Loading...
| Friend's email | |
| Your name | |
| Your email | |
| enter code | |
This page was sent successfuly
- Type of Document: M.Sc. Thesis
- Language: Farsi
- Document No: 52188 (09)
- University: Sharif University of Technology
- Department: Civil Engineering
- Advisor(s): Khaloo, Alireza
- Abstract:
- So far many systems have been proposed to withstand the lateral loads. For example in a concrete structure, the two concrete moment frame and moment frame with shear wall are commonly used.in the latter case, the shear walls are used to bear a large part of lateral forces.one of the disadvantages of this system is the high consumption of materials and lack of maneuver on their shape. The curved concrete shear wall is a new seismic system that, due to the curvature on the plan, will have the ability to provide the hardness, strength, and ductility required to withstand lateral loads. The goal of this project is to investigate the seismic performance of these types of walls against cyclic seismic loads. We expect that by examining the results of finite element analysis in ABAQUS and obtaining behavioral traits such as base shear –displacement hysteresis curve of the walls and their dependent parameters, including the maximum base Shear, as well as the study of ductility we will achieve the right understanding of the behavior of these type of walls. In this study, the goal is to examine the effect of thickness and different arch radius of the curved wall in a one story-one span frame and comparing the results with a flat shear wall in the same frame. This kind of comparing gives a good view of the efficiency and effect of using the curved shear wall. The study of the effect of thickness and different arch radius on this type of shear wall is important because it can reduce the use of materials and in the architectural design gives freedom of action for architects to design specific structures. Finally, by identifying the effect of these factors, we can find out the pros and cons of this system. In this study, the walls were first designed and with specific seismic conditions in the ETABS, and then they were transmitted to ABAQUS for finite element analysis.it should be noted that the walls were designed without any curve in ETABS, and we used the same amount of material for curved walls in the ABAQUS. The load was initially applied along the length of the shear wall on top surface, and finally applied in a vertical direction over the wall plate to obtain a complete view of the behavior. In the modeling, it was found that these structures were completely similar to the curvature angle of 20 ° and little variation was observed, and most of the changes and inconsistencies occurred from this angle onwards. So, with this approximation, it is possible to consider this central curvature angle as the critical angle that should always be taken into account for the design of curved shear walls. Regarding the results obtained, it can be seen that in general, the difference between the curvature angle of 10 and 20 degrees is slight variation in both the hardness, resistance and ductility. Therefore, it is possible to change the curvature without worrying at this interval, and we do not have to be worry about significant changes
- Keywords:
- Curved Shear Wall ; New Seismic System ; Finite Element Analysis ; ABAQUS Software ; Seismic Performance
Digital Object List
-
محتواي کتاب
- view
Bookmark