It consists of series high-strength reinforced concrete walls: a strong central core is connected to three building wings. Accordingly, the primary consideration in designing the piles and raft foundation was durability. Built of reinforced concrete and clad in glass, the tower is composed of three elements arranged around a central buttressed core. The wall thicknesses and column sizes were fine-tuned to reduce the effects of creep and shrinkage on the individual elements which compose the structure. To combat the wind forces and seismic forces, the engineers developed a new structural system called the buttressed core, which consists of a hexagonal core reinforced by three buttresses that form the ‘Y’ shape. Local aggregates were utilized for the concrete mix design. The superstructure has reached over 165 stories. The full 3D analysis model consisted of over 73,500 shells and 75,000 nodes. As it rises from a flat base, setbacks occur at each element in an upward spiraling pattern, reducing the tower’s mass as it reaches skyward. The story of structural system selection and the structural system optimization is a … At 828 meters in height, the Burj Khalifa is the tallest building in the world. In structural engineering, the tube is a system where, to resist lateral loads (wind, seismic, impact), a building is designed to act like a hollow cylinder, cantilevered perpendicular to the ground. The second mode is a perpendicular lateral side sway with a period of 10.2 seconds. The spire of Burj Khalifa is composed of more than 4,000 tonnes (4,400 short tons; 3,900 long tons) of structural steel. 3.1 Lateral Load Resisting System. 2. 3.22 shows a typical floor plan of the tower, a buttress core system was used as the major structural system for this supertall tower. heights periodically. Structural System Brief Description 2.1. The setbacks are organized such that the Tower's width changes at each setback. structural system of the Burj Khalifa acts like a single unit creating a tower that acts as one giant concrete beam cantilevering from the ground. In addition to its aesthetic and functional advantages, the spiraling “Y” shaped plan was utilized to shape the structural core of Burj Khalifa. L-box, V-Box and temperature. Burj Khalifa - Major Structural System It is correct to say that nowadays the Burj Khalifa represents the concept of excellence in building design. This design helps to reduce the wind forces on the tower as well as keep the structure simple and constructability. The structural system employed for Burj Khalifa can be called as the Buttressed Core System. The center hexagonal reinforced concrete core walls provide the torsional resistance of the structure similar to a closed tube or axle. Lateral load resisting system and floor framing system are the two major components of the superstructure of the Burj Khalifa Tower and these systems are discussed below. The wall and column sizes were optimized using virtual work .' The tower does not contain any structural transfers. Burj Khalifa is home to 57 elevators and 8 escalators the building service/fireman’s elevator have a capacity of 5,500 kg and is the world’s tallest service elevator. The solid reinforced concrete raft is 3.7 meters (12 ft) thick and was poured utilizing C50 (cube strength) self consolidating concrete (SCC). In order to rise to the great heights, a proper structural support is necessary. SOM applied a rigorous geometry to the tower that aligned all of the common central core and column elements. of the tower structural systems, focuses on the key issues considered in construction planning of the key structural components and briefly outlines the execution of one of the most comprehensive architectural forms and structural in tall buildings. Structural System. At 828 metres (2,717ft) tall, the tower has 160 floors comprising hotels, restaurants, luxury residences, offices, and the world’s highest swimming pool and outside observation deck. The spiraling “Y” shaped plan was used to reinforce the structural core of Burj Khalifa. stringent crack control design criteria, and cathodic protection system utilizing titanium mesh (Figure 13) with an impressed current. The structural system can be described as a "buttressed" core (Figures 1, 2 and 3). This settlement would be a gradual curvature of the top of grade over the entire large site. The decision to build Burj Khalifa was based on the government’s decision to diversify from an oil-based The tower is composed of three elements arranged around a central core. Its reinforced concrete structure makes it stronger than steel-frame skyscrapers. of the tower structural systems, focuses on the key issues considered in construction planning of the key structural components and briefly outlines the execution of one of the most comprehensive architectural forms and structural in tall buildings. Structural System Description Burj Khalifa has "refuge floors" at 25 to 30 story intervals that are more fire resistant and have separate air supplies in case of emergency. Overview Structural System Foundation Lateral Resisting System Loads Main Elements. Phase 4: 1 Borehole with cross-hole and down-hole gophysics; depth = 140m. The RWDI wind engineering was peer reviewed by Dr. Nick Isyumov of the University of Western Ontario Boundary Layer Wind Tunnel Laboratory. Similar to Burj Khalifa, as each wing is buttressed by the other two, therefore, the stability of the structure is greatly enhanced. Burj Khalifa uses the bundled tube design of the Willis Tower, invented by Fazlur Rahman Khan. Reinforcement was typically at 300mm spacing in the raft, and arranged such that every 10lh bar in each direction was omitted, resulting in a series of "pour enhancement strips" throughout the raft at which 600 mm x 600 mm openings at regular intervals facilitated access and concrete placement. The geo-technical studies were peer reviewed by both Mr. Clyde Baker of STS Consultants, Ltd. (Chicago, IL, USA) and by Dr. Harry Poulos of Coffey Geosciences (Sydney, Australia). Burj al Arab is made up of 28 storeys of split levels (56 The tower does not contain any structural transfers. The crowning glory of Burj Khalifa is its telescopic spire comprised of more than 4000 tons of structural steel. 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