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Tektonik

Program lektion 912.30-13.15 Rammen og buen

13.15–13.30 Pause

13.30–14.15 Formgivning af ramme-og buekonstruktioner

14.30–16.30 Opgave

KursusholderPoul Henning Kirkegaard, institut 5, Aalborg Universitet

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Rammekonstruktioner/Buekonstruktioner

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Ramme konstruktion

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Rammens virkemåde

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Rammens virkemådeVæg Ramme Statisk system

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Rammens virkemåde

Stive rammehjørne medfører at deformationer i søjle overføres til bjælke.

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Momentstive samlinger - stål

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Momentstive samlinger - beton

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Momentstive samlinger - betonSkole i Otaniemi - Aalvar Aalto Kirke i Riola - Aalvar Aalto

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Momentstive samlinger – træ ?

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Momentstive samlinger – træ ?Great Coxwell Barn

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Momentstiv samlinger

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Statisk bestemthed - ubestemthed

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Statisk bestemthed - ubestemthed

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Kræfter i 3 charniere ramme

Anvender lodret ligevægt og symmetri

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Bestemmer kræfter i pkt. C og vandret kraft i A.Det ses at Cy = 0. Der tages moment om pkt. C om laves vandret ligevægt.

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Snitkræfter bestemmes .

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Rammer med hhv. stiv og blød søjle

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Sainsbury Center - Norman Foster

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L’Unité d’Habiation – Le Corbusier

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Lyon-Satolas TGV Station - Calatrava

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Ramme konstruktion

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Ramme konstruktion

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Buekonstruktioner

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Buekonstruktioiner

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“Funicular….” kabel/kæde der hænger

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“Funicular….” kabel/kæde der hænger

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Understøtninger

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Understøtninger

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Gigantium

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Vandrette reaktioner

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Kings College Cambridge

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“Funicular….” kabel/kæde der hænger

Ved at arrangere en konstruktion med omvendt form at en hængende kabel, er det muligt at lave en konstruktion, somkun tager tryk kræfter.

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Kræfter versus Materialevalg

Louis Kahn: National Assembly Building, Dhaka, Bangladesh, 1983.

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Ikke “funicular” last

Kabler ændret form efter last , hvilket en buekonstruktionikke gør.

Ikke “funicular” last kan medførerindre kræfter forskellig for trykkonstruktionen bliver ustabil

Buekonstruktioner laves med rene trykkræfter for egenlast. Variabel last optages som ikke rene trykkræfter.

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“Funicular….” kabel/kæde der hænger

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Gaudis kædestudier

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Gaudis kædestudier 1:10 model

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The Royal Horticultural Halls,London

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Hangar I & II - Pier Luigi Nervi

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Udstillingshal,Torino - Pier Luigi Nervi

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Los Manantiales - Candela

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Hershey Hockey Arena - Tedesko

"The most impressive example in this country of the thin concrete shell roof has recently been completed in Hershey, Pa. Of barrel type, only 3-1/2-in. thick (except at the edges) and supported by two-hinged concrete arches, the roof covers an area 232-ft. wide by 340-ft. long within which 7,180 bleacher seats surround a standard 85x200-ft. ice skating floor. Known as the Hershey Sports Arena, the new building is the home of the Hershey Hockey Club. It is built entirely of concrete to a design developed to achieve both monumental appearance and permanence at a reasonable cost."

"The most impressive example in this country of the thin concrete shell roof has recently been completed in Hershey, Pa. Of barrel type, only 3-1/2-in. thick (except at the edges) and supported by two-hinged concrete arches, the roof covers an area 232-ft. wide by 340-ft. long within which 7,180 bleacher seats surround a standard 85x200-ft. ice skating floor. Known as the Hershey Sports Arena, the new building is the home of the Hershey Hockey Club. It is built entirely of concrete to a design developed to achieve both monumental appearance and permanence at a reasonable cost."

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Skalkonstruktion - Isler

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British Museum, London - Foster

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Skalkonstruktioner ?

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Water Pavilion - NOX

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BMW-Pavilion - B. Franken

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Guggenheim Bilbao- Gehry

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Opgave 1

Bestem vægten, som den bænk kan bære.

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Thank Youfor

Your Attention