摘要
建立了群桩基础上结构系统的主动变刚度 (AVS)控制的地震反应分析方程 ,讨论了土 -群桩基础 -结构动力相互作用对主动变刚度控制减震效率的影响。数值计算结果表明 ,土层越软 ,AVS对桩基础上结构地震反应的控制效果越差。因此 ,对于软土地基上的结构实施 AVS控制时 ,在进行控制设计时一定要考虑土 -结构动力相互作用。
The analytic equation for seismic response of the structure controlled by active variable stiffness system, which is built upon a group pile foundation, is established. According to the results of numerical examples, the influence of the dynamic soil group pile structure interaction on the effectiveness of AVS of suppressing the seismic response of the controlled structure is discussed in this paper. The main conclusion in this study is that the soil structure interaction (SSI) leads to reduce the effectiveness of AVS control system. Therefore, SSI effect has to be considered in the design of structure AVS control system when the structural is settled upon soft soil site.
出处
《振动工程学报》
EI
CSCD
北大核心
2002年第3期332-336,共5页
Journal of Vibration Engineering
基金
国家自然科学基金资助项目 (编号 :5 97780 2 7)
