Loading...

Evaluation of Seismic Behavior of Concrete Moment ResistingFrames with Infilled Prefabricated Concrete Sandwich Panels

Andalib, Mohammad Saied | 2012

483 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 43575 (09)
  4. University: Sharif University Of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Rahimzadeh Rofooei, Fayaz
  7. Abstract:
  8. Wall systems are an essential part of the buildings and their capacity can be used in designing the structures. However, the seismic behavior of building systems with infilled walls has not been well understood. Implementation ofinfilled walls in the buildings without including them in the design process, changes the failure mechanism and the whole behavior of the structural system against earthquakes. On the other hand, there has been extensive research on rehabilitation of structures with infilled walls,or designing them as the main or one of the lateral load carrying systems against earthquake excitations. In this study, the existing 3-D Panel’s details as the infilled wall of a reinforced concrete frame system were modified for its possible application as a lateral load carrying element.As a first step, the numerical models of a number of experimentally tested 3-D panel systems under in-plane and out of plane loadings were prepared for verification purposes,using commercial finite element software. The similarity of the obtained results from the numerical models and those of the experiments showed the sufficiency of the prepared numerical models for parametric studies. Subsequently, the effects of different parameters such as the gap between 3-D panel and the columns and the existing friction between the panel and frame on the performance of the 3-D panel system were studied. The infilled frames with the gap between 3-D panel and the column were designated as Traditional Infilled Frames, while those without gap named as No-Gap-Infilled frames. Then, inserting a gap along a diagonal direction within the middle part of the infilled 3-D panel, a so called controlling gap, its effect on the performance of the wall system investigated. The results of this study show that by providing suitable connection between panel and beam, the resistance of No- Gag-Infilled frame is more than the Traditional Infilled frame with less energy dissipating capacity. Furthermore, according to the fact that the columns experience very low damage in both of the models, it can be concluded that the seismic performance of No-Gap-Infilled frame is better than the Traditional one. As the connection between beam and panel gets weaker or the effect of the column in transmitting lateral forces increases, the stiffness of the structure tends to decrease, the columns experience more damage and the structure delays in reaching its maximum strength. Strengthening the panel to beam connection in the No-Gap-Infilled frame improves its seismic performance without any need to use the controlling gap in the middle part of the panel. But with weakening the beam to panel connection in the traditional infilled frame, the two surfaces slide on each other and shear failure occurs at the end of the columns. Finally, applying the controlling gap in the traditional infilled frame distributes the force more uniformly in the panel and decreases the equivalent damping of the structural system
  9. Keywords:
  10. Infill ; Moment Resisting Rainforced Concrete Frame ; Prefabricated Three Dimensional Wall Panel ; Gap

 Digital Object List

 Bookmark

No TOC