Cast-in-place concrete plus axillary wall aluminum alloy chamfering formwork support and fixing device and method

Abstract

The invention relates to a device and method for supporting and fixing a haunched wall aluminum alloy chamfering template during concrete casting in situ, in particular to a complete-set fabricated and recyclable device for supporting and fixing the haunched aluminum alloy template in mounting and dismounting during cast-in-situ concrete construction of a haunched part and a construction method ofthe device. The device comprises I-shaped supports, detachable pre-buried tapered sleeves, fastening bolts, fastening nuts, right-angle connecting pieces, connecting pins and dismounting tools matched with the tapered sleeves. The method comprises the steps that the tapered sleeves are connected with the I-shaped supports through screw rods, and the tapered sleeves are finely adjusted; the tapered sleeves are connected with the right-angle connecting pieces in a fastened mode through the fastening bolts and nuts, the right-angle connecting pieces are connected with the haunched template through the pins, and thus the supporting and reinforcing effects are achieved on the haunched template; and the I-shaped supports can adopt bottom plate reinforcement double-layer reinforcement meshes. According to the device and the method, the tapered sleeves, the fastening bolts and nuts can be detachably reused, the overall supporting and reinforcing structure is simple, the stability and reliability are achieved, materials are saved, the quality is ensured, and mounting and dismounting are quick.

Description

Technical field [0001] The invention relates to the technical field of construction of the cast-in-place concrete bottom plate and the haunched part of the wall panel, in particular to the installation and disassembly support and fixing device of the haunched aluminum alloy formwork during the in-situ concrete construction of the haunched part. The main components of the device can be made into a shaped product. Assembled, removable, and reusable after removal. Background technique [0002] Cast-in-place box concrete structures such as basements, rectangular integrated pipe corridors, pools, etc., are often designed to be reinforced at the junction of the bottom plate and the shear wall. When the bottom plate concrete is constructed, the reinforced part and a certain height of wall panels will be constructed at the same time. When using tool-type and prefabricated formwork such as aluminum alloy to construct the haunched part concrete, in order to speed up the turnover of the hau...

AI Technical Summary

Problems solved by technology

[0003] (1) The top support of the ten steel bars is higher than the concrete surface of the bottom slab, which needs to be made separately, and the amount of steel bars increases;

[0004] (2) After the top support of the ten steel bars is welded and fixed, it is difficult to adjust the height of the bottom surface of the chamfered formwork for the second time; when the formwork is removed after the concrete is solidified, oxygen cutting is required to remove the vertical steel bars on the concrete bottom surface. Incomplete cutting of the steel bars will hinder the removal of the chamfered formwork , forcible demolition will cause formwork damage, and exposed steel bars will increase the risk of injury to on-site construction personnel;

[0005] (3) Binding iron wires are tied to resist floating, which is easy to cause deformation of the formwork, and the anti-floating ability is poor; if the iron wires are not cut off the flat concrete floor surface when the formwork is removed, the outcropping or uncut iron wires will easily cause injury to the workers on site;

[0006] (4) Welded steel bars are not conducive to the secondary adjustment of the formwork due to the pressure and anti-floating of the welded steel bars, and the concrete floor surface must be leveled before the oxygen cutting to remove the top steel bars;

[0007] (5) When the surface of the existing concrete floor exceeds the surface of the chamfered formwork, the removal of the formwork with the chamfered haunches needs to be chiseled out of the concrete first, which is time-consuming and labor-intensive, which will cause the concrete surface of the bottom slab to be uneven and increase construction waste

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