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The Towering Structure Of The Wind Tunnel Test Model Design Study

Posted on:2007-03-16Degree:MasterType:Thesis
Country:ChinaCandidate:P C DingFull Text:PDF
GTID:2192360185481582Subject:Bridge and tunnel project
Abstract/Summary:PDF Full Text Request
High-rise structure is somewhat different from others because of being high, light, soft and slim . It has been widely used in some related fields such as power transmission, communication, broadcasting and television system. Due to its characteristic of shape, the dominating load of high-rise structure is wind load. With the growth of demand and progress of technique, it has been developed to be much higher, lighter and softer which increases its sensitivity to wind load.For the purpose of studying the vibration characteristics speed, a model of tour tower was tested in of high-rise structure under high wind tunnel. This paper basing on Hang Zhouwan tour tower and platform, researches the model.First, this paper researches the wind pressure model such as: model dimension, model material and setting survey points. The force measurement model also has been designed by some factors, such as: the choices of strain balance and material, model segment designing.Because the greatest internal force and displacement of every section when the structure is under the dynamic loads are nearly correlative with the frequencies and the vibrational formats when the structure is under the natural vibration, seeking natural vibration frequencies and modes is the precondition and base to carry through every dynamic analysis. In the thesis, on the basis of existing data collected of dynamics, taking the example of Hang Zhouwan tour tower, establish 3-D finite element model of it with software ANSYS, and calculate and analyze its natural vibration frequencies, and analyze the effects of natural vibration feature of the differences of structure parameters. Some factors, such as with or without soil-pile dynamic interaction, soil on pile by differences orientation, including the influence of TMD.In order to insure the credibility and trueness of the test result,...
Keywords/Search Tags:tall and slender structure, wind tunnel test, model design, finite element method, natural vibration
PDF Full Text Request
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