电梯试验塔的风振响应分析

发布时间：2018-01-04 12:29

本文关键词：电梯试验塔的风振响应分析　出处：《合肥工业大学》2017年硕士论文　论文类型：学位论文

【摘要】：随着社会的发展,作为垂直交通运输工具,电梯被人们广泛使用。同时,电梯的安全性也受到人们的关注。于是,电梯试验塔便应运而生,它可以对生产商的产品有一定的测试,对于安全也有一定的保障。电梯试验塔是一种新型的结构,属于高耸结构。高耸结构有高度较高、外形细长、刚度小的特点。荷载作用中对结构最有影响的是风荷载,随着结构高度的增加,结构会越柔,对风越敏感。因此,电梯试验塔的风振响应分析对于结构的安全性是至关重要的。本文以某电梯生产商的电梯试验塔为研究对象,分析结构的动力特性,对风荷载进行等效的静力分析以及动力响应的分析,主要工作如下:第一、关于风的概念,以及建筑物抗风理论的研究和分析方法。利用有限元分析软件ANSYS,根据结构的特点,建立适当的分析模型。对结构进行模态分析,从而得到结构的动力特性,例如结构的固有频率、振型等基本动力参数。第二、等效静力风荷载的基本方法以及原理。分析不同的风向角度下风作用在结构上,得到的位移以及应力的结果;同时选取两种不同的规范,对比计算结果,分析计算方法的不同以及造成结果不同的原因,从而得出结论。第三、结构的动力响应分析,主要是风成份中的脉动风的风速时程模拟。在线性滤波法和谐波叠加法中选择线性滤波法模拟风速,并将其功率谱密度与目标谱进行对比,从而验证模拟的正确性。将模拟得到的风速时程转化为风荷载时程。建立两种有限元模型,一种是不考虑基础,一种是考虑基础。在两种模型的基础上将风荷载分别加载到模型上,得到位移响应、加速度响应和力的响应。对比两种模型的响应结果,为结构的抗风分析性能提供一定的理论支持。
[Abstract]:With the development of society, as the vertical transport, elevator widely used. At the same time, the safety of the elevator has attracted much attention. So the elevator testing tower came into being, it can on the manufacturer's products have a certain test for safety, also have a certain degree of protection. The elevator test tower is a kind of new the structure, which belongs to the towering structure. The towering structure has higher height, slender shape and stiffness characteristics of small loads on the structure. The most influential is wind load, with the increase of the height of the structure, the structure will be more flexible, more sensitive to wind. Therefore, the analysis is very important for the safety of the structure response of the wind vibration of elevator testing tower. The elevator elevator manufacturer's test of a tower as the research object, analysis the dynamic characteristics of the structure, the equivalent static analysis and dynamic response analysis of wind load, the main results are as follows: A concept about the wind, wind and building the theoretical research and analysis method. Using finite element analysis software ANSYS, according to the structure characteristics, establish the appropriate analytical model. The modal analysis of the structure, so as to obtain the dynamic characteristics of the structures, such as the structure of the natural frequency, vibration mode and other basic dynamic parameters. Second, basic the method of the equivalent static wind loads and different wind angle principle. Analysis of wind effects on the structure, the displacement and the stress; and selecting two different specifications, calculation results, analysis and calculation methods and different result for different reasons, and draw a conclusion. Third, the structural response analysis power is mainly wind wind components in the process of simulation. In the linear filtering method and harmonic superposition method in the linear filtering method to simulate the wind speed, and the power spectral density and mesh Standard spectra were compared to verify the correctness of the simulation. The simulation results of the wind speed time history transformed into wind load time history. The establishment of two finite element models, one of which is not to consider the foundation, a foundation is considered. Based on the two models on the wind loads are applied to the model, get the displacement in response, acceleration response and force response. Results of the two models in response to provide certain theoretical support for the structure of the wind resistant performance analysis.

【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU973.213

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