Detachable deck type steel bar truss laminated slab

Abstract

The invention discloses a detachable deck type steel bar truss laminated slab, and relates to the field of building structures. The problems that an existing steel bar truss prefabricated slab steel bar truss is wasted, the slab span is small, the number of supports is large, the slab thickness is large, electromechanical pipeline crossing is difficult, installation and construction are complex, and the construction period is prolonged are solved. According to the technical scheme, a steel bar truss in a conventional steel bar truss prefabricated slab is placed on the upper surface of a squarepyramid frustum protruding out of the upper surface of a prefabricated bottom plate; an embedded steel plate and a connecting steel bar are welded to a steel bar at the lower chord of the steel bar truss; the steel bar is anchored into the prefabricated bottom plate; the center line of a horizontal support at the bottom of the prefabricated bottom plate coincides with the center line of the protruding square pyramid frustum; and after post-poured concrete on the prefabricated bottom plate reaches the design strength, the connecting steel bar is cut off, and the steel bar truss is detached soas to be recycled next time.

Description

technical field [0001] The invention relates to the technical field of building structures, and relates to a detachable top-supporting steel bar truss laminated plate applied to a prefabricated reinforced concrete house building. Background technique [0002] The construction formwork of the cast-in-place floor slab of reinforced concrete buildings often adopts detachable wood plywood, steel formwork or aluminum formwork, which is laborious and time-consuming to disassemble and assemble many times, and the number of formwork supports is large. In recent years, the form-free construction technology using prefabricated steel truss slabs as permanent construction templates for floors has been widely used. This type of prefabricated slab generally pre-embeds the two lower chord steel bars of the triangular steel truss and part of the diagonal web bars inside the prefabricated slab, and the remaining part of the truss reinforcement is exposed above the prefabricated slab. [000...

AI Technical Summary

Problems solved by technology

[0008] The detachable top-supporting steel truss superposition of the present invention solves the defect that the aforementioned steel bar truss cannot be used repeatedly and causes waste of materials, and also solves the problem that the existing prefabricated slabs have too small a span, too many supports, and the thickness of the slab is too large Problems such as overweight, difficulty in crossing mechanical and electrical pipelines, troublesome installation, cumbersome construction, extended construction period, and high cost

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