半刚性连接钢框架频率的研究  

Study on frequency of semi-rigid steel frames

作　　者：马翠玲[1] 孙颂旦 华建兵[1] 孙爱琴[1] 

机构地区：[1]合肥学院建筑工程系,安徽合肥230022 [2]宣城柏庄置业有限公司,安徽宣城242000

出　　处：《西安科技大学学报》2010年第2期187-191,共5页Journal of Xi’an University of Science and Technology

基　　金：山东省自然科学基金资助项目(Q2003F01);合肥学院自然科学研究项目(08KY025ZR)

摘　　要：通过对焊接连接、端板螺栓连接、角钢螺栓连接钢框架进行动力试验,同时结合工程实际设计的不同框架进行有限元模态分析,研究了框架层数、框架跨数,尤其是梁柱连接节点的转动刚度等参数对钢框架频率、周期等动力特性的影响。试验和理论分析表明:梁柱节点分别为焊接连接、端板连接、角钢焊接时,其结构的周期依次增大;半刚接钢框架的周期、频率介于刚接和铰接框架之间,节点存在的柔性将降低结构的自振频率,特别是对结构的基本频率影响较大。Based on the dynamic test on the weld connection, the end-plate connection and the angle connection＇s steel frame ,the mode analysis is discussed to investigate the relations between frame pa- rameters and the dynamic characteristics of different finite element analytic models for practical engineering, the parameters include floor number, span number and damp of the frame, especially the rota- tion stiffness of beam-to-column connections. The test and analysis show that the period of frames in- crease in turn for the weld connection＇s, the end-plate connection＇s and the angle connection＇s steel frame respectively. Comparing with the steel frame structure, the period and frequency of semi-rigid frames are between rigid and simple frames and semi-rigid connection will reduce the existence of the flexible structure of the natural frequencies, especially for the fundamental frequency of the structure.

关 键 词：半刚性钢框架 动力试验 有限单元法 

分 类 号：TU391[建筑科学—结构工程]