Recent challenges and advances on *PRESTRESSED CONCRETE design and construction. FIB Belgium Colloquium . GAMACO Ingénieurs-conseils

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Technology

Published on February 20, 2014

Author: GAMACO

Source: slideshare.net

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A overview of recent challenges in prestressed concrete, by Freyssinet and Gamaco.

Recent challenges and advances on PRESTRESSED CONCRETE design and construction FIB Belgium Colloquium – June 5th 2013 François LEPERS, Ir CEO of GAMACO sa

Recent challenges and advances on prestressed concrete design and construction • Classical applications in buildings : PT SLABS ▫ Flat slabs ▫ Other PT slab structures ▫ examples • Other particular cases

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 Place de l’Université 25 1348 Louvain La Neuve T 010/ 620.600 info@gamaco.eu Harensesteenweg 299 180 Vilvoorde T 02/252.07.40 info@freyssinet.be Platinium Towers (Warsaw – Poland)

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