WO2023124243A1

WO2023124243A1 - Formwork reinforcing system for circular concrete structure, and mounting method therefor

Info

Publication number: WO2023124243A1
Application number: PCT/CN2022/118863
Authority: WO
Inventors: 吴光玉; 梅英宝; 尤雪春; 薛智瑶; 韩德成; 孙宇杰
Original assignee: 上海建工七建集团有限公司
Priority date: 2021-12-30
Filing date: 2022-09-15
Publication date: 2023-07-06
Also published as: CN114352004A

Abstract

Provided in the present invention are a formwork reinforcing system for a circular concrete structure, and a mounting method therefor. In the present invention, a formwork at the intersection of a circular concrete structure and an external wall is reinforced by means of a corner waling assembly, so as to prevent phenomena such as large-scale formwork swelling and slurry leakage from forming at such a position during concrete pouring, and thus avoiding quality defects such as non-compact concrete and voids and pits at such a position caused thereby. The formwork reinforcing system for a circular concrete structure in the present invention can achieve the accurate formation of a circular concrete structure and a surrounding external wall adjacent thereto, can be constructed on site conveniently and quickly, and has a low construction difficulty and a good implementation effect. Especially in a building with high requirements regarding the flatness, angle and positioning of an arc-shaped structure, the formwork reinforcing system can effectively control a structural deviation. The present invention is convenient to mount and well-integrated, and has a high practicability, safety and stability.

Description

Formwork reinforcement system and installation method for concrete circular structure

technical field

The invention relates to a formwork reinforcement system of a circular concrete structure and an installation method thereof.

Background technique

The traditional formwork reinforcement for a circular cylinder is suitable for the formwork reinforcement for a single circular cylinder structure.

When the circular structure is connected with other structures such as walls and poured as a whole, the traditional reinforcement method cannot meet the structural size requirements of the concrete, nor can it meet the safety requirements of the formwork during the construction process.

Contents of the invention

The object of the present invention is to provide a formwork reinforcement system for a circular concrete structure and an installation method thereof.

In order to solve the above problems, the present invention provides a formwork reinforcement system for circular concrete structures, including:

The inner formwork section of the concrete circular structure to be poured, and the inner formwork sections are sequentially spliced into a circle;

The outer formwork section of the concrete circular structure to be poured, and the outer formwork sections are sequentially spliced into multiple arcs;

The wall formwork of the outer wall to be poured, the wall formwork is adjacent to the outer formwork section;

Angle-shaped back flute assembly, which is arranged at the junction of the wall formwork of the outer wall to be poured and the outer formwork section of the adjacent concrete circular structure or the adjacent outer wall to be poured The junction of the wall formwork.

Further, in the formwork reinforcement system of the above-mentioned circular concrete structure, the outer formwork section and the inner formwork section opposite to each other are connected by tension screws.

Further, in the formwork reinforcement system for the above-mentioned circular concrete structure, the corner back corrugated component includes two back corrugated boards.

Further, in the formwork reinforcement system of the above-mentioned circular concrete structure, the section formed by splicing the two back corrugated boards of the angular back corrugated component is close to an acute angle or an obtuse angle.

Further, in the formwork reinforcement system of the above-mentioned circular concrete structure, a back corrugated plate of an angle-shaped back corrugated component is connected with the inner formwork segment at the opposite position through a pull bolt, and the other back corrugated block of the angle-shaped back corrugated component The plate is connected to a back corrugated plate of other angle back corrugated plates at the opposite position through pull bolts; or,

The two back corrugated boards of one corner back corrugated component are respectively connected to the inner formwork section at the opposite position through pull bolts.

Further, in the formwork reinforcement system of the above-mentioned circular concrete structure, the angular back corrugated component also includes: wooden triangles and wooden square inner supports, wherein the wooden triangles are arranged between the outer wall body to be poured and the concrete circle At the junction corner of the shaped structure or the junction corner of the adjacent outer wall to be poured, the top of the acute angle or obtuse angle spliced by the two back corrugated boards of the angular back corrugated component is connected with the wooden triangle; The wooden square internal support is connected between the two back corrugated boards of the angle-shaped back corrugated component.

Further, in the formwork reinforcement system of the above-mentioned circular concrete structure, the side walls of the inner formwork section and the outer formwork section are respectively provided with multiple arc-shaped circular hoops.

Further, in the formwork reinforcement system of the above-mentioned circular concrete structure, a turnbuckle joint tightening member is provided at the joint of each arc-shaped circular hoop.

Furthermore, in the formwork reinforcement system of the above-mentioned circular concrete structure, the tension members of the turnbuckle joints of two adjacent arc-shaped circular hoops are arranged in a staggered manner.

According to another aspect of the present invention, there is also provided a method for installing a formwork reinforcement system of a circular concrete structure, characterized in that, the formwork reinforcement system of a circular concrete structure described in any one of the above is used, and the method includes:

For the formwork of the concrete circular structure area, the size of each inner formwork section and outer formwork section is measured and calculated manually, and the customized processing is carried out according to the result of the sample turning and sent to the site;

According to the design drawings, carry out the construction of the reinforcement works in the concrete circular structure area. After the concealed acceptance is passed, the construction of the inner formwork section and the outer formwork section of the concrete circular structure area will be carried out, and the inner formwork sections will be respectively fixed by arc-shaped large steel bar hoops. And the outer formwork section, double-sided welding is performed on the lap joint of the arc-shaped steel bar hoop, so that the lap joint directly reaches five times the diameter of the arc-shaped steel bar hoop;

According to the sharp and obtuse angles at the junction of the outer wall to be poured and the adjacent concrete circular structure or the sharp and obtuse angles at the junction of the adjacent outer wall to be poured, the wooden triangle is custom-made, and the wooden The triangle is tightly wedged to the junction corner of the outer wall to be poured and the concrete circular structure or the junction corner of the adjacent outer wall to be poured; The junction of the wall formwork and the outer formwork section of the adjacent concrete circular structure or the junction of the wall formwork of the adjacent outer wall to be poured is reinforced, wherein the back corrugated board and the The wooden triangle is tightly fixed to the sharp angle at the junction of the wall formwork of the outer wall to be poured and the outer formwork section of the adjacent concrete circular structure or the junction of the wall formwork of the adjacent outer wall to be poured or obtuse angles.

Compared with the prior art, the present invention has the following beneficial effects:

1. The present invention can effectively control the structural deviation, so that the formwork has good integrity, safety and stability. It effectively solves the difficult problem of high-precision and difficult construction of similar circular structures such as reactor cabin cylinders, and is widely applicable to similar projects.

2. The circular concrete structure and other forms of structure such as the outer wall can be poured as a whole, so that the building has a good integrity. Compared with the traditional steel tube and wood square reinforcement system, the overall reinforcement system of the round mold is adopted, and the force is uniform, the reinforcement is safe and convenient, and the precision is high.

3. The material of the concrete circular structure system is simple, and most of them are processed and manufactured on-site ready-made materials, which solve the difficulties of small construction space, complex environment and high difficulty. The structural concrete can be poured as a whole to save construction time and cost.

4. Reinforce the acute and obtuse angles at the junction of the concrete circular structure and the straight wall. The end of the junction is processed according to the size of the sharp and obtuse angles to make a wooden triangle, which is tightly wedged to the end head; the back corrugated is used for the round mold end and the junction. The straight wall ends are reinforced; the back corrugated and wooden triangles are tightly fixed at the sharp and obtuse corners of the junction with wooden square inner supports to achieve the stabilization effect of the formwork system.

5. At the junction of the circular concrete structure area and the outer wall, the arc-shaped steel hoops are opened with elliptical counter-perforations through the calculation of carpentry; Pull and tighten to ensure the stability of the reinforcement. The round hoop joints are misplaced to avoid uneven force.

Description of drawings

Fig. 1 is the overall schematic diagram of the formwork reinforcing system of the concrete circular structure of an embodiment of the present invention;

Fig. 2 is the schematic diagram of the angle type back corrugated assembly of A area in Fig. 1;

Fig. 3 is a schematic diagram of a turnbuckle joint tightening member according to an embodiment of the present invention.

Detailed ways

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, the present invention provides a formwork reinforcement system for a circular concrete structure, comprising:

The inner formwork section 1 of the concrete circular structure to be poured, the inner formwork section 1 is sequentially spliced into a circle, and a layer of formwork is attached to the inner formwork section indicated in the A area, and the strengthening treatment of the related area is carried out;

The outer formwork section 2 of the concrete circular structure to be poured, the outer formwork section 2 is sequentially spliced into a custom-processed multi-section arc typesetting according to the structural form;

Here, concrete can be poured in the space enclosed by the inner formwork section and the outer formwork section to form a concrete circular structure;

The wall formwork 3 of the external wall to be poured, the wall formwork 3 is adjacent to and intersects with the external formwork section 2;

Angle-shaped back flute assembly 4, which is arranged at the junction of the wall formwork 3 of the outer wall to be poured and the adjacent concrete circular structure outer formwork section 2 or adjacent to the outer wall to be poured Wall formwork junction.

Here, according to the corresponding size of the thick concrete circular structure, after typesetting, the inner formwork section and the outer formwork section can be divided into blocks and sent to the site. After the reinforcement of the concrete circular structure is bound, the inner formwork section and the outer formwork segment assembly.

The present invention reinforces the formwork at the junction of the concrete circular structure and the outer wall through the corner-shaped back corrugated components, preventing large-scale mold expansion and grout leakage at this position during concrete pouring, thereby causing the concrete at this position to fail. It is dense, forming quality defects such as honeycomb pockmarks, effectively ensuring the high standard quality of the arc structure and its intersecting wall structure and junction structure. The formwork reinforcement system of the concrete circular structure of the present invention can realize the precise molding of the concrete circular structure and its surrounding adjacent outer walls, not only convenient and fast on-site construction, low construction difficulty, but also good implementation effect, and can effectively control the structure deviation. Easy installation, good integrity, good practicability, safety and stability.

The invention can well control the structural deviation of the concrete, the material is simple, the whole reinforcement is evenly stressed, and the positioning accuracy is high, especially for the construction of a high-precision circular stack structure similar to a nuclear power reactor, it has good practicability and safety.

As shown in FIG. 1 , in an embodiment of the formwork reinforcement system of the circular concrete structure of the present invention, the outer formwork section is connected to the inner formwork section opposite to it by a tension screw 5 .

As shown in FIG. 2 , in an embodiment of the formwork reinforcement system for circular concrete structures of the present invention, the corner back corrugated component 4 includes two back corrugated boards 41 .

In an embodiment of the formwork reinforcement system for circular concrete structures of the present invention, the cross section formed by splicing the two back corrugated boards 41 of the corner back corrugated component is close to an acute angle or an obtuse angle, so as to meet the pouring requirements of different corner angles.

Here, the round hoop can be placed at the junction of the concrete circular structure and the outer wall, and through the calculation of carpentry, an elliptical pair of perforations can be opened, and the round hoop and the back flute can be connected by double tension bolts.

In an embodiment of the formwork reinforcement system of the concrete circular structure of the present invention, a back corrugated plate 42 of an angle-shaped back corrugated assembly is connected with the inner formwork section 1 of the opposite position through the pull bolt 5, and the corner-shaped back corrugated assembly Another back corrugated block plate 42 is connected with a back corrugated plate of other angle-shaped back corrugated 42 at the opposite position through the pull bolt 5 .

In an embodiment of the formwork reinforcement system of the circular concrete structure of the present invention, two back corrugated boards 42 of an angled back corrugated assembly are respectively connected to the inner formwork section 1 at the opposite position through pull bolts.

As shown in Figure 2, in an embodiment of the formwork reinforcement system of the concrete circular structure of the present invention, the angle-shaped back corrugated assembly 4 also includes: a wooden triangle 41 and a wooden square inner support 43, wherein the wooden triangle 41 It is arranged at the junction corner of the outer wall to be poured and the concrete circular structure or at the junction corner of the adjacent outer wall to be poured. The two back flute boards 42 of the corner back flute assembly 4 are spliced into The top of the acute angle or the obtuse angle is connected with the wooden triangle; the wooden square inner support 43 is connected between the two back corrugated boards 42 of the angular back corrugated assembly 4 .

In an embodiment of the formwork reinforcement system for circular concrete structures of the present invention, the side walls of the inner formwork section 1 and the outer formwork section 2 are respectively provided with a plurality of arc-shaped steel bar hoops 6 .

Here, the arc-shaped steel bar round hoop can use the existing steel bar material on the construction site. According to the arc size of the concrete circular structure, the arc-shaped steel bar can be bent on site; pieces.

As shown in Fig. 3, in an embodiment of the formwork reinforcement system of the concrete circular structure of the present invention, a turnbuckle joint tightening member 7 is provided at the joint of each arc-shaped steel bar round hoop 6 .

Here, the round hoop is tightened with turnbuckle joints, which are tightened under tension to ensure the stability of the reinforcement. The turnbuckle joint tightening parts of two adjacent arc-shaped steel bar hoops 6 are arranged in a staggered manner.

The present invention also provides a method for installing a formwork reinforcement system of a circular concrete structure, using the formwork reinforcement system of a circular concrete structure described in any of the above embodiments, the method comprising:

Step S1, for the formwork in the concrete circular structure area, the size of each inner formwork section and outer formwork section is calculated by manually turning over the sample, and the customized processing is carried out according to the turning over result and sent to the site;

Step S2, according to the design drawings, carry out the construction of the reinforcement works in the concrete circular structure area, and after the concealed acceptance is qualified, carry out the construction of the inner formwork section and the outer formwork section of the concrete circular structure area, and use arc-shaped large steel bar hoops to fix them respectively The inner formwork section and the outer formwork section are formed by double-sided welding of the overlapping joints of arc-shaped steel bar hoops, so that the lap joints directly reach five times the diameter of the arc-shaped steel bar hoops;

Step S3, according to the sharp and obtuse angles at the junction of the outer wall to be poured and the adjacent concrete circular structure or the sharp and obtuse angles at the junction of the adjacent outer wall to be poured, custom processing and making wooden triangles , wedge the wooden triangle tightly to the junction corner of the outer wall to be poured and the concrete circular structure or the junction corner of the adjacent outer wall to be poured; The junction of the wall formwork of the wall and the outer formwork section of the adjacent concrete circular structure or the junction of the wall formwork of the adjacent outer wall to be poured is reinforced, wherein the wooden square internal support is used to support the back The corrugated board and the wooden triangle are tightly fixed at the junction of the wall formwork of the outer wall to be poured and the outer formwork section of the adjacent concrete circular structure or the junction of the wall formwork of the adjacent outer wall to be poured At the sharp and obtuse angles, the stabilization effect of the formwork system is achieved.

Here, after the concrete circular structure area is reinforced with arc-shaped steel hoops, the key is to strengthen the acute and obtuse angles at the junction of the concrete circular structure and the formwork of the outer wall.

1. It can effectively control the structural deviation, so that the formwork has good integrity, safety and stability. It effectively solves the difficult problem of high-precision and difficult construction of similar circular structures such as reactor cabin cylinders, and is widely applicable to similar projects.

2. The circular structure and other structures can be poured as a whole, so that the building has a good integrity. Compared with the traditional steel tube and wood square reinforcement system, the overall reinforcement system of the round mold is adopted, and the force is uniform, the reinforcement is safe and convenient, and the precision is high.

3. The materials of the circular structure system are simple, and most of them are processed and manufactured on-site ready-made materials, which solve the difficulties of small construction space, complex environment and high difficulty. The structural concrete can be poured as a whole to save construction time and cost.

5. At the junction of the circular concrete structure area and the outer wall, the arc-shaped steel hoops are opened with elliptical counter-perforations through the calculation of carpentry; Pull and tighten to ensure the stability of the reinforcement. The joints of the two steel bar round hoops are misplaced to avoid uneven force.

For detailed content of each system embodiment of the present invention, refer to corresponding parts of each method embodiment for details, and details are not repeated here.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

Obviously, those skilled in the art can make various changes and modifications to the invention without departing from the spirit and scope of the invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and equivalent technologies thereof, the present invention also intends to include these modifications and variations.

Claims

A formwork reinforcement system for a circular concrete structure, characterized in that it includes:

The inner formwork section of the concrete circular structure to be poured, and the inner formwork sections are sequentially spliced into a circle;

The outer formwork section of the concrete circular structure to be poured, and the outer formwork sections are sequentially spliced into multiple arcs;

The wall formwork of the outer wall to be poured, the wall formwork is adjacent to the outer formwork section;

Angle-shaped back flute assembly, which is arranged at the junction of the wall formwork of the outer wall to be poured and the outer formwork section of the adjacent concrete circular structure or the adjacent outer wall to be poured The junction of the wall formwork.
The formwork reinforcement system for concrete circular structures according to claim 1, characterized in that, the outer formwork section is connected to the inner formwork section opposite to it by a tension screw.
The formwork reinforcement system for concrete circular structures according to claim 1, wherein the corner back corrugated component comprises two back corrugated boards.
The formwork reinforcement system for concrete circular structures according to claim 3, characterized in that, the section formed by splicing two back corrugated boards of the angular back corrugated component is close to an acute angle or an obtuse angle.
The formwork reinforcement system of concrete circular structure as claimed in claim 3, characterized in that, a back corrugated plate of an angle-shaped back corrugated component is connected with the inner formwork segment at the opposite position through a pull bolt, and the corner-shaped back corrugated component The other back corrugated board of the other corner is connected with a back corrugated board of the other angle-shaped back corrugated plate at the opposite position through the pull bolt; or,

The two back corrugated boards of one corner back corrugated component are respectively connected to the inner formwork section at the opposite position through pull bolts.
The formwork reinforcement system of the concrete circular structure according to claim 3, wherein the angle-shaped back corrugated component also includes: a wooden triangle and a wooden square inner support, wherein the wooden triangle is arranged on the to-be-cast At the junction corner of the outer wall and the concrete circular structure or the junction corner of the adjacent outer wall to be poured, the top of the acute or obtuse angle spliced by the two back corrugated boards of the corner back corrugated component and the Said wood triangular connection; the two back corrugated boards of the angle-shaped back corrugated component are connected to the wooden square inner support.
The formwork reinforcement system for circular concrete structures according to claim 1, wherein the side walls of the inner formwork section and the outer formwork section are respectively provided with a plurality of arc-shaped circular hoops.
The formwork reinforcement system for concrete circular structures as claimed in claim 7, characterized in that, a turnbuckle joint tightening member is arranged at the joint of each arc-shaped steel bar circle hoop.
The formwork reinforcement system for concrete circular structures according to claim 7, characterized in that the turnbuckle joint tension members of two adjacent arc-shaped steel bar circle hoops are arranged in a staggered manner.
A method for installing a formwork reinforcement system of a circular concrete structure, characterized in that the formwork reinforcement system of a circular concrete structure as described in any one of claims 1 to 9 is used, and the method includes:

For the formwork of the concrete circular structure area, the size of each inner formwork section and outer formwork section is measured and calculated manually, and the customized processing is carried out according to the result of the sample turning and sent to the site;

According to the design drawings, carry out the construction of the reinforcement works in the concrete circular structure area. After the concealed acceptance is passed, the construction of the inner formwork section and the outer formwork section of the concrete circular structure area will be carried out, and the inner formwork sections will be respectively fixed by arc-shaped large steel bar hoops. And the outer formwork section, double-sided welding is carried out on the overlapping part of the arc-shaped steel bar hoop, so that the lap joint directly reaches five times the diameter of the arc-shaped steel bar hoop;

According to the sharp and obtuse angles at the junction of the outer wall to be poured and the adjacent concrete circular structure or the sharp and obtuse angles at the junction of the adjacent outer wall to be poured, the wooden triangle is custom-made, and the wooden The triangle is tightly wedged to the junction corner of the outer wall to be poured and the concrete circular structure or the junction corner of the adjacent outer wall to be poured; The junction of the wall formwork and the outer formwork section of the adjacent concrete circular structure or the junction of the wall formwork of the adjacent outer wall to be poured is reinforced, wherein the back corrugated board and the The wooden triangle is tightly fixed to the sharp angle at the junction of the wall formwork of the outer wall to be poured and the outer formwork section of the adjacent concrete circular structure or the junction of the wall formwork of the adjacent outer wall to be poured or obtuse angles.