隔震结构等代体系的力学模型

Mechanical Model of the Isolated Structure Equivalent System

隔震技术是最近二、三十年发展起来的一种适合我国国情的新型减震控制技术。它彻底克服了传统抗震结构“硬碰硬”式抗震设计方法的不足,采用“软化”结构,“以柔克刚”的方式通过在结构底部设置隔震层来避免、限制和吸收传入结构的能量。采用该项技术,可将8度地震反应减少50%以上,可使建筑物的建筑高度增高,层数增加,并使建筑物摆脱超烈度地震威胁。该技术因其简单、方便和可靠性好等优点,得到了工程界的广泛认可和长足发展,并在工程上具有广阔的应用前景。本文主要介绍隔震结构等代体系力学模型的建立过程。方法是先从一般单自由度剪切结构体系的力学模型出发,再在其上附加隔震结构体系的条件,最后导出隔震结构等代体系的力学模型,并对其进行验证,得出了较有意义的结论。

The isolation technology having been developed nearly 30 years, it is a new control technique of vibration reduction, which applying the situation of our country. The isolation technology is able to offset the limitation of the design method of the traditional seismic structure of ＂rigidity to rigidity＂, adopting the ＂flexibility to rigidity＂ to soften the structure and installing the isolated layer to escape, confine and absorb the earthquake energy absorbed by the structure. Using the isolation technique,the earthquake response are reduced 50% or up to in the 8 degree earthquake region. Therefore, the height and the layer of the structure are increased, and the threat of the super-intensity vibration of the building is shaken off. Based on the brief convenience and good security virtue, this method have been achieved the extensive recognition and quiet great development. So it have expansive foreground. In this paper, the process of building the mechanical model of the isolated structure equivalent system is chiefly introduced. The project is based on the general shear structure of single degree of freedom, added the term of the isolated structure to get the mechanical model of the isolated structure equivalent system and validated many significant conclusions.