Full-prefabricated floor special for fabricated steel structure

Abstract

The invention relates to a full-prefabricated floor special for a fabricated steel structure. The full-prefabricated floor is arranged on a steel beam and comprises a steel bar truss, surface bars, bottom bars, an embedded part and a prefabricated concrete layer. The steel bar truss comprises upper string steel bars, lower string steel bars and erecting bars. The upper string steel bars and the lower string steel bars are arranged in parallel and welded to the upper ends and the lower ends of the erecting bars correspondingly. The erecting bars are arranged at equal intervals, and the surfacebars and the upper string steel bars of the steel bar truss are bound together. The bottom bars and the lower string steel bars of the steel bar truss are bound together, and the steel bar truss, thesurface bars, the bottom bars and the embedded part are pre-embedded in the prefabricated concrete layer. The embedded part is connected with the steel beam. According to the full-prefabricated floor,through effective connection with a steel structure main body, the structural integrality and shock resistance are improved, meanwhile, only a joint laminated layer needs to be cast in situ, and thefabricated efficiency is greatly improved, so that the full-prefabricated floor can play a significant role in the fabricated steel structure field.

Description

【Technical field】 [0001] The invention relates to a floor slab, in particular to a fully prefabricated floor slab dedicated to an assembled steel structure, which belongs to the technical field of assembled buildings. 【Background technique】 [0002] Pushed by national policies, prefabricated steel structure buildings have become a development trend. At present, the domestic steel structure itself is relatively mature, but the three-plate system enclosure technology that matches the steel structure is relatively backward. [0003] As one of the three-slab system floor systems, the existing steel structure floor slabs mainly include the following methods: 1. Traditional on-site formwork cast-in-place, not only a large number of scaffolding supports, formwork operations, on-site steel bar binding operations and on-site concrete wet operations , and it is necessary to wait for the next floor to be cured before pouring the upper floor, which is laborious and labor-intensive and a...

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Problems solved by technology

[0002] Pushed by national policies, prefabricated steel structure buildings have become a development trend. At present, the domestic steel structure itself is relatively mature, but the three-plate system enclosure technology that matches the steel structure is relatively backward

[0003] As one of the three-slab system floor systems, the existing steel structure floor slabs mainly include the following methods: 1. Traditional on-site formwork cast-in-place, not only a large number of scaffolding supports, formwork operations, on-site steel bar binding operations and on-site concrete wet operations , and it is necessary to wait for the next floor to be cured before pouring the upper floor, which is laborious and labor-intensive and affects the construction progress; 2. The profiled steel plate concrete composite floor has a rib height of 51-76mm, and the uneven floor is difficult for residents to accept , can only be dealt with through the suspended ceiling, and the bottom steel plate is used as a permanent formwork to participate in the force and cannot be removed. Its fire prevention and corrosion problems are difficult to solve, and the on-site reinforcement work is still large, which does not meet the construction requirements of "fabricated construction"; 3. When the steel truss floor deck is used in steel structure residential buildings, the steel plate base form needs to be removed because the floor roof is plastered and painted. It is destroyed by external force, and the demolition process is labor-intensive. In the current situation of high labor costs, the demolition cost is high, and the bottom form cannot be recycled, which also increases the cost; 4. Most of the concrete laminated floors are used in prefabricated Concrete engineering, and there are a lot of on-site steel bar binding and wet work, and because there is no good solution for its connection with steel structures, its application and development in steel structure engineering is limited

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