STRUCTURAL BEHAVIOR ANALYSIS OF EARTHQUAKE RESISTANT BUILDING WITH SHEAR WALL AND OUTRIGGER

• Main Author: E Pinem (NIM : 150 03 026) ; M. Arfah A.K ( NIM : 150 03 036), Elias
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/6042
• Institution: Institut Teknologi Bandung

Abstract: <br /> <br /> <br /> <br /> <br /> In recent days, land area is becoming smaller and this condition requires vertical development of big cities. High building should be able to overcome the lateral loads from wind and earthquake. Shear wall is one of the best components to reduce the lateral deformation of a <br /> <br /> <br /> <br /> <br /> building. But, for a very high or slim building, shear wall is not effective because of thick dimension need. A new technology to overcome the lateral deformation is outrigger. Outrigger is a wall element that has functions like a beam that can reduce the lateral deformation of a high building. <br /> <br /> <br /> <br /> <br /> This final project has purposes to analyze the behavior of a high building with shear wall and outrigger. The analysis includes time period (T), load and material over strength factor (f1), structural over strength factor (f2), ductility, total over strength (0), reduction factor (R), stiffness (K), and deformation. <br /> <br /> <br /> <br /> <br /> In this final project, ten kind of buildings are designed. The first five models are designed as a twenty story building and the next five models are designed as a thirty story building. Each building is modeled with one variation of outrigger placement. So, for twenty story and thirty story, the variations for outrigger placement are no outrigger, outrigger at top, at top and a third, at top and two third, and every third of total height of building. The method to analyze the structural behavior is push over method. The analysis for every model is based on parameters explained above. <br /> <br /> <br /> <br /> <br /> The results show that the placements of outrigger significantly reduce the deformation of a building both roof displacement and story drift. The outrigger reduces the story drift and building displacement at the story where outrigger placed. On the contrary, the story with no <br /> <br /> <br /> <br /> <br /> outrigger placement shows larger displacement. So, outrigger is useful to increase the stiffness and to reduce the deformation of a structure in the form of story drift and roof displacement. Outrigger must be placed where outrigger can increase the stiffness effectively with the best structural behavior. The placement of outrigger should increase the stiffness more than weight. <br />