Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Analysis and Design of Double-T Flanges
Pretensioned concrete double-T members are widely used as floors in parking garages. As such, the current design codes require consideration of both uniformly distributed and concentrated loads. ASCE 7 and IBC require, for vehicles with no more than nine-passenger capacity, either the dead load, snow load, and a distributed live load of 40 lb/ft2 or the dead load plus a single concentrated live load of 3000 lb, whichever produces the maximum effect. Both cases require the use of the appropriate load factors, usually 1.2 for dead load, 0.5 for snow load, and 1.6 for live loads. The concentrated load is described in the commentary to ASCE 7 as being produced by a jack acting on a small area. While elastic analyses of slab structures are seldom done, the results of these analyses are behind most design methods for slab structures. Yield-line solutions have been useful in many slab design cases, but they have not been so for the double-T flange cases considered herein.
Analysis and Design of Double-T Flanges
Pretensioned concrete double-T members are widely used as floors in parking garages. As such, the current design codes require consideration of both uniformly distributed and concentrated loads. ASCE 7 and IBC require, for vehicles with no more than nine-passenger capacity, either the dead load, snow load, and a distributed live load of 40 lb/ft2 or the dead load plus a single concentrated live load of 3000 lb, whichever produces the maximum effect. Both cases require the use of the appropriate load factors, usually 1.2 for dead load, 0.5 for snow load, and 1.6 for live loads. The concentrated load is described in the commentary to ASCE 7 as being produced by a jack acting on a small area. While elastic analyses of slab structures are seldom done, the results of these analyses are behind most design methods for slab structures. Yield-line solutions have been useful in many slab design cases, but they have not been so for the double-T flange cases considered herein.
Analysis and Design of Double-T Flanges
William L Gamble (Autor:in)
2017
Aufsatz (Zeitschrift)
Englisch
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