recent challenges and advances on - gamaco · •classical applications in buildings : pt slabs...
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Recent challenges and advances on PRESTRESSED CONCRETE design and construction
FIB Belgium Colloquium – June 5th 2013
François LEPERS, IrCEO of GAMACO sa
• Classical applications in buildings : PT SLABS
▫ Flat slabs
▫ Other PT slab structures
▫ examples
• Other particular cases
Recent challenges and advances on
prestressed concrete design and construction
PT slabs (1)
• Typical structure : flat slabs▫ bi-directional behavior – no beams
▫ Classical Span/depth ratio : L/30 to L/45
▫ Admissible spans : 6 to 12 m
▫ Common applications : office buildings, hotels, car parks, commercial center,…
PT slabs (2)• Other PT slab possibilities
▫ Larger spans (up to 16m) ; heavy loadings, self-weigth reduction
PT slabs (3)• AZ Groeninge – Kortrijk – 110 000m²
▫ Flat slab 250mm
▫ Typical grid : 8.1m x 8.1m
PT slabs (4) • Euromed – Marseille – 45 000 m²
PT slabs (5) • Parking casino Aix-en-Provence – 28 000 m²
▫ Grid 16.0m x 7.0m – waffle slab 400 mm
PT slabs (6) • Commercial center and parking LECLERC – Roques (Toulouse) 35 000 m²
▫ Grid 16.0m x 8.0 m▫ PT beams 1000 x 600 mm▫ PT slab 200mm
PT slabs (7) • Public Car Park – La Garde (Toulon) - 12500 m²
▫ Grid 16.0m x 6.0 m
▫ Parking : flat slab 350 mm
▫ Roof ( DL+LL = 12+10kPa) : 550 mm
Recent challenges and advances on
prestressed concrete design and construction
• Classical applications in buildings : PT SLABS
• Other particular cases:
▫ Load transfer structures
▫ Long cantilevers
Load transfer structures (1)• Cité Judiciaire - Luxemburg
▫ Bi-directional flat slab
▫ Max spans : 17.0m
▫ Slab thickness = 130cm
Load transfer structures (2)• Auditorium – Bordeaux
o Transfer beams - spans 32m.
o Section : 2.0m x 2.2m
Long cantilevers (1)• Residential building – Temse
▫ Flat slab 240mm – cantilever = 4.0m
Long cantilever(2)• Hotel de région - Toulouse
▫ Public office building▫ PT truss beam▫ Cantilever 6.0 m
Long cantilevers (3)
• Twarda tower – Warsaw – Poland▫ High-rise building (160m)▫ 44 levels▫ Cantilever 11m ▫ PT Hangers
Long cantilevers (4)
• Maison du Savoir - Luxemburg▫ PT slabs and PT Walls▫ 2 cantilevers : 25m each▫ 1 central span : > 50m
Recent challenges and advances on prestressed concrete design and construction
• Classical PT slab structure :
o economies in concrete, steel, CO2, €
• Architectural challenges
o Prestressed concrete can be an efficient solution
Platinium Towers (Warsaw – Poland)
Place de l’Université 251348 Louvain La Neuve
T 010/ [email protected]
Harensesteenweg 299180 Vilvoorde
T 02/[email protected]