CN212336734U - Slotting formwork structure for cast-in-situ stair step construction - Google Patents

Abstract

A slotting formwork structure for cast-in-place stair step construction relates to the field of building construction, in particular to a building pouring stair mold. Including side form and the terraced mould of building cast-in-place stair, the recess that has a rectangle is opened to the interior right angle department of every section bench of side form, and the lower extreme of terraced mould is embedded into in the recess, and one side sets up the side wood wedge in the recess, and one side bottom sets up the rectangle wood wedge in the recess in addition, and the top is provided with the oblique wood wedge, and side wood wedge and rectangle wood wedge, oblique wood wedge lie in terraced mould lower tip both sides respectively and press from both sides the terraced mould fastening and decide. The method solves the construction quality problems that the internal and external corners are not square and the verticality is poor and the like easily caused by an improper formwork supporting method in the cast-in-place stair step construction. The utility model discloses in the building engineering example, improved on the basis of former formwork reinforcement method, utilize fluting formwork structure, promoted stair construction quality of marking time. The structure is overall simple, easy to operate and high in stability.

Description

Slotting formwork structure for cast-in-situ stair step construction

Technical Field

The utility model relates to a construction field, concretely relates to building pouring stair mould.

Background

Stair treads are generally divided into three layers, namely an original concrete layer, a wood base layer and a solid wood tread. The cast-in-place floor can be manufactured according to the requirements and the using positions of the site. In the construction of constructional engineering, the problems that the construction quality problems of irregular internal and external corners, poor verticality and the like easily occur due to improper formwork supporting method in the prior art caused by the fact that the steps are distorted, the deviation of the section size is large and the appearance quality is poor after the step construction of the cast-in-place stair step is completed and the formwork is dismantled. Through carrying out detailed investigation and analysis on the stair step formwork and the external dimension deviation after the formwork is removed on the residential engineering construction site, the following general problems can be found: (1) the size deviation of the cross section of the adjacent stair step is large, the phenomenon of die running and die expansion is serious, and the overall impression quality and the construction of later-stage engineering are influenced. (2) The verticality of the stair step hanging mould is poor, and the internal and external corners are not square. (3) The formwork supporting process is complicated and difficult to operate. The rigidity at the node is difficult to guarantee. Through investigation and analysis, the main factors influencing the stair quality are that the rigidity and the stability of the stair hanging mould node are insufficient, and the phenomena of mould running, mould expansion and distortion are easy to occur in the pouring process.

Chinese patent document ZL2016204311362 discloses a closed combination stair template, and this patent is the cockscomb structure on one side at the side form of stair template, and two limits of cockscomb structure are mutually perpendicular, and one of them edge is equipped with the pin 5 that extends, and tread mould and kicking surface mould are installed on the side form, cooperate with two limits of cockscomb structure, be equipped with exhaust hole 6 on the tread mould, the hole of vibrating has and can dismantle, assemble, convenient transport, and tread and the kicking surface that the pouring formed are perpendicular high, and tread and kicking surface are comparatively level and smooth positive effect. But the patent structure is complicated, and the construction degree of difficulty is great.

SUMMERY OF THE UTILITY MODEL

The utility model provides a cast-in-place stair are marked time fluting formwork structure that construction used has solved cast-in-place stair and have marked time in the construction, because of the improper very easy construction quality problems such as negative and positive angle is squarely, hang down straightness difference that appear of formwork method.

The utility model discloses in the building engineering example, improved on the basis of former formwork reinforcement method, utilize fluting formwork structure, promoted stair construction quality of marking time. The structure is overall simple, easy to operate and high in stability.

In order to solve the above problem, the utility model adopts the following technical scheme: the slotting formwork structure for the cast-in-situ stair step construction comprises a side mold and a ladder mold for building the cast-in-situ stair, wherein a rectangular groove is formed in the inner right angle of each section of the ladder section of the side mold, the lower end of the ladder mold is embedded into the groove, a side wood wedge is arranged on one side in the groove, a rectangular wood wedge is arranged at the bottom of the other side in the groove, an oblique wood wedge is arranged at the top of the groove, and the side wood wedge, the rectangular wood wedge and the oblique wood wedge are respectively positioned on two sides of the lower end of the ladder mold to clamp and fix the ladder mold.

Furthermore, the slotting formwork structure used for the cast-in-place stair step construction further has the following characteristics: the oblique wood wedge is of a right-angled triangle structure, the right-angle edge of the oblique wood wedge is contacted with the edge of the port of the groove, and the oblique edge of the oblique wood wedge is contacted with the edge of the ladder model.

Furthermore, the slotting formwork structure used for the cast-in-place stair step construction further has the following characteristics: and battens are fixed at the positions of the grooves on the outer sides of the side dies.

The utility model discloses an improvement to traditional stair formwork technique of marking time has promoted stair construction quality and work efficiency generally. The concrete advantages are that: (1) the stair step is smooth and straight in edge angle after being demoulded, square in internal and external angles, small in size deviation and attractive in appearance quality. (2) The stair step has no die running and die expanding phenomenon after die stripping, shaving and chiseling treatment is not needed before the next procedure, the manual shaving and chiseling cost is saved, and the material waste is avoided. (3) The node is reinforced by the wooden wedge, so that the rigidity and stability of the node are improved, and the problems of die running, die expanding, distortion and the like in the pouring process are effectively avoided. (4) The installation and the removal are flexible, and the operation time and the difficulty are greatly saved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a side mold and a ladder mold mounting structure;

FIG. 3 is an enlarged partial view of the side die at the location of the recess;

figure 4 is a schematic view of a side form after installation of the batten.

The symbols in the drawings illustrate that: the building shear wall comprises a building shear wall body 1, a side die 2, a ladder die 3, a groove 4, a rectangular wood wedge 5, an inclined wood wedge 6, a side wood wedge 7 and battens 8.

Detailed Description

The present invention will be described in detail with reference to the preferred embodiments.

As shown in fig. 1-4, the slotting formwork structure for the cast-in-place stair step construction comprises a side form 2 and a ladder form 3 for building the cast-in-place stair, and is characterized in that a rectangular groove 4 is formed in the inner right angle of each section of the ladder section of the side form 2, the lower end of the ladder form 3 is embedded into the groove 4, a side wood wedge 7 is arranged on one side in the groove 4, a rectangular wood wedge 5 is arranged at the bottom of the other side in the groove 4, a tapered wood wedge 6 is arranged at the top of the groove, and the side wood wedge 7, the rectangular wood wedge 5 and the tapered wood wedge 6 are respectively positioned on two sides of the lower end of the ladder form 3 to clamp and fix the ladder. The oblique wooden wedge 6 is a right-angled triangle structure, the right-angle side of the oblique wooden wedge 6 is contacted with the edge of the port of the groove 4, and the oblique side of the oblique wooden wedge 6 is contacted with the edge of the ladder model 3. And battens 8 are fixed at the positions of the grooves 4 on the outer sides of the side dies 2, and the battens 8 are fixed through nails. After the cast-in-place stair is demolded, the edges and corners are straight, the internal and external corners are square, the size deviation is small, and the appearance quality is attractive. The die is not expanded after being removed, the die is not twisted, and the die is not required to be processed before the next procedure, so that the manual shaving cost is saved, and the waste of materials is avoided.

The utility model discloses it is not enough to current house stair hang mould node rigidity and stability, pours the in-process and easily takes place to run the mould, expand mould and distortion phenomenon, the utility model discloses improve the former reinforcement method of stair, carry out the fluting to the stair side form and handle, utilize wooden wedge and nail to consolidate to the side form.

The utility model discloses concrete construction process: (1) drawing and checking, wherein a manufacturer is familiar with drawing, dimension, appearance, style and steps, and carries out technical background on field operators. (2) The material selects a 15mm thick multilayer board, the template is processed and installed according to the construction drawing size, and the construction quality is tracked, checked and strictly controlled in the process. (3) And (5) on-site formwork erecting and reinforcing, and checking the size and the distortion of the step section and the firmness of the reinforcement of the node. Through actual monitoring, the installation rate is fast, and the node is firm, and overall stability is good. (4) Grooving and formwork supporting detail nodes: the distance between the opposite grooves is properly increased, and the left and the right are alternately fixed by wood wedges, so that the phenomena of looseness and inclination to one side of the stair side mold in the pouring process can be avoided. The wood wedge is used for reinforcing, the rigidity and the stability of the wood wedge can be enhanced, the wood wedge is flexible to install and dismantle, the operation is simple, and the operation difficulty and time are greatly saved.

Claims (3)

1. The slotting formwork structure for the cast-in-place stair step construction comprises a side mold and a ladder mold for building the cast-in-place stair, and is characterized in that a groove with a rectangle is formed in the inner right angle of each section of the ladder section of the side mold, the lower end of the ladder mold is embedded into the groove, a side wood wedge is arranged on one side in the groove, a rectangular wood wedge is arranged at the bottom of the other side in the groove, an oblique wood wedge is arranged at the top of the groove, the side wood wedge and the rectangular wood wedge and the oblique wood wedge are respectively located on two sides of the lower end of the ladder mold, and the ladder mold is clamped.

2. A grooved formwork support structure for use in cast-in-place stair step construction as claimed in claim 1, wherein the wall wedge is a right triangle, the wall wedge edge is in contact with the groove port edge, and the wall wedge edge is in contact with the formwork edge.

3. A grooved formwork structure for use in cast-in-place stair step construction according to claim 1, wherein battens are fixed to the outer sides of the side forms at positions where the grooves are located.

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