M.Sc. Tezi Görüntüleme
In structural design, the internal forces, which is considered as a basic element for cross section analysis of the loading bearing system, are obtained from the solution models in which the effects of fill walls are ignored. Although those fill walls have been positioned as secondary member of the structure, they can effect the behaviour of the frames, they are in, importantly and consequently, they may change the behaviour of the structures directly. The other subject that is ignored in general design procedure, is that the base storey height may be various in multi-storey structures. Thus; base stroreys, whose rigidity is decreased because of various reasons and which is designed higher than the normal storeys, can be considered as soft storey or weak storey.In this research, the effect of different base storey heights and existence of fill walls on the behaviour of structure is investigated. Those effects are ignored in general design procedure. Especially, the reasons of different cross sections which are formed at base storey level are examined. Thus, the height of fill walls are gradually increased in order to observe short column formation at base storey level. On the other hand, soft storey formation is observed by increasing base storey heights.
Having the idea that the number of storeys of the structure may cause both undesirable cases, the applications at base storey levels are applied to the structures having different number of storeys.Since fill walls are not used correctly and regularly, the behaviour of the structures under horizontal forces are effected negatively. Besides, increasing the base storey height causes soft storey irregularity.
In this study, it is concluded that the main factor that causes short column formation and soft storey formation is the rigidity.
Key Words: Fill Wall, Short Column, Soft Storey, Modal Analysis