钢混凝土框架节点构造,将型钢梁端部的上、下翼缘削弱,通过削弱梁的抗弯能力保护主体构件免于损伤,实现延性设计,充分发挥钢材的塑性性能。针对型钢翼缘削弱部位进行详细的参数设计,利用有限元软件ABAQUS对普通型钢混凝土框架节点和狗骨式型钢混凝土框架节点进行了单调加载和低周往复加载下的模拟计算,通过对比分析两种节点的强度、刚度、延性、耗能等指标,探明这类节点的受力特点和抗震性能。Dog-bone connection has been widely used at home and abroad in recent years. Based on the construction of dog-bone connection in steel frame,a new connection type was put forward. The characteristic of the new connection type was that the beam＇s top and bottom flanges which were close to joints were weakened. The design concept was that the use of dog-bone connection can reduce the bending strength in the weakened part,which would lead to yielding and forming plastic hinge,thus the weakened part eventually prevented the core area of beam to column joint from yielding. The plastic hinges located at the ends of beams had better ductility under severe earthquakes,which meant the joints could be protected so that ductility designs were achieved and the plastic properties of steel were fully utilized. Parameters of dog-bone frame joints with respect to the reduced steel flanges of beam were designed. Monotonic loading and low cycle loading simulation computations of dog-bone frame joints were conducted by ABAQUS. The properties such as joint strength,stiffness,displacement ductility and energy dissipation capacity were analyzed. The mechanical properties and seismic behavior of this kind of joints were comprehensively studied.

关 键 词：狗骨式节点 有限元分析 型钢混凝土 抗震性能 

分 类 号：TU398.9[建筑科学—结构工程]