Earthquake response reduction of buildings by rocking structural systems
Earthquake response reduction of buildings by rocking structural systems
复制标题
通过摇摆结构系统减少建筑物的地震响应
DOI：
10.1117/12.472562
复制
发表时间：
2002
期刊：
影响因子：
--
通讯作者：
A. Wada
中科院分区：
文献类型：
--
作者：
M. Midorikawa;T. Azuhata;T. Ishihara;Y. Matsuba;Y. Matsushima;A. Wada
我们正在开发的摇摆结构系统，可以减少建筑物的地震反应，通过引起摇摆振动。本文旨在研究摇摆系统的影响。为使结构在适当的控制下产生摇摆振动，在第一层钢柱底部设置了薄弱底板。在强震作用下，当薄弱底板屈服时，建筑物会产生摇摆振动。本文采用非线性时程分析方法，对这种摇摆体系（底板屈服体系）与简单摇摆体系和基础固定体系的地震反应进行了对比分析。结果表明：1）底板屈服体系的层间剪力与简单摇摆体系的层间剪力相比有相当程度的减小;屋盖位移和轴力均小于简单摇摆体系。2)在一定的输入水平下，底板屈服体系的顶板位移和轴力与固定基础体系的顶板位移和轴力基本相似。结果表明，带薄弱底板的摇摆体系能有效地减小结构的地震反应。
We are developing the rocking structural systems that can reduce earthquake responses of buildings by causing rocking vibration. This paper aims to examine the effects of the rocking system. To cause rocking vibration under appropriate control, weak base plates are attached at the bottom of each steel column at the first story. When the weak base plates yield during a strong earthquake, the building causes rocking vibration. In this paper, the earthquake responses of this rocking system (the base plate yielding system) are examined comparing with those of the simple rocking system and the fixed-base system by nonlinear time history analyses. The results are summarized as follows: 1) Story shear forces of the base plate yielding systems are reduced as much as those of the simple rocking system. The roof displacements and axial forces are less than those of the simple rocking system. 2) The roof displacements and axial forces of the base plate yielding systems are almost similar to those of the fixed-base system under a certain input level. It is concluded that the rocking system with weak base plates can reduce earthquake responses of buildings.