ANALYSIS OF SOFT STORY MULTISTORED STEEL STRUCTURE BUILDING

This paper focusing on soft storey  Multi-storey steel structure  buildings, These building  are becoming increasingly common and economical  in developed and developing countries with the increase in urbanization all over the world. Many of these buildings do not have structural walls at ground floor level to increase the flexibility of the space for recreational use such as parking or for retail or commercial use. these buildings which possess storey that are significantly weaker or more flexible than adjacent storey are known as soft storey buildings, these are characterized by having a story which has a lot of open space. while the un obstructed space of the soft story might be aesthetically or commercially desirable, it also means that there are less opportunities to install shear walls, specialized walls which are designed to distribute lateral forces so that a building can cope with the swaying characteristic of an earthquake. Soft-storey is also called as flexible storey. a large number of buildings with soft storey have been built in recent year. but it showed poor performance during past earthquake. soft story’s are subjected to larger lateral loads during earthquakes and under lateral loads their lateral deformations are greater than those of other floors so the design of structural members of soft stories is critical and it should be different from the upper floors. In this thesis “ analysis of soft-storey for Multi-storeyed steel structure  building in zone ” 2 “, applying the  analyse and explore the behaviour of soft-storey at different floor level of building under seismic load actions  respectively.