设置TMD,TLD控制系统的高层建筑风振分析与设计方法

本文结合我国现行风荷载规范，研究设置ＴＭＤ、ＴＬＤ控制系统的高层建筑风振分析与抗风设计的实用方法。首先，ＴＭＤ、ＴＬＤ系统的风振控制效果归并到了受控结构的内荷载折减上；其次，导出了满足舒适度标准的结构动侧移界限的相应的计算公式；第三，比较了ＴＭＤ、ＴＬＤ系统的控制效果以及分别对高层钢和钢筋混凝土结构的控制效果；最后，通过大量的计算和分析，分别确定了ＴＭＤ、ＴＬＤ系统参数的最佳取值区间以及参数之间的     

可调频调液柱型阻尼器振动控制参数研究

本文介绍了建筑结构利用可调频调液柱型阻尼器减小结构振动的控制系统,由于增设了频率控制装置,增加了ＴＬＣＤ的应用范围,文中阐述了利用ＴＬＣＤ系统减振的基本原理,确定了有关的影响参数并介绍了建筑结构利用ＴＬＣＤ进行振动控制的计算方法。     

WETLAND LOSS IN COASTAL LOUISIANA

ＷＥＴＬＡＮＤＬＯＳＳＩＮＣＯＡＳＴＡＬＬＯＵＩＳＩＡＮＡＭｅｎｇｌｏｕＷＡＮＧ１ａｎｄＤｏｎａｌｄＤｅａｎＡＤＲＩＡＮ２ＡＢＳＴＲＡＣＴＷｅｔｌａｎｄｓｉｎｔｈｅＭｉｓｉｓｓｉｐｐｉＲｉｖｅｒｄｅｌｔａｉｃｐｌａｉｎａｒｅｖａｌｕａｂｌｅｒｅｓｏｕ...     

AMD对非对称空间结构的抗震控制研究

以单层非对称（空间）结构为例，利用最优控制原理，探讨了最优控制力与受控结构反应随ＡＭＤ楼面安放位置和结构刚度分布的变化规律，讨论了该规律对输入地震波，权矩阵以及结构参数的敏感性，得到了一些有意义的结论，上述工作为研究多层非对称（空间）结构中ＡＭＤ楼面安放位置对控制效果的影响奠定了基础。     

调谐质量阻尼器系统控制结构地震反应的若干问题

本文研究调谐质量阻尼器（ＴｕｎｅｄＭａｓｓＤａｍｐｅｒ，以下简称ＴＭＤ）用作抗震结构的防御体系时的一些问题，包括ＴＭＤ在结构上的最佳位置，ＴＭＤ频率的最佳值，ＴＭＤ对非调谐结构振型的影响和ＴＭＤ参数的灵敏度分析，这些问题的解决将为研究设置ＴＭＤ的结构的抗震设计方法提供理论依据。     

利用调液阻尼器减振的结构控制研究进展

调液阻尼器（ＴＬＤ）是一种新型而有效的结构减振装置。本文论述了这方面研究及应用的进展情况，内容包括：一、ＴＬＤ的优越性和发展历史；二、理论计算模型；三、试验研究；四、ＴＬＤ在实际结构中的应用及测试；五、值得进一步探讨的问题。     

结构模型的AMD主动控制试验

本文介绍了作者研究设计的ＡＭＤ装置。采用五层钢框架１：４模型ＡＭＤ系统安装在模型的顶层,采用多种地震动加速度记录在哈尔滨建筑大学力学与结构实验中心的地震模拟振动台上进行了结构的ＡＭＤ主动控制试验。试验结果表明：ＡＭＤ主动控制系统对结构地震反应的控制是非常有效的。     

调谐质量阻尼器的优化分析

本文根据双自由度系统的随机反应，推导了设置调谐质量阻尼器的单自由度系统的运动方程，求出了白噪声基底输入时，设置ＴＭＤ的单自由度系统的反应方差与未设置ＴＭＤ的单自由度系统的反应方差之比，并采用模式搜索法对其进行优化方法，得到了ＴＭＤ系统的最佳减振效果以及相应的ＴＭＤ的参数取值，本文的分析表明，ＴＭＤ系统对减小白噪声基底输入的单自由度系统的随机反应是十分有效的。     

A STUDY ON VIBRATION REDUCTION IN HIGH-RISE STRUCTURES BY MULTI-TLDs

本文研究高层建筑利用调液阻尼器（ＴＬＤ）减小地震反应的方法。首先探讨了激励频率比、调谐频率比对减震效果的影响。在此基础上建立了具有不同ＴＬＤ设置方式的高层建筑体系的学模型和运动方程，首次提出了利用多个ＴＬＤ减小高层建筑多个振型的方法。最后通过数值算例验证了本文方法的有效性。     

中国西部强震的地表破裂规模与震级、复发时间间隔关系的研究

研究了我国西部走滑型地震的地表破裂长度Ｌ和位移量Ｄ与震级Ｍ＿ｓ和复发时间间隔Ｔ之间的定量关系。结果表明：震级Ｍ＿ｓ和复发间隔Ｔ不仅与Ｌ值有关，还同时与Ｄ值相关；乘积ＬＤ值可用来估算震级Ｍ＿ｓ，比值Ｄ／Ｌ与复发间隔Ｔ密切相关；对于Ｍ＿ｓ或ＬＤ值给定的地震，Ｄ／Ｌ值大（即Ｌ值小或Ｄ值大）的地震，有较长的复发间隔；当破裂长度Ｌ一定时，有较长复发间隔的地震，Ｍ＿ｓ或ＬＤ值较大；当位移量Ｄ相同时，Ｍ＿ｓ或ＬＤ值较大地震的复发间隔较短     

A METHOD OF ESTIMATING THE PARAMETERS OF TUNED MASS DAMPERS FOR SEISMIC APPLICATIONS

The optimum parameters of tuned mass dampers (TMD) that result in considerable reduction in the response of structures to seismic loading are presented. The criterion used to obtain the optimum parameters is to select, for a given mass ratio, the frequency (tuning) and damping ratios that would result in equal and large modal damping in the first two modes of vibration. The parameters are used to compute the response of several single and multi-degree-of-freedom structures with TMDs to different earthquake excitations. The results indicate that the use of the proposed parameters reduces the displacement and acceleration responses significantly. The method can also be used in vibration control of tall buildings using the so-called ‘mega-substructure configuration’, where substructures serve as vibration absorbers for the main structure. It is shown that by selecting the optimum TMD parameters as proposed in this paper, significant reduction in the response of tall buildings can be achieved. © 1997 John Wiley & Sons, Ltd.     

Seismic response control of a complex structure using multiple MR dampers： experimental investigation

This paper presents an experimental investigation on semi-active seismic response control of a multistory building with a podium structure using multiple magnetorheological (MR) dampers manipulated by a logic control algorithm. The experiments are performed in three phases on a seismic simulator with a slender 12-story building model representing a multi-story building and a relatively stiff 3-story building model typifying a podium structure. The first phase of the investigation is to assess control performance of using three MR dampers to link the 3-story building to the 12-story building, in which seismic responses of the controlled two buildings are compared with those of the two buildings without any connection and with rigid connection. The second phase is to investigate reliability of the semi-active control system and robustness of the logic control algorithm when 2 out of 3 MR dampers fail and when the electricity supply to MR dampers is completely stopped. The last phase is to examine sensitivity of semi-active control performance of two buildings to change in ground excitation. The experimental results show that multiple MR dampers with the logic control algorithm can achieve a significant reduction in seismic responses of both buildings. The proposed semi-active control system is of high reliability and good robustness.     

高层建筑利用悬吊质量摆的减震研究

本文研究了高层建筑利用悬吊质量摆的减振作用，首次提出了利用摆减小高层建筑多个振型反应的方法。文中给出了具有不同悬吊方式的摆－高层建筑结构体系的力学模型及振动方程，利用数值分析方法探讨了摆的不同悬吊方式及摆与结构的质量比等因素对结构地震反应的影响，给出了对于实际工程应用具有参考意义的结果。     

基于BP神经网络模型的多层砖房震害预测方法

针对传统的基于地震烈度的建筑物震害预测方法的不足,本文以地震动峰值加速度作为建筑物震害预测的地震动指标,结合几次大地震中多层砖房的震害实例,提出了一种基于BP神经网络模型的建筑物震害预测方法,模型的输入为反映结构抗震性能的各类物理参数,输出为给定地震动峰值加速度下建筑物破坏状态的概率。研究表明:基于BP网络模型的多层砖房的震害预测结果与震害实例的实际情况比较吻合,本文的思路和方法可推广于其他不同类型的建筑结构的震害预测。     

高层建筑地震反应全反馈主动TMD控制理论研究

本文应用最近提出的全反馈主动控制法对高层建筑地震反应进行了全反馈主动ＴＭＤ（调谐质量阻尼器）控制的理论研究，考虑了实时控制过程中控制力的时间滞后效应，并通过数值模拟分析了不同的反馈形式以及不同的时间滞后量对主动ＴＭＤ控制效果的影响。最后得出结论：对高层建筑地震反应实施全反馈主动ＴＭＤ控制，既能更有效地降低结构的位移反应和速度反应，又能大幅度地降低结构的加速度反应；且当控制力时间滞后量较大时，对主动     

主次结构减震特性研究

本文探讨了主次结构的减震特性以及土－结构相互作用对减震效果的影响，在一定条件下，次结构对主结构有减震作用，其减震效果与主次结构的刚度比和质量比、次结构的阻尼和输入地震动的特性有关，对于多层建筑，次结构既可能减小主结构的加速度，也可能减小其相对位移，对于高层建筑、则主要是减小主结构的相对位移，对于中软至弱地基条件，ＳＳＩ效应明显降低高层建筑的加速度反应；对于中等地基条件，ＳＳＩ效应显著降低次结构对高     

利用TLD减小高柔结构多振型地震反应的研究

本文提出了利多多个调谐液体阻尼器（简称TLDS）减小高柔结构多振型地震反应的方法,给出了TLD的布置方案和计算公式,通过钢框架模拟地震振动台试验和理论分析,验证了本文提出的方法的正确性．     

Viscoelastic coupling dampers (VCDs) for enhanced wind and seismic performance of high‐rise buildings

As high‐rise buildings are built taller and more slender, their dynamic behavior becomes an increasingly critical design consideration. Wind‐induced vibrations cause an increase in the lateral wind design loads, but more importantly, they can be perceived by building occupants, creating levels of discomfort ranging from minor annoyance to severe motion sickness. The current techniques to address wind vibration perception include stiffening the lateral load‐resisting system, adding mass to the building, reducing the number of stories, or incorporating a vibration absorber at the top of the building; each solution has significant economic consequences for builders. Significant distributed damage is also expected in tall buildings under severe seismic loading, as a result of the ductile seismic design philosophy that is widely used for such structures. In this paper, the viscoelastic coupling damper (VCD) that was developed at the University of Toronto to increase the level of inherent damping of tall coupled shear wall buildings to control wind‐induced and earthquake‐induced dynamic vibrations is introduced. Damping is provided by incorporating VCDs in lieu of coupling beams in common structural configurations and therefore does not occupy any valuable architectural space, while mitigating building tenant vibration perception problems and reducing both the wind and earthquake responses of the structure. This paper provides an overview of this newly proposed system, its development, and its performance benefits as well as the overall seismic and wind design philosophy that it encompasses. Two tall building case studies incorporating VCDs are presented to demonstrate how the system results in more efficient designs. In the examples that are presented, the focus is on the wind and moderate earthquake responses that often govern the design of such tall slender structures while reference is made to other studies where the response of the system under severe seismic loading conditions is examined in more detail and where results from tests conducted on the viscoelastic material and the VCDs in full‐scale are presented. Copyright © 2013 John Wiley & Sons, Ltd.     

带TMD的结构基于动力可靠性约束的优化设计

本文在运用复模态法求得多自由度带TMD结构随机地震响应解析解的基础上．采用基于动力可靠性约束的优化设计方法对TMD装置参数的优化取值进行了系统研究,以结构最大位移响应的期望值为目标函数,以TMD装置响应的动力可靠性为约束条件,运用罚函数法获得到TMD装置的优化设计参数．并给出了算例,从而建立了带TMD结构基于动力可靠性约束的抗震优化设计的一整套方法,本文方法也可用于基础隔震结构、带TLD减震结构以及带TMD和TLD抗风结构的优化设计。