Fire-assistant hall structure by a composite steel construction method

摘要

Difficulties in the production of conventional fire-assistant composite steel/concrete halls, result, on the one hand, in that steel beams with concrete-filled chambers entail high outlay to produce and, owing to the high weight thereof, can be transported and laid only with difficulty and, on the other hand, in that steel-construction accuracy is necessary for the junction points, said junction points usually having to be protected subsequently by filling them with concrete. In the case of the hall according to the invention, the supports comprise steel hollow profiles and the beams comprise steel trough profiles, which are fitted together in the manner of modular construction. The connections between support and beam comprise perforated metal sheets which engage, through slots in the support casing, into the support interior, on the one hand, and into the interior of the trough, on the other hand. By virtue of filling supports and beams with concrete on the building site, a load-bearing skeleton is obtained. The composite reinforced-concrete floors comprise prefabricated reinforced-concrete slabs which have a saddle-like cross-section and are provided along their borders, on the upper side, with a cutout with projecting reinforcement, with the result that, in order to produce a monolithic frictionally locking floor slab, it is likewise necessary only to fill said cutout with in-situ concrete. <IMAGE>