考虑支撑刚度及连接间隙对非线性黏滞阻尼器减震效果影响研究

发布时间：2018-07-03 19:06

  本文选题：非线性黏滞阻尼器 + 减震效果　； 参考：《昆明理工大学》2017年硕士论文

【摘要】：随着结构控制技术在土木工程领域中的应用及控制理论的逐渐发展,消能减震技术做为一种目前工程中最为常用被动控制方法,不断地应用到国内实际工程中,并取得了显著地减震效果。而黏滞阻尼器是目前减震技术中最为常用的一种.减震耗能装置,具有良好的耗能能力和耐久性能。但是,由于黏滞阻尼器在国内发展时间尚短,其从生产、质量控制到实际应用都未形成一套成熟的系统控制。在国内实际减震工程中,阻尼器的使用及相关设计规范也未得到完善,而阻尼器在实际使用中一旦失效,可能会导致很多预想不到的副作用。因此本文就非线性黏滞阻尼器减震效果影响因素进行研究,并对连接间隙对其耗能影响进行了探究。在研究非线性黏滞阻尼器减震影响参数时,先分别研究了 α=1(线性)及α=0时的情况,其后,采用线性插值得到非线性黏滞阻尼器对应的减震效果关系式,并绘制了 0≤α≤1时相应的减震效果与影响因素关系曲线图。且经过分析,该方法简洁,且和以往相关方法具有较好的吻合度。黏滞阻尼器性能试验及ETABS软件分析表明,连接间隙对黏滞阻尼器耗能的影响可以通过滞洄曲线图形的变化表示。最后根据非线性黏滞阻尼器耗能计算公式及考虑连接间隙时滞洄曲线图形的简化计算,推导出耗能等效算法,得到等效黏滞阻尼系数。通过以上研究,最终得出非线性黏滞阻尼器减震效果影响参数的大致取值范围及等效阻尼系数算法。
[Abstract]:With the application of structural control technology in the field of civil engineering and the gradual development of control theory, energy dissipation and seismic absorption technology, as one of the most commonly used passive control methods in current engineering, has been continuously applied to practical projects in China. And achieved remarkable effect of earthquake absorption. Viscous damper is one of the most commonly used dampers. Shock absorber and energy dissipation device, with good energy dissipation capacity and durability. However, due to the short development time of viscous damper in China, it has not formed a mature system control from production, quality control to practical application. The use of dampers and the relevant design specifications are not perfect in the actual earthquake absorption projects in China. However, if the dampers fail in practical use, they may lead to many unexpected side effects. In this paper, the influence factors of nonlinear viscous damper are studied, and the influence of connection gap on its energy dissipation is discussed. In the study of the influence parameters of nonlinear viscous dampers, the case of 伪 1 (linear) and 伪 = 0 are studied respectively, and then linear interpolation is used to obtain the relationship between the damping effect of nonlinear viscous dampers and that of nonlinear viscous dampers. The curves of the relation between the damping effect and the influencing factors of 0 鈮，

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