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Application of Intensifying Wind Analysis in Time History Analysis of Tall Buildings

Davari, Sina | 2020

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 53576 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Esmail Pourestekanchi, Homayoon
  7. Abstract:
  8. The wind phenomenon has always caused significant damage to structures. Suffering from extensive damage and loss over the years has led researchers to establish the novel science of wind engineering. Wind engineering references introduce wind as an intricate dynamic and random phenomenon and encourage engineers to familiarize themselves with its exact effects on structures by utilizing the latest methods of structural analysis, such as time history analysis. In this research, the idea of a new method for time history analysis of tall buildings against the wind is proposed. In this method, the purpose is to determine the responses of the structure against any wind of any intensity and return period by performing a single analysis. The purpose is achieved by generating and utilizing some special functions called intensifying wind records. The aforementioned process paves the way for a comprehensive and accurate assessment of the structure, and for performing the efficient performance-based design which is developing at a galloping pace in recent years.In order to perform the wind time history analysis, it is indispensable to generate and assign wind speed records to the structure. After performing a time-consuming process of artificially generating and assigning unique wind records to each node of the tall structure in the software and performing a time history analysis under the simultaneous effect of all of them, the response of the structure subjected to a specific wind with a specified mean speed and return period will be obtained. It goes without saying that in the performance-based wind design for instance, determining the responses and behavior of the structure under the influence of various winds with different return periods is required. In this case, there is no other way but to repeat the whole illustrated process. In order to solve this problem, the present study assesses wind records through a creative viewpoint and by combining several complicated methods of wind record production obtains intensifying wind records, simplifies the difficult problem of record generation
  9. Keywords:
  10. Time History Analysis ; High Buildings ; Wind Load ; Intensifying Wind Analysis ; Intensifying Wind Record ; Wind Effect on High-Rise Buildings

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