outrigger structural system journals

They are particularly designed to control drift in tall buildings due to wind and seismic forces. The basic modeling technique and assumptions are made by “ETABS” Program, in 3-D modeling. This work presents the performance analysis of such outrigger structural system with dampers. American Journal of Engineering Research 2(8): 76 – 89 . Despite the on-going use of outrigger structural systems around the world, a formal seismic design procedure for outrigger system is missing. As building increases in height there is effect of wind and earthquake forces, to increase stiffness of building against lateral load additional structural system such as belt truss and outriggers is required. INTRODUCTIONThe outrigger structural system is one of the horizontal load resisting systems. It has used outriggers to spread out the forces to these 8 mega columns so that the building can take advantage of the T-C couple in the columns. For high-rise buildings, particularly in seismic active zone or wind load dominant. Submitted By: Neeraj Agrawal. The outrigger structural system is one of the lateral loads resisting system. The influence of second outrigger system is studied and important results are tabulated and drawn. Introduction. 3. drifts. The outrigger structural system is one of the most widely used lateral load-resisting structural systems for high-rise buildings. For Design considerations are made according to Indian Standards. The stiffness and location of the Belt truss system. OUTRIGGER STRUCTURAL SYSTEM 4. without the column and foundation system.Outriggers are rigid horizontal structures designed to recover the building overturning stiffness and strength by connecting the building core wall to the External column. Keywords: Tall buildings, Outrigger system, Structural design, Construction, Damped outrigger system, Fused outrigger system 1. The ICJ is one of the oldest and most respected journals on civil engineering in India. Stiffness of the central core. Fig -1: Evolution of Structural Systems 2. Geometry of the tall building. A foundation with a 6m thick mat For 30−storey model, 23% maximum displacement reduction can be achieved by providing first outrigger at the top and second outrigger in the structure height. reduction related to the outrigger and belt truss system location. demand on the structural system dramatically increased, and as a result, the total structural material consumption increases drastically (Ali, 2001). Concrete floors in tall buildings often consist of a two-way floor system such as a flat plate, flat slab, or a waffle system which can resist lateral loads (see Figure 3). The structural systems usually adopted for high rise buildings are as follows; Column and slab systems. behaviour of Outrigger structural system is dependent upon many factors. C. Structural Behaviour of Outrigger System Whenever a lateral load is acting on an outrigger structure, column-restrained outrigger offers resistance to the core from rotation. This leads to lateral deflection and moments in the central core lesser than that generated by a free standing shear wall. 4. This comparative analysis has been aimed to select the optimal structural system for a … The exterior perimeter Mega frame provides additional stiffness and strength. To gain insight into the conceptual design of such systems, a simple beam-damper system model for a building with such dampers installed is developed and studied. The stiffness and location of the outrigger truss system. 2. In an outrigger structural system with a braced core, the core carries lateral shear forces and part of the overturning moment. Read online. Outrigger system for tall buildings has been used for narrow The outrigger system consist of a main core element connected to the external columns by outrigger beams at one or several floors and resists against core’s rotation and storey drift. The outrigger system and the core looks something like shown in the picture. Outrigger-Braced Structural System Outrigger are rigid horizontal structures designed to improve building overturning stiffness and strength by connecting the core or spine to distant columns[3].Outrigger systems functions by tying together two structural systems- typically a core system and a perimeter system to yield whole Raj Kiran Nanduri, PMB, Suresh, B, Hussain, MDI (2013) Optimum position of outrigger system for high-rise reinforced concrete buildings under wind and earthquake loadings. Outrigger systems are often used to transfer lateral forces to the foundation. 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