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Self-formwork cast-in-place floor and construction method thereof

A construction method and technology of cast-in-place floor slabs, which are applied in the field of construction, can solve problems such as the inability to use cast-in-place floor slabs for construction, and achieve the effects of saving material costs and labor costs, increasing strength, and improving stability and strength

Inactive Publication Date: 2021-05-28
重庆心乐璟科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned schemes all require the help of I-shaped steel beams to complete the formwork, but many buildings do not use steel beam structures, and this method cannot be used for formwork support and cast-in-place slab construction

Method used

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  • Self-formwork cast-in-place floor and construction method thereof
  • Self-formwork cast-in-place floor and construction method thereof
  • Self-formwork cast-in-place floor and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] As shown in the figure, the present invention provides a construction method for self-supporting formwork cast-in-place slabs, including the following construction steps:

[0047] (1) Firstly, prepare steel bars, steel wire mesh, bottom formwork, side formwork, steel sheets, nuts 16 and concrete mortar.

[0048] (2) According to the design specifications, cut and make several bottom transverse bars 2, bottom longitudinal bars 3, upper transverse bars 4, and upper longitudinal bars 5 according to the design specifications.

[0049] (3) According to the design specifications, five steel bars are cut and made with steel bars for making the triangular overlapping frame 6; first, three of the steel bars are welded into a triangle, and one of the horizontal side steel bars prepared to be placed on the lower side is used as the bottom edge 8, Then set two points on the bottom edge 8, and make the position of these two points place can divide this bottom edge steel bar into thr...

Embodiment 2

[0064] On the basis of Example 1, step ⒃ is divided into two steps to pour concrete mortar, which can make the bottomless formwork system more stable, namely:

[0065] ⒃ The first step is to use concrete mortar to bury the steel wire mesh, the bottom reinforcement mesh, the bottom edge of the triangular overlapping frame 6 and the square rod 9 of the square connecting frame 7, and then vibrate and maintain until the specified design strength is reached.

[0066] ⒄Then carry out the second step of pouring, tying the steel wire mesh above the upper horizontal bar 4, and then pouring concrete mortar until the upper steel wire mesh is buried, then ramming and curing, and the construction is completed after reaching the strength.

Embodiment 3

[0068] As shown in the figure, the present invention provides a construction method for self-supporting formwork cast-in-place slabs, including the following construction steps:

[0069] Cast reinforced concrete floor slabs on the building where the beams and longitudinal beams have been built. The overhead length of the beams is 3500mm and the width is 250mm, and the overhead length of the longitudinal beams is 5000mm and the width is 250mm.

[0070] (1) Firstly, prepare steel bars, steel wire mesh, bottom formwork, side formwork, steel sheets, nuts 16 and concrete mortar. The diameter of the steel bar is 15mm, and the inner diameter of the nut is 15mm.

[0071] (2) According to the design specifications, cut and manufacture several bottom transverse bars 2 with a length of 3750mm, bottom longitudinal bars 3 with a length of 5250mm, upper transverse bars 4 with a length of 3750mm, and upper longitudinal bars 5 with a length of 5250mm.

[0072] (3) Cut and manufacture five st...

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Abstract

The invention discloses a self-formwork cast-in-place floor and a construction method thereof, and belongs to the technical field of buildings. The floor comprises a steel bar truss which comprises longitudinal and transverse steel bars, triangular overlapping frames and frame-shaped connecting frames, each triangular overlapping frame is composed of six triangles which are integrated and overlapped with one another, each frame-shaped connecting frame is formed by bending a steel bar, a self-formwork system is formed by fixing an inner-layer bottom formwork, an outer-layer bottom formwork and gasket strips on frame arms of the frame-shaped connecting frames in a mutually crossed manner, and the pouring is divided into two steps, and a bottom template for the front pouring is used as a bottom template for the rear pouring. The floor has the beneficial effects that the overall load force of the self-formwork system is increased, the formwork is erected on the whole by means of the structural characteristics of the steel bar truss of the self-formwork system, scaffold supporting is completely omitted, and material cost and labor cost are greatly saved; and the triangular overlapping frames and the frame-shaped connecting frames are adopted, so that the strength of the steel bar truss can be improved, and the triangular overlapping frames and the frame-shaped connecting frames can be used as hoisting and supporting parts of the bottom formwork to provide alternative supporting force for removing a scaffold.

Description

technical field [0001] The invention relates to the field of building technology, in particular to a self-supporting formwork cast-in-place floor slab and a construction method thereof. Background technique [0002] There are two common formwork support methods for cast-in-place slabs in buildings: one is to use specially pressed galvanized profiled steel plate floor slabs, which are directly laid on the steel beams as the bottom formwork for cast-in-place slabs, and will not be disassembled after construction is completed. The advantage is that the construction speed is fast, and the disadvantage is that the floor deck is used for one time, the cost is high, and the bottom surface of the floor slab is uneven and beautiful after completion, often requiring ceiling decoration. The other is to use wood formwork or steel formwork as the bottom formwork, and set up a scaffolding support system under the bottom formwork. The disadvantages are that the process of setting up the fo...

Claims

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Application Information

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IPC IPC(8): E04B5/32E04G11/36E04G11/48
CPCE04B5/32E04G11/36E04G11/48
Inventor 陈金红刘孟香陈光菊
Owner 重庆心乐璟科技有限公司
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