Fully-fabricated steel-prefabricated concrete floor slab composite beam

Abstract

The invention discloses a fully fabricated steel-prefabricated concrete floor slab composite beam and relates to the field of architectural structure. The composite beam comprises a steel beam with an upper flange, a plurality of prefabricated concrete floor slabs combined with one another in the same plane and pre-embedded with guide grooves, connecting members, a C-shaped clamping member, a fastener and an end stop member; the prefabricated concrete floor slabs are mounted on the upper surface of the upper flange of the steel beam, a plurality of opening grooves matched with the connecting members are formed in the side walls of prefabricated concrete floor slabs, and the prefabricated concrete floor slabs are fixed to the upper surface of the upper flange of the steel beam through the C-shaped clamping member and the fastener; and the end stop member comprises a bottom plate used for being connected with the upper flange of the steel beam in a bolted mode, a stop plate is arranged on the bottom plate, and the ends of the prefabricated concrete floor slabs are placed between the stop plate and the upper flange of the steel beam. The fully-fabricated steel-prefabricated concrete floor slab composite beam is capable of avoiding wet operation in the construction process, simple in structure, convenient to dismount and mount, high in construction efficiency, and capable of realizing replacement and recycling of the prefabricated concrete floor slabs.

Description

technical field [0001] The invention relates to the field of building structures, in particular to a fully assembled steel-prefabricated concrete floor composite beam. Background technique [0002] Steel-concrete composite beam is a new type of structure developed on the basis of steel structure and concrete structure. It mainly resists the lifting and relative slippage at the interface between the steel beam and the concrete floor by setting shear connectors (bolts, channel steel, bending bars, etc.), making them work together as a whole . [0003] At present, the commonly used steel-concrete composite beams are steel-cast-in-place concrete floor composite beams and steel-laminated monolithic concrete floor composite beams. [0004] The steel-cast-in-place concrete floor composite beam is composed of a steel beam, a cast-in-place concrete floor and shear studs. It has the advantages of high overall rigidity and significant combination effect, and is suitable for floors wi...

AI Technical Summary

Problems solved by technology

However, there are the following disadvantages: ①The amount of wet work is very large, resulting in low construction efficiency, high cost and environmental pollution; ②There are too many formwork and on-site supports, which further reduces the construction efficiency and increases the cost; ③Steel beams and cast-in-place concrete floors are pouring After that, it is integrated and cannot be disassembled. As a result, when the load of the floor of the existing structure increases, the thick floor cannot be replaced. When the floor is damaged, the new floor cannot be replaced, and the floor cannot be recycled, which is not suitable for building industrialization

However, there are still deficiencies, which are mainly manifested in: ①Concrete still needs to be poured on site to realize the combination effect, and there are many wet operations, resulting in low construction efficiency, high cost and environmental pollution; When the span is large, support is required, and the bottom of the slab needs to be treated for fire protection and anticorrosion, which is costly; when the span of prestressed concrete composite slab (slab) and reinforced truss concrete composite slab is greater than 1.8m, support is required, and ribbed Stressed concrete laminated slabs need to be supported when the span is greater than 3.6m, which further reduces construction efficiency and increases costs; When the floor load increases, the thick floor cannot be replaced, and when the floor is damaged, the new floor cannot be replaced, and the floor cannot be recycled, which is not suitable for building industrialization

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