Transcription of Bridge Construction Methods - PTIA
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Bridge Construction Methods - PTIA
Bridge Construction MethodsBy David TRAYNERC ontentsA. Introduction of SpeakerB. Bridge Construction Methodsi. Pre-castii. Cast in-situiii. OthersC. Precasting TechniquesD. DuctalA. SpeakerDavid - Special Projects Operations Manager : UTS 1990 BEng; UNE 2001 MBA Costain Australia Pty 2004 VSL Heavy Lift Operations NS4 Tsing Mah Bridge Skybridge Petronas Twin Towers Burj Al Arab, 4 New Bangkok International Airport, BKK, onwards VSL Australia, Projects: LHD, BRB, GDE, GUPP recast Concrete Bridges1. I Beams & Super Tee s2. Segmental3. Full Span Cast in-situ post tensioned concrete decksPrecast I Beams & Super Tee s1.
Precast Segmental Techniques 1. Description • Complete deck cast, delivered & erected in unique cells • Segments are prestressed together using external and or internal tendons. Joints can be “dry” or “wet”. • Typically in Span by Span or Balanced Cantilever mode 2. Advantages • Structurally efficient and aesthetic • Complete with deck when erected I.e. rapid & safe
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