Prefabricated concrete bottom plate with stiffening cold-bending thin wall type steel ribs and made composite slab

Abstract

The invention discloses a prefabricated concrete bottom plate with stiffening cold-bending thin wall type steel ribs and a made composite slab. The prefabricated sconcrete bottom plate comprises prefabricated bottom plate transverse structural reinforcement, prefabricated bottom plate longitudinal stress reinforcement, longitudinal stiffening cold-bending thin wall type steel ribs and stiffening cold-bending thin wall type steel rib structural reinforcement; the two longitudinal stiffening cold-bending thin wall type steel ribs same in shape penetrate through holes reserved in the lower portions of the ribs through the transverse structural reinforcement and are connected with the upper portions of the two ribs through the stiffening cold-bending thin wall type steel rib structural reinforcement, and the prefabricated bottom plate transverse structural reinforcement, the prefabricated bottom plate longitudinal stress reinforcement and the longitudinal stiffening cold-bending thin walltype steel ribs are embedded in high-strength concrete to form the prefabricated concreted bottom plate. Accordingly, manufacturing is easy and convenient, rigidity is large, industrial production isfacilitated, and the made composite floor with the stiffening cold-bending thin wall type steel ribs has the advantages that convenience is brought to construction, the bearing capacity is large, theanti-seismic property is good, forms are saved, the floor mass is reduced, and the floor heat preservation, therm insulation and sound insulation functions are added.

Description

technical field [0001] The invention relates to a prefabricated concrete bottom slab with reinforced cold-formed thin-walled steel ribs and a laminated slab made thereof, belonging to the field of building construction. Background technique [0002] At present, most of the prefabricated floor slabs used in domestic laminated floors are prefabricated prestressed concrete ribbed floors. It cannot meet the development requirements of high-rise buildings and long-span structures. The patent with the publication number CN1254589C discloses a ribbed prestressed concrete prefabricated member slab, including a reinforced concrete bottom slab, reinforced concrete longitudinal ribs and bottom slab prestressed tendons. Laminated concrete is easy to form a two-way stressed floor. However, the prefabricated components are easy to break during transportation and hoisting, and the prefabricated floor prestressed tendons are complicated to manufacture. At the same time, more slab bottom ...

AI Technical Summary

Problems solved by technology

However, the profiled steel plate must be placed on the upper flange of the profiled steel beam. The contact surface between the cast-in-place reinforced concrete and the profiled steel is small. To prevent slippage, it is necessary to weld the round beam bolts for positioning. The construction process is cumbersome, especially for the profiled steel web and the upper flange. The exposed places need to be protected by fireproof coatings, the construction cost is high, and the sound and heat insulation performance of the floor is poor

The patent with the publication number CN101769030 A discloses a prefabricated concrete floor with I-steel ribs, in which section steel is pre-embedded in the prefabricated concrete floor. This method improves the initial stiffness of the prefabricated floor and increases the bearing capacity of the floor. However, the amount of steel used is too large, which increases the construction cost

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