双槽钢耗能段偏心支撑框架耗能性能研究  

Research on energy-dissipation performance of eccentrically braced frames with two channels

作　　者：齐益[1] 赵宝成[1] 赵书全 

机构地区：[1]苏州科技学院土木工程学院,江苏苏州215011 [2]青海省建筑建材科学研究院,青海西宁810008

出　　处：《苏州科技学院学报（工程技术版）》2015年第2期36-41,共6页Journal of Suzhou University of Science and Technology （Engineering and Technology）

摘　　要：为了研究螺栓连接双槽钢耗能段K形偏心支撑钢框架的耗能性能,分析耗能段与横梁的连接构造对偏心支撑钢框架性能的影响,采用有限元分析软件ANSYS对11个不同连接构造的试件进行了有限元模拟计算,分析了螺栓直径、横梁加固板厚度和螺栓中心间距3个参数对K形偏心支撑钢框架的强度、刚度、变形和耗能性能的影响。析结果表明,连接节点螺栓受剪破坏为脆性破坏,螺栓孔承压破坏为延性破坏;连接节点承载力高,耗能段能充分发挥耗能能力,适当的螺栓孔承压变形会使节点提供结构一定的塑性变形,提高结构耗散的能量。In order to study the energy-dissipation performance of the K shape eccentrically braced steel frames with links of two channels in the web-bolted connections and to analyze the influence of the connection between link and beam on the performance of EBF, the nonlinear finite element analysis for 11 samples with different connections was performed by ANSYS. The influence of the diameter of bolts, the thickness of beam＇s reinforcement plates and the spacing of bolts on the strength, rigid, deformability and energy-dissipation performance of EBF systems has been studied. The result shows that the fracture in the bolt shank results in a brittle response in structure and bear failure results in a ductile response in structure. The link＇s energy- dissipation performs better when the capacity of the connection is higher, and the additional inelastic rotation and energy-dissipation capacity can be achieved in the connection when the bolt bearing deformations are allowed to occur.

关 键 词：耗能段 槽钢截面 偏心受力 螺栓连接 

分 类 号：TU392.4[建筑科学—结构工程]