摘要
本文通过几何比例为1:20的15层钢筋混凝土框筒结构的一系列振动台试验,分析了框简结构动力持性的变化规律,研究了单向(水平或竖向)和双向(水平与竖向)地震作用下框筒结构的动力反应以及框简结构的破坏机理,着重探讨了竖向地震对框筒结构地震反应的影响。本文还应用三维杆系有限元弹塑性动力分析程序HODYNA对所试验的框筒结构进行分析,并与试验结果比较。此外,还从理论上探讨了竖向地震对框筒结构破坏的影响,并取得与试验结果相同的结论。
In the paper, through a series of shaking table tests on a 15-story regularly hexagonal reinforced concrete frame-tube model with 1:20 scale, the regularities of natural frequencies, mode shapes and critical damping values of the structure are analyzed. The dynamic responses of the structure under one-dimension (horizontal or vertical) and two-dimension (horizontal and vertical) earthquake motion are studied.Especially,the influences of vertical motion on dynamic response and the failure mechanism of the structure are emphatically discussed.Using a finite element program of a three-dimension bar system, the nonlinear dynamic analysis for the structure tested is conducted,and finally the calculated and experimental results are compared.Besides,the influences of vertical earthquake motion on the failure of reinforced concrete frame-tubes are also studied by using FEM and a conclusion consistent with the experimental results is obtained.
出处
《地震工程与工程振动》
CSCD
北大核心
1992年第1期57-67,共11页
Earthquake Engineering and Engineering Dynamics
基金
国家教委博士点基金
