CN209523472U - Steel reinforced concrete beam forms self-supporter system - Google Patents

Abstract

The utility model discloses a steel concrete beam formwork self-supporting system, which comprises a first connecting plate, the bottom of the first connecting plate is connected with the upper end of the second connecting plate, the second connecting plate is perpendicular to the first connecting plate, and the second The lower end of the connecting plate is connected with the third connecting plate parallel to the first connecting plate; the bottom sides of the second connecting plate are respectively provided with a plurality of mutually symmetrical first reinforcing bars, and the other ends of each first reinforcing bar are respectively connected to the third connecting plate. Both sides of the plate extend and are provided with second reinforcement perpendicular to the first reinforcement, and the lower ends of each second reinforcement pass through the formwork and each steel groove in turn and are sleeved with nuts. On the one hand, the utility model can effectively reduce the workload and construction difficulty; on the other hand, it is easy to install and disassemble, which ensures the construction quality while improving the efficiency, and reduces the labor intensity of the operators; on the other hand, the effective The stability of the frame is improved, and the safety hazards of high-altitude operations are avoided.

Description

Formwork self-supporting system for steel concrete beams

technical field

The utility model relates to the technical field of construction, in particular to a self-supporting system for steel concrete beam formwork.

Background technique

With the development of China's national economy and the acceleration of population urbanization, my country's housing construction continues to develop unprecedentedly, people's living conditions are gradually improving, and the requirements for living quality are getting higher and higher. China has become the first steel-producing country. Steel structure houses are suitable for mass production in factories. They have a high degree of industrialization and commercialization. They can integrate design, production, construction, and installation to improve the industrialization level of houses. Stiffened concrete has the advantages of high strength, small component cross-section size, strong binding force with concrete, saving concrete, increasing use space, reducing project cost, improving project quality, etc. Steel-concrete beams have been widely used, but in construction engineering In concrete construction, when steel concrete beams are used, it is usually in the case of a large floor height and a large span. When supporting, it is usually a conventional tall formwork support method. Due to the height of the storey itself and the large section size of the steel concrete itself, the self-weight is greater. If the method of adding vertical poles under the beam is adopted, the reinforcement under the beam will be completed. Support, this method adds the entire steel beam load to the entire system, and at the same time the densification of the vertical poles leads to an increase in workload. The actual construction on site is extremely difficult, and even some steel pipes cannot be erected normally. 1. It is difficult to set up, and it is inconvenient to install and disassemble. It is time-consuming and labor-intensive. The effect achieved will cause a huge load-bearing load to the entire support system, which is not satisfactory. Moreover, due to the high frame body, the stability is not good, the shaking is large, and the safety hazards of high-altitude operations are great. Construction personnel are prone to safety accidents when carrying out high-formwork construction.

Therefore, those skilled in the art are devoting themselves to developing a self-supporting system of steel concrete beam formwork that reduces the workload and erection difficulty while improving safety.

Utility model content

In view of the above-mentioned defects of the prior art, the technical problem to be solved by the utility model is to provide a self-supporting system of steel concrete beam formwork which reduces the workload and difficulty of erection while improving safety.

In order to achieve the above object, the utility model provides a self-supporting system of steel concrete beam formwork, comprising a first connecting plate, the bottom of the first connecting plate is connected to the upper end of the second connecting plate, and the upper end of the second connecting plate perpendicular to the first connecting plate, a third connecting plate parallel to the first connecting plate is connected to the lower end of the second connecting plate;

A formwork is provided directly below the third connecting plate, several square steels are provided at the bottom of the formwork, and several channel steels are provided directly below each of the square steels, each of the channel steels is arranged along the The length direction is evenly distributed and arranged at intervals; the bottom sides of the second connecting plate are respectively provided with a number of mutually symmetrical first reinforcing bars, and the other ends of each of the first reinforcing bars respectively extend to both sides of the third connecting plate And each is provided with a second steel bar perpendicular to the first steel bar, and the lower end of each second steel bar passes through the template and each of the steel channels in turn and is sleeved with a nut.

Preferably, the first connecting plate and the third connecting plate have the same structure and are arranged symmetrically, and the upper and lower ends of the second connecting plate are respectively located in the middle of the first connecting plate and the third connecting plate and The first connecting plate and the third connecting plate have the same length, and the first connecting plate, the second connecting plate and the third connecting plate are integrally formed.

Preferably, the thickness t of the template is 15 mm.

Preferably, each of the square steels has the same length as the formwork, and each of the square steels is distributed evenly and spaced along the width direction of the formwork.

Preferably, the length of each channel steel is the same as the width of the template.

Preferably, the number of the nuts is two.

Preferably, the steel channel includes a first connecting block, the two ends of the first connecting block are respectively provided with a second connecting block and a third connecting block perpendicular to the first connecting block, and the second connecting block At the same time, it is connected with each of the square steels, the nut is located under the third connecting block and attached to the third connecting block, and the second steel bar passes through the second connecting block and the second connecting block in sequence from top to bottom. The third connection block.

Preferably, the upper half of each second steel bar is respectively connected to two sides of the formwork, and each second steel bar is integrally formed with each of the first steel bars.

Preferably, a space is formed between two adjacent square steel bars, and the second steel bars located on both sides of the template are separated by a space.

Preferably, the diameters of the first steel bar and the second steel bar are 20 mm.

The beneficial effects of the utility model are: on the one hand, the utility model can effectively reduce the workload and construction difficulty; on the other hand, it is easy to install and disassemble, while improving the efficiency, the construction quality is guaranteed, and the labor of the operators is reduced. Strength; on the other hand, it effectively improves the stability of the frame and avoids the safety hazards of high-altitude operations.

Description of drawings

Fig. 1 is a schematic structural view of a specific embodiment of the present invention.

FIG. 2 is a schematic top view of the structure of FIG. 1 .

FIG. 3 is a schematic bottom view of the structure of FIG. 1 .

Fig. 4 is a left view structural diagram of Fig. 1 .

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

As shown in Figures 1 to 4, a steel concrete beam formwork self-supporting system includes a first connecting plate 1, the bottom of the first connecting plate 1 is connected to the upper end of the second connecting plate 2, and the second connecting plate 2 The plate 2 is perpendicular to the first connecting plate 1, and the lower end of the second connecting plate 2 is connected with a third connecting plate 3 parallel to the first connecting plate 1;

A formwork 5 is arranged directly below the third connecting plate 3, and several square steels 6 are arranged on the bottom of the formwork 5, and several channel steels 7 are arranged directly below each of the square steels 6, and each of the grooves The steel 7 is evenly distributed along the length direction of the template 5 and arranged at intervals; the bottom sides of the second connecting plate 2 are respectively provided with a plurality of mutually symmetrical first reinforcing bars 8, and the other ends of each of the first reinforcing bars 8 are respectively Extend to the both sides of described third connecting plate 3 and be provided with the second reinforcing bar 9 perpendicular to described first reinforcing bar 8, the lower end of each described second reinforcing bar 9 passes through described template 5 and each described formwork 5 successively. The steel channel 10 is also sleeved with nuts 11 .

The first connecting plate 1 and the third connecting plate 3 have the same structure and are arranged symmetrically, and the upper and lower ends of the second connecting plate 2 are respectively located in the middle of the first connecting plate 1 and the third connecting plate 3 And the lengths of the first connecting plate 1 and the third connecting plate 3 are the same, and the first connecting plate 1 , the second connecting plate 2 and the third connecting plate 3 are integrally formed I-beams.

The thickness t of the template 5 is 15 mm.

Each of the square steels 6 has the same length as the formwork 5 , and each of the square steels 6 is distributed evenly and spaced along the width direction of the formwork 5 .

The length of each channel steel 7 is the same as the width of the template 5 .

The number of the nuts 11 is two.

The steel channel 10 includes a first connecting block 12, the two ends of the first connecting block 12 are respectively provided with a second connecting block 13 and a third connecting block 15 perpendicular to the first connecting block 12, the first The two connecting blocks 13 are connected to each of the square steel bars 6 at the same time, the nut 11 is located below the third connecting block 15 and is attached to the third connecting block 15, and the second steel bar 9 is sequentially arranged from top to bottom Pass through the second connection block 13 and the third connection block 15 .

The upper half of each second steel bar 9 is respectively connected to two sides of the template 5 , and each second steel bar 9 and each first steel bar 8 are integrally formed.

A space 23 is formed between two adjacent square steel bars 6 , and the second steel bars 9 located on both sides of the template 5 are separated by a space 23 . The diameters of the first steel bars 8 and the second steel bars 9 are 20 mm.

This utility model aims at the problems of the current steel concrete beam support system. China Construction Seventh Bureau organizes technical research, combined with many years of construction experience, and after a lot of calculations and tests involved, a major technological breakthrough has been achieved, and finally the steel concrete beam has been successfully developed. The self-supporting support system system has formed a set of construction technology for the self-supporting support system of steel concrete beams, and has been successfully used in engineering construction. Because the overall load of the support system has been reduced, the safety factor of the support system has been increased, and the safety of the support system has been improved. The convenience of dismantling and operation reduces potential safety hazards, improves construction quality, and achieves better economic and social safety benefits.

Construction method characteristic of the present utility model:

1. This construction method has simple process, simple construction, reliable quality and wide application range;

2. The steel concrete beam support system provided by this construction method does not need to increase the distance between the vertical poles under the large cross-section beam, and also ensures the safety factor of the overall formwork frame, reducing potential safety hazards.

3. The steel concrete beam support system provided by this construction method has simple structural design, reliable force, convenient installation and disassembly, high work efficiency, large space for workers to work, convenient assembly and disassembly of formwork and formwork, fast support speed, and saves time and effort.

Scope of application of the present utility model:

This construction method is widely applicable to tall formwork support projects when the floor height is high and the space span is large, and it is difficult to use steel concrete beams to adopt conventional support methods.

Process principle of the present utility model:

1. The self-supporting support system of the steel concrete beam mainly uses the self-supporting effect of the steel concrete, and when it is deflected to a distance within the allowable range of the set code, it is jointly stressed with the support system.

2. The main method is to weld the steel bars of the first steel bar 8 with a diameter of 20mm and the second steel bar 9 on the flange of the profile steel, using double-sided welding, the size of the welding foot is 10mm, and the sub keel at the bottom of the beam uses 7 square steel bars 40×40×1.5mm.

3. The main keel adopts channel steel 7, and after the channel steel 7 is perforated 22mm, the second steel bar 9 with a diameter of 20mm passes through the channel steel, and then is locked with high-strength bolts.

Special note: 5-10mm deformation joints are reserved between the support frame body and the channel steel. When the beam is deflected after the concrete is poured, the steel is in contact with the support, and the force transmitted from the beam to the support will be less than that without deformation joints.

Construction process and key points of operation

1. Construction process

Construction preparation→section steel (the first connection plate 1, the second connection plate 2 and the third connection plate 3) welding reinforcement (the first reinforcement 8 and the second reinforcement 9)→the section steel hoisting in place→install the beam bottom formwork, side formwork→groove Steel 10 opening → initial installation of fixed channel steel and fastening bolts → insertion of square steel back corrugation → final fastening inspection of high-strength bolts → reserve 5-10mm deformation joints to install support frame body → pour concrete after acceptance

2. Operation points

2.1 Steel bar welding, formwork, channel steel perforation, section steel hoisting

(1) When the steel bar is welded, it should be strictly positioned according to the calculated welding spacing and position.

(2) When the channel steel 10 is perforated, it should be slightly larger than the outer diameter of the steel bar to facilitate penetration, and at the same time, the positioning hole should be strictly matched with the welding hole of the steel bar.

(3) When hoisting the section steel, it should be hoisted and fixed to the design position strictly to avoid the deformation of the welded steel bar collision during hoisting, which will make it difficult to install the bottom mold and channel steel in the later stage.

(4) The bottom mold should be installed by opening holes according to the position after the section steel is hoisted in place.

2.2 Installation of square steel, side formwork, and beam bottom and side brackets

(1) After the bottom mold is completed, install the side mold.

(3) When the channel steel is installed, the high-strength bolts are tightened for the first time, and enough space is reserved for easy insertion into the square steel back. (4) Fasten with bolts, and tighten the bolts upward at the same time.

(5) Set up the supporting frame body at the bottom of the shaped steel beam to ensure a space of 5-10mm, so as to make full use of the bearing capacity of the shaped steel beam itself.

(6) Finally tighten and check the self-supporting support system to ensure that the lower opening of the formwork will not leak when the concrete is poured.

2.3 After pouring steel concrete, formwork removal

After the self-supporting support system of the steel concrete beam is strengthened and the acceptance is passed, the concrete pouring construction can be carried out. After the strength of the concrete meets the strength requirements for formwork removal, the formwork can be removed. The removed formwork, channel steel, high-strength nuts and other materials can be reused repeatedly, saving materials, reducing consumption, and saving costs.

The preferred specific embodiments of the present utility model have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the present utility model without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the scope of protection defined by the claims .

Claims (10)

1. a kind of steel reinforced concrete beam forms self-supporter system, it is characterized in that: include the first connecting plate (1), first connection The bottom of plate (1) is connect with the upper end of the second connecting plate (2), and second connecting plate (2) is hung down with first connecting plate (1) Directly, the lower end of second connecting plate (2) is connected with the third connecting plate (3) parallel with the first connecting plate (1)；

It is provided with template (5) immediately below the third connecting plate (3), the bottom of the template (5) is provided with several square steel (6), several channel steels (7), length of each channel steel (7) along the template (5) are provided with immediately below each square steel (6) The setting of directional spreding uniform intervals；The two sides of the bottom of second connecting plate (2) be respectively arranged with several symmetrical the The other end of one reinforcing bar (8), each first reinforcing bar (8) extends and is respectively provided with to the two sides of the third connecting plate (3) respectively There is second reinforcing bar (9) vertical with the first reinforcing bar (8), the lower end of each second reinforcing bar (9) sequentially passes through the template (5) and each steel tank (10) and nut (11) are arranged with.

2. steel reinforced concrete beam forms self-supporter system as described in claim 1, it is characterized in that: first connecting plate (1) Identical and arranged symmetrically with the structure of the third connecting plate (3), the upper and lower ends of second connecting plate (2) are located at institute State the middle part of the first connecting plate (1) and third connecting plate (3) and with first connecting plate (1) and the third connecting plate (3) Length it is identical, first connecting plate (1), the second connecting plate (2) and third connecting plate (3) are one of the forming structure.

3. steel reinforced concrete beam forms self-supporter system as described in claim 1, it is characterized in that: the thickness t of the template (5) For 15mm.

4. steel reinforced concrete beam forms self-supporter system as described in claim 1, it is characterized in that: each square steel (6) and institute The length for stating template (5) is identical, and each square steel (6) is evenly distributed along the width direction of the template (5) and is spaced setting.

5. steel reinforced concrete beam forms self-supporter system as described in claim 1, it is characterized in that: the length of each channel steel (7) It spends of same size with the template (5).

6. steel reinforced concrete beam forms self-supporter system as described in claim 1, it is characterized in that: the number of the nut (11) It is two.

7. the steel reinforced concrete beam forms self-supporter system as described in claim 1 to 6 is any, it is characterized in that: the steel tank It (10) include the first link block (12), the both ends of first link block (12) are respectively arranged with and first link block (12) Vertical the second link block (13) and third link block (15), second link block (13) connect with each square steel (6) simultaneously It connects, the nut (11) is located at below the third link block (15) and is bonded with the third link block (15), described second Reinforcing bar (9) sequentially passes through second link block (13) and the third link block (15) from top to bottom.

8. steel reinforced concrete beam forms self-supporter system as described in claim 1, it is characterized in that: each second reinforcing bar (9) The upper half connect respectively with the two sides of the template (5), each second reinforcing bar (9) and each first reinforcing bar (8) are one Body shaped structure.

9. steel reinforced concrete beam forms self-supporter system as described in claim 1, it is characterized in that: each two adjacent square steel (6) vacancy (23) are formed between, are located between second reinforcing bar (9) of the template (5) two sides is carried out by a vacancy (23) Every.

10. steel reinforced concrete beam forms self-supporter system as described in claim 1, it is characterized in that: first reinforcing bar (8) and The diameter of second reinforcing bar (9) is 20mm.