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Tunnel form Building Analysis with Influence of Wall-Slab Interaction Performance

Safakar, Bita | 2015

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  1. Type of Document: M.Sc. Thesis
  2. Language: English
  3. Document No: 47209 (53)
  4. University: Sharif University of Technology, International Campus, Kish Island
  5. Department: Science and Engineering
  6. Advisor(s): Khaloo, Alireza
  7. Abstract:
  8. Tunnel form structures have been proposed in building industry during 40 years for financial saving, suitable structural performance and seismic behavior, and the possibility of performance in an industrial form; and they have also been brought up as one of the innovative technologies of construction in Iran for a couple of years. So far, these structures have been subject to study by the researchers less than frame structures. In comparison to the common structures, evaluating the behavior of these structures is analyzable as two or three-dimensional elements. In this research, the nonlinear behavior of these structures has been simulated and evaluated by using three-dimensional elements; therefore, nonlinear models and crack modeling by a method of plastic damage and nonlinear static and dynamic analysis in ABAQUS software have been used. At first, the used method was examined and verified by the previous researches’ results, that the results of verifications show the suitable attention in predicting the structure’s behavior. Having a capacity spectrum of the structure, the structure’s performance is studied by using methods based on drift (the method of the FEMA 440) for 3, 8, and 14-storey structures with the storey height of 3 and 3.5 m and a 7-meters span. The results of the analysis show that because of cyclic loadings in 8 and 14-storey structures, regarding ductility, a better behavior in comparison to 3-storey structure has been observed. With comparing the shear-stress cantors and a drift in the models with the same number of the floors and different floor heights, the amount of drift increases by a raise in the height; and also the amount of frequency period of the models and drift of the target are less than the amounts of the regulation (FEMA) which is a representative for regulative conservative designation. The final force and displacement in push-displacement graph of the analyzed models are the same as previous studies; and the behavior factor for these structures is calculated between 2 and 2.5. In fact, despite high stiffness and resistance in this system, limited nonlinear behavior may be reached
  9. Keywords:
  10. Strength Reduction Factor ; Behavioral Synthesis ; Nonlinear Analysis ; ABAQUS Software ; Structure Behavior Coefficient ; Tunnel-Form Structures ; Structure's Period

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