Split bolt casing pipe device for building

Abstract

The invention provides a split bolt casing pipe device for building. The split bolt casing pipe device comprises a casing pipe, end bolts, supporting pieces, springs and sealing rings. The end bolts are screwed at the two ends of the casing pipe through threads, the supporting pieces are further fixed at the two ends of the casing pipe, sealing grooves are formed between the supporting pieces and the casing pipe, and the springs and the sealing rings are arranged in the sealing grooves. The split bolt casing pipe device has the beneficial effects that the structure is simple, using is convenient, formwork positioning is precise, and the thickness of a steel bar protecting layer in the construction process can be effectively controlled. The end bolts can be directly taken out after concrete pouring construction is completed, gas-welding cutting is not needed, labor and working hours are saved, and the end bolts can be repeatedly used, so that materials are saved. The casing pipe is adjustable in length and suitable for pouring of concrete structures with various thicknesses. In addition, sealing slurry-leakage-preventing structures are arranged at the ends, in contact with boards, of the supporting pieces, on the one hand, the situation that the end bolts are bonded and fixed by leaking slurry and cannot be easily taken out is avoided, and on the other hand, the wall surface quality can be guaranteed.

Description

technical field [0001] The invention relates to the construction field, in particular to a tension bolt casing device for construction. Background technique [0002] In the process of pouring the main structure, the control of the reinforced protective layer of columns and shear walls has always been a key point in the main construction process. In previous projects, pads have been used to control the reinforced protective layer. This method has the following defects: During formwork installation, pads are easily disturbed, damaged or displaced. The fastening process and concrete pouring process after the formwork installation are also likely to cause damage or displacement of the pads, making the thickness of the reinforcement protective layer insufficient, resulting in quality defects in structural components. [0003] In order to solve the above-mentioned deficiencies in the prior art, many existing projects have begun to use preset pull bolt casings to position the form...

AI Technical Summary

Problems solved by technology

[0002] In the process of pouring the main structure, the control of the reinforced protective layer of columns and shear walls has always been a key point in the main construction process. In previous projects, pads have been used to control the reinforced protective layer. This method has the following defects: During formwork installation, pads are easily disturbed, damaged or displaced

However, the length of the preset sleeve is often not adjustable, and it is not universal

In addition, after the concrete is poured, it is necessary to cut the tension bolts exposed outside the concrete, which is labor-intensive and material-intensive.

At the same time, the joints between the formwork and the pull bolts are also prone to grout leakage, causing surface defects on the wall

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