Loading...

Analytical Problems of Prestressd Post-tensione Concrete Slabs

Javanmardi, Mohammad Reza | 2010

706 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 40337 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Khaloo, Alireza
  7. Abstract:
  8. Recently in civil engineering prestressed concrete slab applications is increasing, and typically results in overall economy and provides satisfactory structural performance. In The present work, two-way prestressed concrete slabs have been considered and during designing process with the ACI-2005 code and due to economic plan, prestressed slabs were studied in transfer, service and final conditions. ACI code insists that two-way prestressed slabs shall be classified as class U (without cracking) that means section must be untracked in all conditions (code reference 18.3.3). In addition, two-way prestressed slabs must be prestressed in both directions for 100% of load, and this means that we assumed one way behavior for this type of slabs. In this study, two-way prestressed slabs with various spans under different loading have been designed based on ACI code. Then, using isotropic damage plasticity model for concrete, through finite element method and using nonlinear algorithm, numerical simulation of prestressed slabs were simulated. By using damage plasticity model, it is attempted to regard the growth and coalescence of microdefects besides the plastic deformation in material and using these models for materials such as concrete that cracking and failure has a important role in material degradation, leads us to better numerical simulations. Numerical simulation shows that some laws of ACI code are not satisfied.


  9. Keywords:
  10. Finite Element Method ; Numerical Simulation ; Concrete Slabs ; Prestressed Concrete ; Plastic Deformation ; Damage Plasticity Model

 Digital Object List

  • محتواي پايان نامه
  •   view

 Bookmark

No TOC