Structural System In addition to its aesthetic and functional advantages, the spiralling “Y” shaped plan was utilized to shape the structural core of Burj Khalifa. The spire of Burj Khalifa is composed of more than 4,000 tonnes (4,400 short tons; 3,900 long tons) of structural steel. The structure of Burj Khalifa was designed to behave like a giant column with cross sectional shape that is a reflection of the building massing and profile. Beyond its record-breaking height, the Burj Khalifa incorporates new structural and construction efficiencies to reduce material usage and waste. The Burj Khalifa Project is the tallest structure ever built by man; the tower is 828 meters tall and compromise of 162 floors above grade and 3 basement levels. The “V” shape steel frame wraps around the reinforced concrete tower inhabiting hotel rooms and lobbies. The Burj Khalifa tower is crowned with a 4,000 tonnes structural steel telescopic spire, which houses communications equipment. Accordingly, the primary consideration in designing the piles and raft foundation was durability. Measures implemented included specialized waterproofing systems, increased concrete cover, the addition of corrosion inhibitors to the concrete mix. Its 160 floors have a number of uses including residential units, office spaces and hotel rooms. This design helps to reduce the wind forces on the tower, as well as to keep the structure simple and foster constructability. This system was introduced by Fazlur Rahman Khan while at the architectural firm Skidmore, Owings & Merrill (SOM), in their Chicago office. 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. La Grange multiplier methodology which results in a very efficient structure (Baker et ah, 2000).The reinforced concrete structure was designed in accordance with the requirements of ACI 318-02 Building Code Requirements for Structural Concrete. 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. 3.1 Lateral Load Resisting System. The construction began on 6 January 2004 and ended in the year 2010. The decision to build Burj Khalifa was based on the government’s decision to diversify from an oil-based The development and construction of the Burj Khalifa and the Civil Engineering disciplinaries involved . 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). The structural system employed for Burj Khalifa can be called as the Buttressed Core System. This structural system enables the building to support itself laterally and keeps it from twisting. The advantage of the stepping and shaping is to "confuse the wind'1. In order to rise to the great heights, a proper structural support is necessary. Structural monitoring of Burj Khalifa Tower. The tower is composed of three elements arranged around a central core. These include a “sky-sourced” ventilation system, in which cool, less humid air is drawn in through the top of the building. In addition to its aesthetic and functional advantages, the spiraling “Y” shaped plan was utilized to shape the structural core of Burj Khalifa. 3.1 Lateral Load Resisting System. The C60 (cube strength) SCC concrete was placed by the tremie method utilizing polymer slurry. 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. stringent crack control design criteria, and cathodic protection system utilizing titanium mesh (Figure 13) with an impressed current. The height of the multi-use skyscraper has "comfortably" exceed the previous record holder, the 509 meter (1671 ft) tall Taipei 101. The story of structural system selection and the structural system optimization is a … 2. The Burj Khalifa is designed to be the centerpiece of the large scale This enabled construction to proceed without the normal delays associated with column transfers. Each tier of the building sets back in a spiral stepping pattern up the building. The structure was analyzed for gravity (including P-Delta analysis), wind, and seismic loadings by ETABS version 8.4 (Figure 6). Structural System. Burj Khalifa is the tallest man-made structure ever built, at 828 m (2,716.5 ft). The exterior exposed steel is protected with a flame applied aluminum finish. heights periodically. At each setback, the building's width changes. As with all super-tall projects, difficult structural engineering problems needed to be addressed and resolved. An image of the Burj Khalifa is shown in Figure 1. The goal of the Burj Dubai Tower is not simply to be the world's highest building: it's to embody the world's highest aspirations. Architecture. 18 | Validating the Dynamics of the Burj Khalifa CTBUH Journal | 2011 Issue II Structural Overview The Burj Khalifa Project is the tallest structure ever built by man (see Figure 1). The setbacks are organized such that the Tower's width changes at each setback. The full 3D analysis model consisted of over 73,500 shells and 75,000 nodes. The three-dimensional analysis model consisted of the reinforced concrete walls, link beams, slabs, raft, piles, and the spire structural steel system. 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 center hexagonal reinforced concrete core walls provide the torsional resistance of the structure similar to a closed tube or axle. Rising 828 meters over the desert metropolis of Dubai, the Burj Khalifa tower is the world's tallest structure. Wind Engineering Design Under lateral wind loading, the building deflections are well below commonly used criteria. 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 architecture features a triple-lobed footprint, an abstraction of the Hymenocallis flower. Photo of the Completed Burj Khalifa The structure of Burj Khalifa was designed to behave like a giant column with cross sectional shape that is a reflection of the building massing and profile. Each wing, with its own high performance concrete corridor walls and perimeter columns, buttresses the others via a six-sided central core, or hexagonal hub. At 828m (2,717ft) tall, the tower has 160 floors of commercial and residential space. SOM applied a rigorous geometry to the tower that aligned all the common central core, wall, and column elements. The Burj Khalifa tower is crowned with a 4,000 tonnes structural steel telescopic spire, which houses communications equipment. 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