【作者】 陈静；

【导师】 瞿伟廉； 徐幼麟；

【作者基本信息】 武汉理工大学 ， 结构工程， 2003， 博士

【摘要】 针对带裙房高层建筑地震反应的鞭梢效应问题，以瞿伟廉教授和徐幼麟教授提出的“ER／MR智能阻尼器耦联的带裙房高层建筑结构地震反应的半主动控制”理论为起点，采取理论分析、计算机仿真和地震模拟振动台试验等研究手段，首次将基于泛布尔代数的逻辑控制方法引入结构控制领域，提出了半主动逻辑控制方法，包括单MR阻尼器半主动逻辑控制A、B、C和多MR阻尼器半主动逻辑控制D、E、F等六种。 2002-2003年在香港理工大学，首次进行了单／多MR阻尼器阻尼器耦联的带裙房高层建筑结构地震反应的数字仿真和地震模拟振动台系列试验。设计和制作了MR阻尼器耦联的带裙房高层建筑的试验结构模型，对结构模型的动力特性进行了理论计算与实时测试。开发了结构仿真系统并完成了结构地震反应的仿真试验。建立了振动台试验系统，开发了试验控制软件，提出了“自动数据分解法”及其软件实现，确定了试验结构模型反应的获取方法。提出了多MR阻尼器控制系统观测点的选取与传感器布置的一般原则，解决了实际试验工作中的问题。 地震模拟振动台试验结果表明：MR阻尼器的Passive off方式是外部电源被切断时的最低控制效果，能消除原结构地震反应的鞭梢效应，并使主楼和裙房的地震反应有一定的减少，六种半主动逻辑控制方法的减振效果比passive off方式更好，多MR阻尼器控制的效果优于单MR阻尼器。本文提出的半主动逻辑控制方法的主要优点是快速、简单，不需要控制对象和MR阻尼器的数学模型，能充分应用MR阻尼器的非线性，可靠性高，鲁棒性强。半主动逻辑控制方法不依赖结构体系模型和外界扰动影响，只依赖于逻辑控制算法自身，简化了分析过程，增强了控制效果，且对不同激励的适应性强，比目前广泛应用的部分最优控制算法的控制效果和鲁棒性好，是一种新的具有工程应用价值的结构智能半主动控制方法。更多还原

【Abstract】 The dissertation was finished under the financial support of the National Natural Science Foundation of China under NNSF-50038010 and The Hong Kong Polytechnic University through its Area of Strategic Development Programme in Structural Control under 1.31.37.A204 and Intelligent Building under 1.31.37.A234.Accoring to the whipping effect of the seismic responses of the tall building with a podium structure, the dissertation begins to research the semi-active control of seismic responses of tall building with podium structure using MR dampers based on the theory proposed by Qu W.L. and Xu Y.L. (2001), whose title is "semi-avtive control of seismic responses of tall buildings with podium structure using ER/MR damper. Analysis in theory, numerical simulation and experimental investigation on seismic simulator are employed to carry out the research. The logic control algorithm based on PanBoolean algebra was first introduced into structural control field. The semi-active logic control algorithm was proposed, which includes six kinds of semi-active logic control method. They are the semi-active logic control method A, B and C for single MR damper, the semi-active logic control method D, E and F for multiple MR dampers.A series of numerial simulation and experimental investigations on the seismic responses of the tall building with a podium structure using single damper /multiple MR dampers were first carried out on the seismic simulator in The Hong Kong Polytechnic University on 2002-2003. The tall building with podium structure model were designed and constructed. The dynamic characteristics of structure were calculated and tested. The simulation system was developed with which the seismic responses of the tall building with podium structure using MR single damper/multiple MR dampers were simulated. The experimental system on seismic simulator was set up and whose control roftware were developed. Analyzing Automatically data method was advanced and its roftware was designed. The methodology of the collecting responses of structure was obtained was proposed. In case of the control system with multiple MR dampers, the paper discusses the selection of observation point, and the general rules of sensors placement as to solve the problem in practical experiment.The experimental results on seismic simulator verify that the MR damper in the passive off mode provided the information on the minimum effectiveness of the damper if the external power was cut off, in which the seismic responsesof the tall building and podiun structure were reduced. When the MR damper worked in the six kinds of semi-active logic control methods, the seismic responses of the two building were further reduced compared with those when the MR damper worked in the passive off mode. The effectiveness and efficiency of the multiple MR dampers were higher than those of the single MR damper. The major advantages of the proposed semi-active multilevel logic control algorithms include the quick and simple control decision without requiring the accurate mathematical models for the control system and the MR damper, the full utilization of the nonlinear features of the MR damper, and the high reliability and robustness. The performance and effectiveness of the semi-active logic control algorithm could only depend on the control algorithm itself without structural system model and is not affected by external disturbance, in which the analysis is simplified and the control performance is enhanced. The semi-active logic control algorithm has the high adaptability for different kinds of ground excitations. The effectiveness and efficiency of the proposed semi-active logic control algorithm was higher than those of the clipped-optimal algorithm, which is one of the most popular control algorithms used at present for MR dampers. Moreover, it more adaptive to change in ground excitation. Hence, the semi-active logic control algorithm is a kind of new structural intelligent semi-active control algorithm in practical engineering.更多还原