高位转换粘滞阻尼减震结构阻尼器合理阻尼系数研究  

Optimal damping coefficient of viscous damper in high-level transfer story structure

作　　者：吴从晓[1] 周云[1] 邓雪松[1] 吴从永[2] 

机构地区：[1]广州大学土木工程学院,广州510006 [2]广州大学建筑设计研究院,广州510405

出　　处：《振动与冲击》2011年第3期180-184,共5页Journal of Vibration and Shock

基　　金：国家自然科学基金项目(50678040);广东省自然科学基金团队项目(8351009101000001);广东省自然科学基金项目(8151009101000010)

摘　　要：根据《高层建筑混凝土结构技术规程》和《建筑抗震设计规范》对高位转换结构体系框支层的层间位移和结构等效侧向刚度的限制要求,采用等效侧向刚度计算方法,将高位耗能减震结构分解成框撑剪力墙结构和纯剪力墙结构,结合振型分解反应谱理论和线性粘滞阻尼减震结构等效阻尼比计算方法,推导出高位转换粘滞阻尼减震结构合理阻尼系数的计算公式。最后,通过算例分析得出,采用上述方法计算高位转换粘滞阻尼减震结构粘滞阻尼系数是可行的,该方法计算公式简单实用,可用于高位转换粘滞阻尼减震结构的初步设计。Based on the limitation demands of inter-story drift and equivalent lateral rigidity ratio of high-level transfer story structure in ＂Technical Specification for Concrete Structures of Tall Building and Code＂ for seismic design of buildings,the calculation model was so adopted that the high-level transfer story structure is decomposed into frame-shear wall structure below the transfer story and shear wall structure above the transfer story,keeping constant equivalent lateral rigidity ratio.Then,based on the above model,the model-superposition response spectrum theory and calculation method of equivalent viscous damping ratio of structure,the calculating formula for optimal damping coefficient of viscous damper in high-level transfer story structure with viscous dampers was derived.Finally,a sample structure was studied utilizing the above method,and the results indicate that the proposed formula is valid,simple and practical.

关 键 词：高位转换耗能减震结构 粘滞阻尼器 阻尼系数 

分 类 号：TU352.1[建筑科学—结构工程]