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Application of Composite FRP Decks in Building Structures

Sadr Ara, Ali | 2015

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 48841 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Mofid, Masood
  7. Abstract:
  8. This study is devoted to the analysis and design of a recently proposed steel-FRP deck system. A methodology is being proposed to analysis the elastic behavior of the proposed deck. In this method the deck is modeled as an equivalent orthotropic plate which is constrained by rotational springs along its edges. An analytical model of the proposed deck is derived by using Rayleigh-Ritz method where the primary Rayleigh-Ritz shape functions are generated from orthonormal polynomials by using Gram-Schmidt procedure. The results of the proposed methodology show good agreement with finite element analysis results. In order to test the applicability of the proposed deck as buildings flooring system, some parameters of its behavior are also investigated. This important parameters include the critical local buckling load, the ductility of the proposed deck and vibration frequency of the floor system. The critical local buckling load of the upper face sheet of the proposed deck is calculated by using Rayleigh-Ritz method. The calculated critical buckling load is higher than the failure load of the upper face sheet so the deck is buckling safe. Vibration of the floor system is investigated and analyses indicate that the floor system meets the floors vibration design requirements. Failure and post-failure behavior of the proposed deck are also investigated. The post-failure behavior analysis results indicate that the introduction of steel into the proposed deck will yield to ductile behavior. Using steel can also lead to fast and easy installation which will result in reduction of labor cost
  9. Keywords:
  10. Finite Element Analysis ; Failure Analysis ; Rayleigh-Ritz Method ; Steel Fiber Reinforced Concrete ; Composite Structures ; Composite Decks

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