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Construction of the tower was started in 2004. The piles are 1.5 meter in diameter and approximately 43 meters long with a design capacity of 3,000 tonnes each. This settlement would be a gradual curvature of the top of grade over the entire large site. The massing of the 828-meter (2,717-foot) tall Burj Khalifa is organized around a central core with three wings, each consisting of four bays (see Figure 2). Phase 4: 1 Borehole with cross-hole and down-hole gophysics; depth = 140m. Each tier of the building sets back in a spiral stepping pattern up the building. The central pinnacle pipe weighs 350 tonnes (390 short tons; 340 long tons) and has a height of 200 m (660 ft). The height of the multi-use skyscraper has "comfortably" exceed the previous record holder, the 509 meter (1671 ft) tall Taipei 101. 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. SOM created a simple Y-shaped plan to reduce wind forces, as well as to foster constructability. Khan's contributions to the design of tall buildings have had a profound impact on architecture and engineering. Overview Structural System Foundation Lateral Resisting System Loads Main Elements. Burj Khalifa is equivalent to 17 football (soccer) fields or 25 American football fields. The second mode is a perpendicular lateral side sway with a period of 10.2 seconds. Burj Khalifa is the tallest man-made structure ever built, at 828 m (2,716.5 ft). Each wing is also braced by a series of buttress walls which are connected by coupling beams and radiated from a central closed prismatic tube. The 280,000 m2 (3,000,000 ft2) reinforced concrete multi-use Burj Dubai tower is utilized for retail, a Giorgio Armani Hotel, residential and office. The raft was constructed in four (4) separate pours (three wings and the center core). Seismic loading typically did not govern the design of the reinforced concrete Tower structure. The wind vortices never get organized because at each new tier the wind encounters a different building shape. Measures implemented included specialized waterproofing systems, increased concrete cover, the addition of corrosion inhibitors to the concrete mix. Structural System Brief Description 2.1. The site geotechnical investigation consisted of the following Phases: A detailed 3D foundation settlement analysis was carried out (by Hyder Consulting Ltd., UK) based on the results of the geotechnical investigation and the pile load test results. The Burj Khalifa is designed to be the centerpiece of the large It consists of series high-strength reinforced concrete walls: a strong central core is connected to three building wings. d) Structural System In addition to its aesthetic and functional advantages, the spiraling “Y” shaped plan was utilized to shape the structural core of Burj Khalifa. At the pinnacle, the central core emerges and is sculpted to form a spire. Burj Khalifa. This design helps to reduce the wind forces on the tower as well as keep the structure simple and constructability. The spire of Burj Khalifa is composed of more than 4,000 tons of structural steel. The wall and column sizes were optimized using virtual work .' Burj Khalifa (Arabic: برج خليفة ‎, "Khalifa Tower") is an extremely tall skyscraper in Dubai, United Arab Emirates named after Khalifa bin Zayed Al Nahyan, and is the tallest building ever built, at 828 metres (2,717 feet).Before the building opened, it was called Burj Dubai.The building is 162 stories high. At 828 meters in height, the Burj Khalifa is the tallest building in the world. Phase 3: 6 Boreholes (two with pressure meter testing) with depths up to 60m. 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. 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. The seismic analysis consisted of a site specific response spectra analysis. The result is a tower that is extremely stiff torsionally. Overview Structural System Foundation Lateral Resisting System Loads Main Elements 2. The full 3D analysis model consisted of over 73,500 shells and 75,000 nodes. This structural system enables the building to support itself laterally and keeps it from twisting. Structural System Brief Description 2.1. The context of the Burj Dubai being located in the city of Dubai, UAE, drove the inspiration for the building form to incorporate cultural, historical, and organic influences particular to the region. The result is a tower that is extremely stiff laterally and torsionally. Built of reinforced concrete and clad in glass, the tower is composed of three elements arranged around a central buttressed core. Ontario (Figure 14). This structural system enables the building to support itself laterally and keeps it from twisting. 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 “V” shape steel frame wraps around the reinforced concrete tower inhabiting hotel rooms and lobbies. The groundwater in which the Burj Dubai substructure is constructed is particularly severe, with chloride concentrations of up to 4.5%, and sulfates of up to 0.6%. The structural integrity of the building itself is the damping system. heights periodically. ... For example, a steel/concrete indicates a steel structural system located on top of a concrete structural system… Beyond its record-breaking height, the Burj Khalifa incorporates new structural and construction efficiencies to reduce material usage and waste. 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. Khan's contributions to the design of tall buildings have had a profound impact on architecture and engineering. 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. The Dubai Municipality (DM) specifies Dubai as a UBC97 Zone 2a seismic region (with a seismic zone facior Z = 0.15 and soil profile Sc). The 280,000-square-meter skyscraper contains office, residential, and retail space, along with a Giorgio Armani hotel. The advantage of the stepping and shaping is to "confuse the wind'1. Burj Khalifa structural health monitoring Strainstall completed a monitoring contract on the tallest man-made structure ever built - the Burj Khalifa Tower in Dubai. Due to the aggressive conditions present caused by the extremely corrosive ground water, a rigorous program of anti-corrosion measures was required to ensure the durability of the foundations. Designers purposely shaped the structural concrete Burj Dubai - "Y" shaped in plan - to reduce the wind forces on the tower, as well as to keep the structure simple and foster constructibility. The setbacks are organized with the Tower's grid, such that the building stepping is accomplished by aligning columns above with walls below to provide a smooth load path. The building officially opened on 4 January 2010. The exterior exposed steel is protected with a flame applied aluminum finish. Burj Khalifa is equivalent to 17 football (soccer) fields or 25 American football fields. Burj Khalifa is the first mega-high rise in which certain elevators are programmed to permit controlled … The Burj Khalifa tower is crowned with a 4,000 tonnes structural steel telescopic spire, which houses communications equipment. Construction of the tower was started in 2004. At 828m (2,717ft) tall, the tower has 160 floors of commercial and residential space. Market: Commercial + Office, Hospitality, Mixed Use, Residential, National Geographic Features Burj Khalifa and William Baker in Engineering Marvels Series, The Man Behind the Wonders – Bill Baker Reveals the Secrets of Structural Engineering, William F. Baker in The Engineers on BBC World Service, Structural Engineers Association of Illinois, American Society of Civil Engineers (ASCE) – Architectural Engineering Institute (AEI), Award of Merit: World Voices Sculpture, Burj Khalifa Lobby, GCC Technical Building Project of the Year, International Association for Bridge and Structural Engineering, Excellence in Structural Engineering: Most Innovative Structure, International Projects Category: Outstanding Project, National Council of Structural Engineers Association, Special Recognition for Technological Advancement, 875 North Michigan Avenue – Structural Engineering, Willis Tower (formerly Sears Tower) – Structural Engineering, Poly Real Estate Headquarters – Structural Engineering, Poly Corporation Headquarters – Structural Engineering. 23 Boreholes ( three wings and the center core ) found in the.! Was used to reinforce the structural system can be called as the buttressed core system in order to rise the... 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