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墨尔本论文-建筑结构振动控制理论与计算方法

论文作者:英语论文网论文属性:职称论文 Scholarship Papers登出时间:2012-02-17编辑:kalila点击率:4203

论文字数:5524论文编号:org201202171010226975语种:英语论文 English地区:澳大利亚价格:免费论文

关键词:建筑结构高层建筑结构主动控制半主动控制频率控制地震响应风振响应智能控制迭代学习控制Building structureTall building structureActive control

摘要:墨尔本论文-建筑结构振动控制理论与计算方法-土木工程结构中的房屋建筑作为重要的社会基础设施,是现代社会的组成部分。传统意义上,这些结构是设计成用来抵抗静荷载的。然而,土木工程结构同样承受着各种各样的动荷载,包括风、浪、地震和车辆荷载。这些动荷载会引起严重且持续的振动,对结构和结构构件以及居住者均有害,这些结构需要保护的内容可能涉及使用的可靠性,居住者的舒适度以及结构的耐久性。

墨尔本论文-建筑结构振动控制理论与计算方法-Buildings, as a part of the civil structures, are important infrastructure and an integral part of the modern society. Traditionally, these structures were designed to resist static loads. Civil structures are, however, subject to a variety of dynamic loadings, including winds, waves, earthquakes, and traffic. These dynamic loads can cause severe and sustained vibratory motion, which can be detrimental to the structure, its material contents and human occupants. The extent of protection required by these structures may range from reliable operation and occupancy comfort to structural survivability. Improving the buildings’seismic performance and tall building wind-resistance performance is one of the basic measures to reduce dynamic functions damage and strengthen regional security, which is currently an important subject in the civil engineering. Structural vibration control is a new technique domain that relates to many subjects. Structural vibration control can improve the reaction and reduce the harm to the structure available under the dynamical functions such as wind and earthquake etc. It strengthens the anti-vibration and anti-disaster ability of the structure. After decades of development, building structure vibration control has been proven by theory and practice to be an effective means to withstand earthquakes and wind damage. Therefore, it will be a worthwhile and great project to study the reasonable and practicable control measures to protect the building structure against earthquake damage and protect tall building structures against wind vibrations on the basis of understanding the building dynamic response characteristics.With the social progress and scientific development, inhabitants call for a better occupancy vibration environment. Passive vibration control can’t satisfy the need and exposes its limitation. Active control becomes a new important way because of its effectiveness and adaptability. However, active vibration control system needs a great sum of power and many actuators, which is hard to be realized in the practice.

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The basic principles of semi-active vibration control is the same with those of active vibration control, but semi-active control makes use of the relative deformation or relative velocity in structure recycle movements, which needs only a small amount of power to achieve the optimal active control force. Symbolized by fuzzy control、neural network control and genetic algorithm, the intelligent control has become a leading field in the study of structure vibration control. Structure intelligent vibration control is free from accurate model of system and uses intelligent algorithms to determine the relationship between input or output feedback and control gains.

Run by little power, the intelligent damper made of intelligent magnetorheological fluid materials can achieve optimal active control force.Focused on the object of building structure, this paper employs modern control theory and intelligent control theory to conduct the theoretical analysis and algorithms for building structure vibration control. Firstly, the paper uses active control methods to reduce the seismic response and explore its key problems against earthquake. Secondly, based on the active control, the research concentrates on semi-active control methods. Thirdly, the paper discusses the application of fuzzy control and genetic algorithm in structural vib论文英语论文网提供整理,提供论文代写英语论文代写代写论文代写英语论文代写留学生论文代写英文论文留学生论文代写相关核心关键词搜索。

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