带转换层筒中筒结构模型静力弹性试验  

Static elastic experiment of tube-in-tube structural model with transfer storey

作　　者：陈伯望[1] 雷玉成[1] 李频[1] 党晓冰 

机构地区：[1]中南林业科技大学土木工程与力学学院,长沙410004

出　　处：《建筑结构》2016年第9期48-53,共6页Building Structure

摘　　要：制作比例为1∶10的13层带转换层的筒中筒结构模型,底部5层为钢管混凝土框支柱,上部转换为钢筋混凝土外框筒,内部为落地钢筋混凝土核心筒,高位转换且竖向刚度有突变,模型结构形式比较复杂。为了掌握复杂高层建筑结构的抗震性能,对模型施加不同工况的水平荷载,测试模型在水平荷载作用下的静力弹性性能。试验结果表明,竖向荷载能显著减少结构的侧向变形和扭转变形,水平荷载及偏心距大小与结构的侧向变形和扭转变形基本上呈比例关系,且变形符合叠加原理,结构的刚度突变使结构的侧向变形和扭转变形在转换层出现明显拐点。A 13-storey tube-in-tube structural model with transfer storey was made with scale of 1∶ 10. The bottom five lays of the model are concrete filled steel tubular frame-supporting columns,and on-ground reinforced concrete corewall is adopted inside. Structural form of the model is complicated because there is high-level transfer and vertical stiffness mutation. In order to master the seismic performance of this complex high-rise building structure,horizontal loadings under different working conditions were exerted on the model to test the static elastic performance of the model under the horizontal loading action. The test results show that vertical loading can reduce lateral displacement and torsion displacement of the structure significantly. The values of horizontal loading and eccentric distance are in proportional relation with lateral displacement and torsion displacement of the structure. The displacement is in accordance with the superposition principle and there appears an obvious inflection point of lateral displacement and torsion displacement in the transfer layer of the structure due to stiffness mutation.

关 键 词：钢管混凝土柱 框支转换 筒中筒结构 模型试验 弹性变形 

分 类 号：TU317.1[建筑科学—结构工程]