文档介绍：西南交通大学硕士研究生学位论文第l页摘要为兼顾粘弹性阻尼器和隅撑支撑二者的优点,使结构在地震作用下具有多道耗能减震防线,本文提出在隅撑支撑框架体系中设置粘弹性阻尼器,本文称该结构为粘弹性阻尼器隅撑支撑钢框架结构。与传统抗震体系相比粘弹性阻尼器隅撑支撑钢框架结构更具安全性和技术合理性。本文根据国内外的研究成果总结了隅撑的设计参数对结构抗震性能的影响,给出了粘弹性阻尼器隅撑支撑钢框架结构合理隅撑设计的建议。本文详细介绍了粘弹性阻尼材料的力学性能和耗能机理,介绍了普通粘弹性阻尼器的构造及本文粘弹性阻尼器的构造形式及特点;阐述了粘弹性阻尼材料的影响因素,给出了隅撑消能支撑的合理设定阈值范围。介绍各种粘弹性阻尼器计算模型的特点,给出了普通粘弹性阻尼结构的计算模型及本文粘弹性阻尼隅撑支撑的计算模型,分析了支撑刚度对阻尼器性能参数的影响,给出了支撑刚度远大于阻尼器等效刚度时粘弹性阻尼隅撑支撑的最终简化计算模型。为深入研究粘弹性阻尼器隅撑支撑钢框架结构的抗震性能,本文运用大型通用有限元分析软件是Ansys建立了纯钢框架结构、偏心支撑钢框架结构和粘弹性阻尼器隅撑支撑钢框架结构的二维简化对比模型,对其进行了动力特性分析和水平地震作用下的非线性动力时程分析。分析表明,粘弹性阻尼器隅撑支撑钢框架结构的耗能支撑既提高了结构的抗侧刚度又能在地震一开始便耗能, 大大的减小了地震作用下结构的位移响应和主体框架结构的内力,在地震作用下能很好的保护结构的主体框架,同时耗能结构在不同频谱特性的地震作用下均能较大幅度的减少结构的地震响应,场地适应性好。最后,在总结全文工作的基础上提出了本课题有待进一步解决的问题。关键词: 隅撑支撑;粘弹性阻尼器;耗能;非线性时程分析西南交通大学硕士研究生学位论文第1I页 Abstract Totake into account both the advantages ofviscoelastic damper and knee brace,make the structure have two energy dissipating and seismic response reducing defence lines inearthquake,the author propose that set viscoelastic dampers intheknee braced steel frame,which called knee braced steel frame with viscoelastic damper inthis pared with the traditional aseismic system knee braced steel frame with viscoelastic damper are more safety and technically reasonable. Based on the research results athome and abroad,the author sum up theaseismic effect factors ofknee brace andpresented reasonable design proposals ofknee braced steel frame with viscoelastic damper inthis paper. The author describe the mechanical properties and the dissipation mechanism of the viscoelastic material in detail, introduce the construction ofgeneral viscoelastic dampers andtheconstruction form andcharacteristics ofviscoelastic dampers used inthis paper,expound the effect factors of viscoelastic material,present reasonable threshold range of energy dissipation knee brace,introtuce the characteristics ofvarious viscoelastic damper mathematical formulas, present the mathematical formula ofgeneral viscoelastic damper and energy dissipation brace used inthis paper