考虑半刚性连接有侧移钢框架基本周期的计算方法  

CALCULATION OF BASIC NATURAL PERIOD OF VIBRATION OF SEMI-RIGID CONNECTION STEEL FRAME WITH SIDESWAY

作　　者：刘威 谭平[1] 郝霖霏 周福霖[1] LIU Wei;TAN Ping;HAO Linfei;ZHOU Fulin(Earthquake Engineering Research ＆ Test Center, Guangzhou University, Guangzhou 510405, China)

机构地区：[1]广州大学工程抗震研究中心,广州510405

出　　处：《钢结构》2018年第5期6-10,91,共6页Steel Construction

基　　金：广州市属高校"羊城学者"首席科学家项目(1201541630)

摘　　要：为分析半刚性连接对有侧移钢框架结构层间抗侧移刚度的影响,推导了考虑采用半刚性连接时,有侧移钢框架层间抗侧移刚度的计算式,利用推导出的计算式计算钢框架层间抗侧移刚度;并利用经验算式计算钢框架的各层水平位移及基本周期。将计算结果与传统的不考虑半刚性连接的柱抗侧移刚度修正系数法计算所得到的结果进行对比分析,可知考虑半刚性连接时,钢框架各层水平位移显著大于不考虑半刚性连接时的情况;采用所提出的方法得到的基本自振周期计算结果是不考虑半刚性连接的1.62倍;因此,对钢框架进行结构性能分析时,半刚性连接的影响应引起足够的重视。In order to analyze the influence of the semi-rigid connection of the beam-column on the inter-story drift stiffness of the steel frame structure with sidesway,the formula for calculating the inter-story drift stiffness of the steel frame with sidesway was deduced. The inter-story draft stiffness of the steel frame was calculated by the formula,the horizontal displacement of each layer and the basic natural period of vibration of the steel frame were calculated by the empirical formula. The calculation results were compared with the traditional ones,the results obtained by the method of calculating the modified coefficient considering the inter-story drift stiffness of rigid connection steel frame showed that when the semirigid connection was considered,the horizontal displacement of each layer of the steel frame was significantly greater than that considering rigid connection. The calculated results of the basic natural period of vibration,when the semi-rigid connection was considered,was 1. 62 times larger than that considered as the rigid. Therefore,more attention should be paid to the semi-rigid connection in the structural performance analysis of the steel frame.

关 键 词：钢框架 抗侧移刚度 半刚性连接 基本自振周期 水平位移 

分 类 号：TU391[建筑科学—结构工程]