端部固定转角对叠层橡胶支座水平刚度影响分析  

Analysis of horizontal stiffness of laminated rubber bearing considering end fixed angle effect

作　　者：杜永峰[1,2] 吴忠铁[1] 范萍萍[3] 

机构地区：[1]兰州理工大学防震减灾研究所,甘肃兰州730050 [2]兰州理工大学西部土木工程防灾减灾教育部工程研究中心,甘肃兰州730050 [3]兰州工业学院土木工程学院,甘肃兰州730050

出　　处：《合肥工业大学学报（自然科学版）》2013年第12期1489-1494,共6页Journal of Hefei University of Technology：Natural Science

基　　金：国家自然科学基金资助项目(50978130;51178211);甘肃省科技支撑计划资助项目(090-GKCA040)

摘　　要：文章为了研究端部固定转角对叠层橡胶支座水平刚度的影响,采用直接积分法,推导了在压剪作用下叠层橡胶支座带有端部固定转角参数的水平刚度方程,并根据端部固定转角情况将水平刚度方程分成4类,通过算例分析了端部固定转角、竖向荷载及水平荷载等参数对叠层橡胶支座水平刚度的影响。结果表明:端部固定转角和水平荷载对叠层橡胶支座水平刚度的影响具有方向性效应;在端部固定转角和水平荷载一定时,叠层橡胶支座水平刚度随着竖向荷载的增大而降低;为了满足工程需求,根据端部固定转角与初始变形和初始水平刚度的变化情况,端部固定转角宜控制在0.25%以内。In order to analyze the effect of end fixed angle on the horizontal stiffness of the laminated rubber bearing, the equation of horizontal stiffness of the laminated rubber bearing with the end fixed angle was derived by the direet integration method under the vertical force and share force. Four con- ditions were sorted considering the different end fixed angle and a numerical example was given to ana- lyze the effect of the parameters of end fixed angle, horizontal force and vertical force on the horizon- tal stiffness of the laminated rubber bearing. The results are as follows, the end fixed angle and hori- zontal force have a directional effect on the horizontal stiffness of the laminated rubber bearing~ when the end fixed angle and horizontal force are given, the horizontal stiffness of the laminated rubber bearing decreases with the increase of the vertical force; the end fixed angle should be less than 0. 25 % to satisfy the engineering requirement based on the initial displacement and initial horizontal stiffness.

关 键 词：叠层橡胶支座 端部固定转角 直接积分法 水平刚度 方向性效应 

分 类 号：TU318[建筑科学—结构工程]