A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
In September 2004, Indian composites engineering firm Composite Design & Technology (CD&T), in collaboration with composites manufacturing company BFG International of Bahrain, designed a roof in fibre reinforced plastics (FRP) for a conference hall building in Bahrain This case study details a roof structure developed for a conference hall in Bahrain, believed to be one of the largest roofing structures of its kind made in composite materials. The roof consisted of five vault structures, each 50 m long including an overhang of 7 m at front, with a width ranging from 16 m at the front with a 9.25 m rise, to 8 m at the rear end with a 6 m rise. The vault dimensions were determined by architectural requirements. For ease of moulding and handling, each vault was made into six pieces, which were joined together by bolted flange construction. The front fascia of each vault was provided with a decorative design, which was moulded with the fascia panel. Structural analyses were carried out using finite element techniques. Panels were initially modelled using threedimensional general shell elements with six degree of ffreedom. Deflections and stress patterns were identified. The final FE model was built using 3D laminated composite general shell elements. The panels were manufactured by open contact moulding with minimum 35 % of fibre content. The composite laminate employed honeycomb core material sandwiched between fibre reinforced composite skins. For the reinforcement, combinations of different forms of E-glass reinforcements like chopped strand mat and woven roving were used. Because of fire safety requirements a fire retardant polyester resin system was used.
In September 2004, Indian composites engineering firm Composite Design & Technology (CD&T), in collaboration with composites manufacturing company BFG International of Bahrain, designed a roof in fibre reinforced plastics (FRP) for a conference hall building in Bahrain This case study details a roof structure developed for a conference hall in Bahrain, believed to be one of the largest roofing structures of its kind made in composite materials. The roof consisted of five vault structures, each 50 m long including an overhang of 7 m at front, with a width ranging from 16 m at the front with a 9.25 m rise, to 8 m at the rear end with a 6 m rise. The vault dimensions were determined by architectural requirements. For ease of moulding and handling, each vault was made into six pieces, which were joined together by bolted flange construction. The front fascia of each vault was provided with a decorative design, which was moulded with the fascia panel. Structural analyses were carried out using finite element techniques. Panels were initially modelled using threedimensional general shell elements with six degree of ffreedom. Deflections and stress patterns were identified. The final FE model was built using 3D laminated composite general shell elements. The panels were manufactured by open contact moulding with minimum 35 % of fibre content. The composite laminate employed honeycomb core material sandwiched between fibre reinforced composite skins. For the reinforcement, combinations of different forms of E-glass reinforcements like chopped strand mat and woven roving were used. Because of fire safety requirements a fire retardant polyester resin system was used.
Raising the roof
Jacob, Amanda (author)
Reinforced Plastics ; 50 ; 28-30
2006
3 Seiten, 7 Bilder
Article (Journal)
English
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