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Cctv final

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Cctv final

  1. 1. NARSEE MONJEE INSTITUTE OF MANAGEMENT | BALWANT SHETH SCHOOL OF ARCHITECTURE | MUMBAI INDIA CONSTRUCTION STUDIO AKSA KEHRA PRIYAM MEHTA SHALIN DOSHI SURAJ MANIK CANTILEVER STRUCTURES
  2. 2. NARSEE MONJEE INSTITUTE OF MANAGEMENT | BALWANT SHETH SCHOOL OF ARCHITECTURE | MUMBAI INDIA CONSTRUCTION STUDIO AKSA KEHRA PRIYAM MEHTA SHALIN DOSHI SURAJ MANIK CANTILEVER STRUCTURESThe new building of the China Central Television (CCTV) Headquarters has a very unique andcomplicated structural system. Its structural design required comprehensive wind engineeringstudies to determine detailed wind load distributions for potentially critical load patterns.These load patterns include twist loading between two main towers and vertical loading of thetop links. To meet these design requirements, a high-frequency pressure integration testingprocedure was conducted in RWDI’s boundary layer wind tunnel studies. Top Link Tower 2 Tower 1 Bottom Link
  3. 3. NARSEE MONJEE INSTITUTE OF MANAGEMENT | BALWANT SHETH SCHOOL OF ARCHITECTURE | MUMBAI INDIA CONSTRUCTION STUDIO AKSA KEHRA PRIYAM MEHTA SHALIN DOSHI SURAJ MANIK CANTILEVER STRUCTURES
  4. 4. NARSEE MONJEE INSTITUTE OF MANAGEMENT | BALWANT SHETH SCHOOL OF ARCHITECTURE | MUMBAI INDIA CONSTRUCTION STUDIO AKSA KEHRA PRIYAM MEHTA SHALIN DOSHI SURAJ MANIK CANTILEVER STRUCTURESSUPER STRUCTURE – CONTINUOUS TUBEEarly on, the team determined that the only way to deliver the desired architectural form of theCCTV building was to engage the entire façade structure , creating in essence an externalcontinuous tube system. Adopting this approach gave proportions that could resist the hugeforces generated by the cranked and leaning form, as well as extreme seismic and wind events.
  5. 5. NARSEE MONJEE INSTITUTE OF MANAGEMENT | BALWANT SHETH SCHOOL OF ARCHITECTURE | MUMBAI INDIA CONSTRUCTION STUDIO AKSA KEHRA PRIYAM MEHTA SHALIN DOSHI SURAJ MANIK CANTILEVER STRUCTURESSUBSTRUCTURE AND FOUNDATIONSThe main Towers stand on piled raft foundations. The piles are typically 1.2m in diameter, andabout 52m long. Given the magnitude and distribution of the forces to be transferred to theground, the raft is up to 7.5m thick in places and extends beyond the footprint of the Towers toact as a toe, distributing forces more favourably into the ground. The foundation system isarranged so that the centre of the raft is close to the centre of load at the bottom of eachTower, and no permanent tension is allowed in the piles. Limited tensions in some piles are onlypermitted in major seismic events.
  6. 6. NARSEE MONJEE INSTITUTE OF MANAGEMENT | BALWANT SHETH SCHOOL OF ARCHITECTURE | MUMBAI INDIA CONSTRUCTION STUDIO AKSA KEHRA PRIYAM MEHTA SHALIN DOSHI SURAJ MANIK CANTILEVER STRUCTURESPrinciples of the tube structure: regular grid of columns and edge beams + patterned diagonalbracing = braced tube system.
  7. 7. NARSEE MONJEE INSTITUTE OF MANAGEMENT | BALWANT SHETH SCHOOL OF ARCHITECTURE | MUMBAI INDIA CONSTRUCTION STUDIO AKSA KEHRA PRIYAM MEHTA SHALIN DOSHI SURAJ MANIK CANTILEVER STRUCTURESThe floors cantilevered from the two leaning Towers to form the Overhang are enclosed by thecontinuous tube structure on the outside. This supports a two-way transfer deck in the bottomtwo storeys of the Overhang, carrying the columns for the floors
  8. 8. NARSEE MONJEE INSTITUTE OF MANAGEMENT | BALWANT SHETH SCHOOL OF ARCHITECTURE | MUMBAI INDIA CONSTRUCTION STUDIO AKSA KEHRA PRIYAM MEHTA SHALIN DOSHI SURAJ MANIK CANTILEVER STRUCTURES

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