【作者】 任晓亮；

【导师】 方诗圣；

【作者基本信息】 合肥工业大学 ， 工程力学， 2010， 硕士

【摘要】 调谐液体阻尼器(Tuned Liquid Damper ,TLD)作为一种低造价高性能的被动减震装置,是土木工程抗震领域的研究热点之一。由于地震荷载以及TLD减震机理的复杂性,结构TLD减震设计理论及方法中仍有许多问题急待完善。调谐质量阻尼器(Tuned Mass Damper ,TMD)是高层建筑与高耸结构震动控制中应用最早的结构被动控制装置之一。因此,TMD系统较早得到结构工程专家的认可,被用来控制结构的风振和地震反应。为此,本文以浅水TLD作为分析对象,在明确其减震基本原理的基础上,研究了TLD减震的实用设计方法及工程应用,并且着重研究TLD和TMD混合系统在减震方面的设计方法及其工程应用。主要的工作内容包括:(1)分别建立TLD系统和TMD系统的运动方程,并且通过分析建立了TLD和TMD混合系统的运动方程。(2)通过研究,给出TLD系统和TMD系统的影响参数,通过对比,确定这些参数对结构减震的作用。(3)以结构模态在安装TLD后仍近似正交的假定为前提,采用模态叠加思想,将结构多模态TLD减震控制简化为一组单自由度结构的TLD减震控制问题。通过对单自由度结构-TLD系统的减震机理研究及数值分析,提出了实用的TLD参数优化设计方法,同时给出了最优TLD -结构系统等效阻尼比计算方法。算例分析表明,TLD实用设计方法适用于结构TLD减震分析,且方法简明,有利于工程应用。(4)为了发挥TLD低价高能的优点,提出了TLD与TMD混合控制的结构减震方案。算例分析表明,混合控制方案适用于高层结构,在整体控制过程中,充分发挥了TLD的减震作用,达到了减震性能高、造价低的结构抗震设计目标。(5)以某工程实例为背景,给出了TLD和TMD系统减震优化设计的具体实现过程。(6)总结了本研究的成果与意义,提出了有待进一步研究和解决的问题。更多还原

【Abstract】 The tuned liquid damper (TLD) is a type of passive control devices with its advantages of low cost and high performances. It is one of the study focuses on the field of aseismic research for civil engineering. Because of the complexity of earthquake loading and the principles of TLD, there are still many problems of the theories and design methods of TLD being to be solved urgently using for suppressing seismic responses of structures. TMD is the one of earliest structure passive control devices to be applied for withstanding the high-rise construction tall and erect in the structure vibration control. Therefore, the TMD system obtains the structural engineering expert’s approval early, used for control the wind vibration and the earthquake responded of the structure. So, TLD filled with shallow water is analyzed. The emphasis on this dissertation is studying the optimal design method of TLD and TMD its application for practical engineering. The main achievements are described as follows.(1)Establishes the dynamic equation of the TLD system and the TMD system separately, and this paper has established the dynamic equation of the TLD and the TMD hybrid system through the analysis.(2) Through the study, gives the TLD system and the TMD system’s influence parameter, by means of the contrast, makes certain these parameters to the structural damping function.(3) Based on the assumption of the decoupling of structure’s mode, the problem of multiple-degree- of - freedom ( MDOF ) -TLD system is simplified to a set of single-degree - of -freedom ( SDOF) - TLD system problems by the method of mode superposition . The practical optimal design methods of TLD for SDOF system are put forward through studying the aseismic principles of SDOF-TLD system. Meanwhile, the methods to assess the equivalent damping ratio of SDOF-TLD system is given too. Numerical examples show that the optimal design method can be applied to the analysis of TLD for suppressing seismic responses of structures.(4) The hybrid control scheme of TLD and TMD is studied. Numerical analysis shows that hybrid control method has the satisfied control performance and is applicable to the tall buildings. Meanwhile, it can save the cost of engineering.(5) The detail of TLD’s optimal design for practical structures is described by the analysis of a practical engineering.(6) Summarized the research results in this thesis. The unsolved problems and further research work are mentioned.更多还原