带初始角度的摩擦摆支座单层球面网壳结构受力性能研究  

Research on mechanical performance of single-layer reticulated domes with friction pendulum bearings including initial angle

作　　者：孔德文[1] 王玲玲[1] 支旭东[2] 范峰[2] 

机构地区：[1]贵州大学土木工程学院,贵州贵阳550025 [2]哈尔滨工业大学土木工程学院,黑龙江哈尔滨150090

出　　处：《建筑结构学报》2016年第S1期108-113,共6页Journal of Building Structures

基　　金：贵州大学引进人才科研基金项目(贵大人基合字2015-21号);国家自然科学基金面上项目(51278152)

摘　　要：将带初始角度的摩擦摆支座应用到单层球面网壳结构中,通过有限元分析,研究了单层球面网壳结构的受力性能。选取El Centro波、Taft波,在水平、竖向和三维地震作用下分析带初始角度的摩擦摆支座对单层球面网壳结构抗震性能的影响。结果表明:静力荷载作用下,随着摩擦摆支座初始角度的增大,支座提供的水平支承力增加,单层球面网壳结构的内力和变形减小;当摩擦摆支座的初始角度小于15°时,在水平和三维地震作用下,网壳结构的减震效果相近,而在竖向地震作用下,随着摩擦摆支座初始角度的增大,网壳结构的减震效果增加;建议摩擦摆支座的初始角度小于15°。Friction pendulum bearings( FPB) with initial angle were applied to the single-layer reticulated domes and the mechanical properties of reticulated domes with FPBs including initial angle were systematically studied by the finite element analysis( FEA). The influence of initial angles of FPB on seismic performance of reticulated domes was analyzed under the horizontal,vertical and 3D earthquakes of El Centro and Taft wave. The results show that the internal force and deformation are gradually weakened and the horizontal force provided by the FPB increases with the increase of initial angle under static load. When the initial angle of FPB is less than 15,vibration reduction effect of reticulated domes is similar under the horizontal and 3D earthquakes,and the effect is gradually strengthened with the increase of initial angle under the vertical earthquakes. So it is suggested that the initial angle of FPB is less than 15.

关 键 词：单层球面网壳带 摩擦摆支座 初始角度 有限元分析 受力性能 

分 类 号：TU399[建筑科学—结构工程]