高效耗能摩擦阻尼框架随机地震响应及减震分析  

RANDOM SEISMIC RESPONSE AND DAMPING ANALYSIS OF FRAME STRUCTURES WITH HIGH-EFFICIENCY ENERGY-CONSUMING FRICTION DAMPERS

作　　者：张敏[1,2] 马玉超[1] ZHANG Min;MA Yuchao(School of Civil Engineering and Architecture,Guangxi University of Science and Technology,Liuzhou 545006,Guangxi,China;School of Civil Engineering,Jiangxi Science and Technology Normal University,Nanchang 330038,China)

机构地区：[1]广西科技大学土木建筑工程学院,广西柳州545006 [2]江西科技师范大学土木工程学院,南昌330038

出　　处：《力学与实践》2024年第4期776-785,共10页Mechanics in Engineering

基　　金：国家自然科学基金项目(51368007)资助。

摘　　要：利用随机振动理论对高效耗能摩擦阻尼框架结构小震作用位移正则坐标均方差进行求解,研究了在改进Kanai-Tajimi功率谱地震激励下摩擦阻尼力对上述框架结构位移正则坐标均方差的影响;分析了摩擦阻尼器启动耗能的条件;还研究了小震作用下高效耗能摩擦阻尼框架结构的等效阻尼比。在此基础上,研究高效耗能摩擦阻尼框架结构对巨震作用的减震效果。研究表明,高效耗能摩擦阻尼器可以克服传统摩擦阻尼器的弱点,能够兼顾小震、大震与巨震作用对结构的减震耗能。The random vibration theory is used to solve the mean square deviation of the displacement regularization coordinate of the frame structure with high-efficiency energy-consuming friction dampers under small earthquake action.The influence of friction damping force on the mean square deviation of the displacement regularization coordinate of the above frame structures under improved Kanai-Tajimi power spectrum of seismic excitation is studied.The conditions for starting energy consumption of friction dampers are analyzed.The article also studies the equivalent damping ratio of the frame structure with high-efficiency energy-consuming friction dampers.On this basis,the damping effect of the frame structure with high-efficiency energy-consuming friction dampers on giant earthquakes is studied.The study shows that the high efficiency energy dissipation friction damper can overcome the weakness of the traditional friction damper,and take into account the small earthquake and giant earthquake action on the seismic energy dissipation of the structure.

关 键 词：高效 阻尼器 框架 地震 方差 

分 类 号：TU375.4[建筑科学—结构工程]