CN113482327A

CN113482327A - Parapet formwork supporting method

Info

Publication number: CN113482327A
Application number: CN202110667008.3A
Authority: CN
Inventors: 张作为
Original assignee: MCC5 Group Shanghai Corp Ltd
Current assignee: MCC5 Group Shanghai Corp Ltd
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2021-10-08

Abstract

A parapet formwork method is characterized by comprising the following steps: a. after positioning and paying off, b, horizontally connecting a plurality of square timbers (3) to be placed in full length to serve as a back edge, enabling the first step distance between the square timbers and the bottom of a formwork to be smaller than or equal to 200mm, c, fixing the back edge on the upper, middle and lower portions of the formwork firmly by a plurality of counter-pulling screw rods (2), d, arranging a plurality of inclined strut devices (5), e, pouring concrete into a roof floor slab, f, curing the concrete of the parapet wall to strength, detaching the formwork (4) and the steel pipe (1), and cutting off the reinforcing steel bars of the cross-shaped reinforcing steel bar. The formwork method for the parapet has the advantages that the formwork structure is simple, the construction is convenient, the roof parapet can be poured together with the floor slab, the integrity is good, the root of the roof parapet is free from water seepage, the formwork supporting system is firm, the construction period is shortened, and the engineering cost is reduced.

Description

Parapet formwork supporting method

Technical Field

The invention relates to a formwork supporting method, in particular to a formwork supporting method for a parapet wall.

Background

Under the conventional condition, the parapet is poured and is reached the back formwork and pour of sufficient intensity at roof beam slab, and the time limit for a project is longer, pours simultaneously because of not simultaneously, causes the easy infiltration problem that appears in parapet root.

The known parapet formwork methods therefore suffer from the inconveniences and problems described above.

Disclosure of Invention

The invention aims to provide a safe and reliable parapet formwork supporting method.

In order to achieve the purpose, the technical solution of the invention is as follows:

a parapet formwork method is characterized by comprising the following steps:

a. after positioning and paying off, placing the template and the steel pipe at a preset position;

b. horizontally connecting a plurality of square timbers to be placed in a through length mode to serve as back ridges, placing the square timbers at a first step distance of less than or equal to 200mm from the bottom of a template, placing the square timbers at one step distance of 200mm upwards, and placing the square timbers at the top step distance of less than or equal to 200mm from the top of the template;

c. the back edge is firmly fixed on the upper, middle and lower parts of the template by a plurality of counter-pulling screw rods without shaking;

d. arranging a plurality of diagonal bracing devices, wherein each diagonal bracing device comprises a diagonal bracing steel pipe and a cross-shaped steel bar rod, one end of each cross-shaped steel bar rod is inserted into each diagonal bracing steel pipe, the corresponding other end of each cross-shaped steel bar rod is fixed in a roof floor slab, and the other end of each diagonal bracing steel pipe is fixed in the middle of a template;

e. pouring concrete on the roof floor slab, and pouring parapet concrete before final setting of the floor slab concrete;

f. and (4) after the parapet concrete is cured to strength, removing the template and the steel pipe, and cutting off the crossed reinforcing steel bar.

The parapet formwork erecting method can be further realized by adopting the following technical measures.

The method, wherein the diagonal struts are arranged every 450 mm.

In the method, the depth of the steel bar inserted into the steel pipe is more than or equal to 200 mm.

In the method, the cross-shaped reinforcing bar rod is formed by mutually and vertically welding two waste reinforcing bars with the diameter of 18 mm.

The method, wherein the steel pipe is a steel pipe with a diameter of 48 × 3.0 mm.

After the technical scheme is adopted, the parapet formwork method has the following advantages:

1. the formwork has simple structure and convenient construction;

2. the roof parapet can be poured together with the floor slab, the integrity is good, and the root of the roof parapet has no water seepage phenomenon;

3. the template support system is firm, saves the time limit for a project, reduces engineering cost.

Drawings

FIG. 1 is a schematic diagram of a template architecture of an embodiment of the present invention;

fig. 2 is a side view of fig. 1.

In the figure: 1 steel pipe, 2 split screw rods, 3 square timbers, 4 templates, 5 diagonal bracing devices, 6 roofing floorslabs and 7 parapet walls.

Detailed Description

The present invention will be further described with reference to the following examples and the accompanying drawings.

Example 1

The invention relates to a parapet formwork supporting method, which comprises the following steps of compiling a parapet formwork installation construction scheme before construction, determining formwork positions, back ridge intervals, steel pipe intervals, opposite-pull screw fixing positions and an inclined strut fixing mode according to the scheme:

a. after positioning and paying off, placing the template 4 and the steel pipe 1 at a preset position; referring now to fig. 1 and 2, fig. 1 is a schematic diagram of a template architecture according to an embodiment of the present invention, and fig. 2 is a side view of fig. 1.

b. Horizontally connecting a plurality of square timbers 3 for full length placement to serve as back ridges, placing the square timbers at the first step at intervals of 200mm from the bottom of the template, and placing the square timbers at the top at intervals of 200mm from the top of the template, wherein the distance between the square timbers at the first step is less than or equal to 200 mm;

c. the back edge is firmly fixed at the upper, middle and lower parts of the template by a plurality of counter-pulling screw rods 2 without shaking;

d. arranging a plurality of inclined strut devices 5, vertically welding two waste steel bars with the diameter of 18mm, inserting the waste steel bars into a steel pipe with the diameter of 48X3.0mm, wherein the depth of the steel pipe is more than or equal to 200mm, fixing one end of each inclined strut device in the middle of a template 4, fixing the other end of each inclined strut device in a roof floor 6, and arranging inclined strut bars at intervals of 450 mm;

e. the roof floor 6 is cast with concrete, and the parapet 7 is cast with concrete before the final setting of the floor.

f. And (3) after the concrete is cured to strength, removing the template 4 and the steel pipe 1, and cutting off the redundant phi 18 waste steel bars.

The method for supporting the parapet wall has the advantages that the parapet wall can be poured along with a roof floor, the later parapet wall formwork re-supporting pouring time is saved, the construction period is saved, meanwhile, the integrity of the parapet wall and the roof floor is guaranteed, the problem of water seepage at the root part of the parapet wall is prevented, the inclined strut of the formwork supporting system is fixed by adopting waste steel bars and is embedded in the floor, waste is avoided, and the material saving requirement is met.

The parapet formwork method is applied to the construction project of the Jiangxiang cooperative industrial park standard factory building, the effect is remarkable, the formwork supporting system is firm, the construction period is saved, and the method is praised by the supervision owner.

The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Accordingly, all equivalents are intended to fall within the scope of the invention, which is defined in the claims.

Claims

1. A parapet formwork method is characterized by comprising the following steps:

a. after positioning and paying off, placing the template (4) and the steel pipe (1) at preset positions;

b. horizontally connecting a plurality of square timbers (3) to be placed in a through length mode to serve as back ridges, placing the square timbers at a first step distance of less than or equal to 200mm from the bottom of a formwork, placing the square timbers at one step at an interval of 200mm upwards, and placing the square timbers at the top step distance of less than or equal to 200mm from the top of the formwork;

c. the back edge is firmly fixed on the upper, middle and lower parts of the template by a plurality of counter-pulling screw rods (2) without shaking;

d. arranging a plurality of diagonal bracing devices (5), wherein each diagonal bracing device comprises a diagonal bracing steel pipe and a cross-shaped steel bar rod, one end of each cross-shaped steel bar rod is inserted into each diagonal bracing steel pipe, the corresponding other end of each cross-shaped steel bar rod is fixed in a roof floor (6), and the other end of each diagonal bracing steel pipe is fixed in the middle of a template (4);

e. concrete is poured on the roof floor slab, and concrete of the parapet (6) is poured before the floor slab concrete is finally set;

f. and (3) after the parapet concrete is cured to strength, removing the template (4) and the steel pipe (1), and cutting off the reinforcing steel bars of the cross-shaped reinforcing steel bar rod.

2. A method of formwork a parapet wall as claimed in claim 1, wherein said diagonal braces are provided one diagonal brace every 450 mm.

3. A method for erecting a parapet wall according to claim 1, wherein the depth of insertion of said reinforcing bars into said steel pipe is 200mm or more.

4. A method for erecting a parapet wall as claimed in claim 1, wherein said cross-shaped bar is formed by two 18mm diameter bars welded perpendicularly to each other.

5. A method of formwork a parapet wall as claimed in claim 1, wherein said bracing steel tubes are Φ 48x3.0mm steel tubes.