村镇建筑带限位装置滑移隔震系统的滞回耗能影响因素分析

Influencing factors analysis of hysteretic-energy dissipation of slide-limited friction base-isolated system for rural buildings

以村镇建筑为研究对象,以能量法为基础,提出了滞回耗能比的概念,计算了结构在地震作用下的滞回耗能比,探讨了系统参数对滞回耗能比的影响,以此来分析带限位装置滑移隔震系统的村镇建筑的隔震层滞回耗能特性。研究表明:摩擦系数对滞回耗能比影响显著,刚度比、上部结构固有周期和限位装置的第2阶段刚度系数对滞回耗能比有一定的影响,而质量比和限位装置的屈服位移对滞回耗能比影响不显著。

In order to analyze the feature of hysteretic-energy dissipation of slide-limited friction base-isolated system for rural building , the concept of hysteretic-energy dissipation ratio was introduced, the hysteretic-energy dissi- pation ratio of structure subjected to seismic ground motions was calculated and the influence of system parameters on hysteretic-energy dissipation ratio was discussed to analyze hysteretic energy dissipation characteristics of rural building with slide-limited friction base-isolation system. Researches show that the friction coefficient has a signifi- cant impact on hysteretic-energy dissipation ratio, and the stiffness ratio, the natural period of superstructure and the stiffness coefficient in the second stage of the slide-limited system have a certain influence on hysteretic-energy dis- sipation ratio while the mass ratio and the yield displacement of slide-limited syslem have no ramarking influence on hysteretic-energy dissipation ratio.