附加黏滞阻尼器减震结构实用设计方法研究  

Practical design procedure for a energy-dissipated structure with viscous dampers

作　　者：翁大根[1] 张超[1] 吕西林[1] 彭林海[1] 徐斌 丁孙玮 周红卫 

机构地区：[1]同济大学土木工程防灾减灾国家重点实验室,上海200092 [2]上海材料所,上海200092

出　　处：《振动与冲击》2012年第21期80-88,共9页Journal of Vibration and Shock

基　　金：国家科技支撑计划重点项目(2009BAJ28B02);中国工程院重大咨询研究项目(2010-ZD-4);科技部国家重点实验室基础研究项目资助(SLDRCE10-D-01);上海市科学技术委员会基金资助(10DZ2252000)

摘　　要：黏滞阻尼器近年来在结构减震控制中得到广泛应用,但面向黏滞阻尼减震结构的设计方法仍有待补充和完善。基于此,探讨和提出了一种针对附加黏滞阻尼器减震结构的实用设计方法,主要内容包括分析了黏滞阻尼减震的基本原理和力学模型,从主体结构与附加消能部件分开设计的思路着手给出了具体的设计流程和内容框架,列出了消能部件方案设计及性能参数配置的计算公式。最后,结合一个工程实例,引入日本JSSI Manual中黏滞阻尼减震结构设计方法进行了对比分析和论证,结果表明该实用减震设计方法对于结构各楼层地震响应控制得比较均匀,如此有助于改善结构薄弱层状况,而通过减震结构的强度、变形验算也表明该实用方法能很好地契合现有抗震设计规范,可应用于黏滞阻尼减震结构设计中,以满足不同地震风险下的减震控制目标和需求。In recent years, fluid viscous dampers are widely applied to structural vibration-reduction and control, however, the current damping design procedures are still needed to be further improved and supplemented for practical design and engineering application of viscous damping structures. Pursuant to this, a practical design procedure for damped structure with fluid viscous dampers was proposed and discussed, it contained the analysis of basic principle and mechanical model of viscous damping structure, the discussion on specific designing process with the thought of designing the main structure and energy-dissipating components respectively, and the calculating formulation about performance parameter design of viscous dampers-braces, etc. In the end, with the combination of a practical multi-story RC frame to be retrofitted with viscous dampers-braces, the design method for viscous damping structures in JSSI Manual was introduced to make comparative analysis and proof, it was shown that the practical design procedure proposed here has a better control effect and well-distributed performances for the whole structure, so that it is helpful for improving the weaker storey in the structure. Moreover, the case study also indicated that this practical design procedure can conform with China＇s current design codes, and therefore it can be applied to engineering design for satisfying various demands and objectives at different earthquake risk levels.

关 键 词：黏滞阻尼器 消能减震 设计方法 黏滞阻尼减震结构 等效阻尼比 

分 类 号：TU352.1[建筑科学—结构工程]