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Investigating Layout of Shear Walls in Tall Buildings with Non-Symmetrical Plan

Kabir, Minoo | 2013

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 44394 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Khaloo, Alireza
  7. Abstract:
  8. In tall buildings, seismic behavior depends on structural elements and their configuration. The usefulness of shear walls in the structural planning of multistory buildings has long been recognized. When walls are situated in advantageous positions in a building, they can be very efficient in resisting lateral loads originating from wind or earthquakes. Restriction in surrounding effects and the architectural design may contribute to have asymmetry in plan. In a number of papers, published mainly in the last decade, the analysis and design of shear walls has been studied. But just a few of them considered arrangement of shear walls to find the optimum layout. In the present study, analysis on two types of asymmetric plans with 23 stories is studied. Structural analysis is carried out by means of well-known computer program ETABS which is issued for the linear structural analysis of buildings subjected to static loads and dynamic earthquake loads by using response spectrum approach. The models are evaluated to work economically, then their structural behavior and their architectural restrictions are investigated. A comparison of structural behavior in terms of, the drift and inter-story drift of the structures, natural time period and the negative shear produced in the last story is done by arranging shear walls at different locations/configurations in the structural framing and is compared with that of bare frame system. The Efficient model is considered to consume the least amount of structural material to meet the stiffness requirements with the most useful area. The provision of shear walls preferably interconnected in mutually perpendicular directions forming a core, and the walls that are along each other with the shape of a plus (+) are found to be better than the other systems
  9. Keywords:
  10. Concrete Tall Buildings ; Shear Walls Arragement ; Asymmetric Plan

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