Manufacturing method of box girder

Abstract

The invention discloses a box girder manufacturing method which comprises the following steps that S10, a plurality of plate-type structures are manufactured, and each plate-type structure comprises a bottom plate, a top plate and a plurality of webs; s20, the bottom plate and the multiple web plates are all placed on a formwork, so that the bottoms of the multiple web plates are located on the two sides of the bottom plate correspondingly; s30, inner formworks are installed in the bottom plate and the multiple web plates, and concrete is poured to the bottom plate and the multiple web plates; s40, the top plate is installed so that the top plate can be arranged on the tops of the multiple web plates; and S50, concrete is poured to the top. According to the box girder manufacturing method, the multiple plate-type structures are manufactured, the multiple plate-type structures comprise the bottom plate, the top plate and the multiple web plates, compared with the mode that reinforcing steel bars are integrally bundled, factory production can be adopted for manufacturing the reinforcing steel bar cage through the multiple plate-type structures, batch and standardized production is achieved, and the construction efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of building construction, and in particular to a method for manufacturing a box beam. Background Art

[0002] Traditional construction consumes a lot of manpower and material resources, and the construction site needs to occupy a large amount of construction space. In urban centers with dense infrastructure, the available construction sites are increasingly limited, and intelligent construction and building industrialization are in urgent need of development. At present, one of the difficulties of building industrialization and intelligent construction is the difficulty of steel bar bundling and low production efficiency.

[0003] With the continuous advancement and innovation of engineering technology, new construction technologies have begun to be introduced in the field of construction, such as box girder technology. As a prefabricated component, box girder can not only increase construction speed and reduce on-site operation risks, but also ensure the quality and consistency of components.

[0004] At present, the production method of box beams is generally to tie the steel frame on the ground, lift it with a crane and accurately place it in the formwork. When tying the steel bars of the box beam, the overall bundled volume of the steel bars is usually large, and the installation after the overall bundling is completed will lead to low box beam production efficiency. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the defects in the prior art that the overall bundled steel bars have a large volume and that installation after the overall bundle is completed will lead to low box girder production efficiency, and a method for manufacturing a box girder is provided.

[0006] The present invention solves the above technical problems through the following technical solutions:

[0007] A method for manufacturing a box beam comprises the following steps:

[0008] S10, manufacturing a plurality of plate structures, wherein the plurality of plate structures include a bottom plate, a top plate and a plurality of web plates;

[0009] S20, placing the bottom plate and the plurality of webs on the template, so that the bottoms of the plurality of webs are respectively located on both sides of the bottom plate;

[0010] S30, installing an inner formwork in the U-shaped space surrounded by the bottom plate and the plurality of webs, and pouring and filling concrete inside the bottom plate and the plurality of webs;

[0011] S40, installing the top plate so that the top plate is disposed on top of a plurality of the web plates;

[0012] S50, pouring concrete onto the top plate.

[0013] In the present technical solution, a plurality of plate structures are manufactured through the box girder manufacturing method. The plurality of plate structures include a bottom plate, a top plate and a plurality of webs. Compared with bundling the steel bars as a whole, the steel cage is manufactured by dividing the plurality of plate structures into factory production, thereby realizing batch and standardized production and improving construction efficiency.

[0014] Preferably, the step S20 specifically includes the following steps: S21, hoisting the bottom plate to the bottom of the template; S22, hoisting a plurality of the webs to the two side templates of the template respectively.

[0015] In this solution, the bottom plate and the belly plate are placed into the mold by hoisting, which can save manpower and time, and can also reduce the risk of accidents caused by heavy object handling.

[0016] Preferably, after step S22 and before step S30, the following steps are also included: S23, closing the two side templates so that the plurality of webs are lifted upward and the bottoms of the plurality of webs are attached to the two sides of the bottom plate.

[0017] In this solution, the side formwork is closed to make the bottom of the web fit with the bottom plate and lifted at the same time, so as to meet the angle requirement between the web and the bottom plate when manufacturing the box girder.

[0018] Preferably, after step S23 and before step S30, the following steps are further included: S24, fixing the bottom plate to the bottoms of the plurality of webs.

[0019] In this solution, after placing the formwork and before pouring, by fixing the bottom junction of the bottom plate and the web, the junction can be better positioned while strengthening the connection strength between the bottom plate and the web, thereby improving the overall strength of the box girder.

[0020] Preferably, in the step S24: node reinforcement is inserted at a plurality of intersection nodes between the web plate and the bottom plate.

[0021] In this scheme, strengthening the connection between the web and the bottom plate by passing the node steel bars can achieve a strong connection with the parent material, ensure the stability and bearing capacity of the structure, and make it easy to control the construction quality and simple to operate, which can significantly improve work efficiency.

[0022] Preferably, in the step S30, when pouring concrete, the pouring height of the concrete shall not exceed the installation bottom elevation of the top plate.

[0023] In this solution, by ensuring that the concrete pouring height does not exceed the bottom elevation of the top plate, sufficient space can be left for installing the top plate, making the installation of the top plate convenient.

[0024] Preferably, the step S40 further includes the following steps: fixing the top plate to the tops of a plurality of the web plates.

[0025] In this solution, by fixing the top junction of the top plate and the web plate, the connection strength between the top plate and the web plate can be strengthened, thereby improving the overall strength of the box girder.

[0026] Preferably, in the step S40: node reinforcements are inserted at a plurality of intersection nodes between the web plates and the top plates.

[0027] In this scheme, strengthening the connection between the web and the top plate by passing the node steel bars can achieve a strong connection with the parent material, ensure the stability and bearing capacity of the structure, and make it easy to control the construction quality and simple to operate, which can significantly improve work efficiency.

[0028] Preferably, a reinforcement structure is provided between the top plate and the web plate.

[0029] In this solution, by providing a reinforcing structure between the top plate and the web plate, the connection strength between the top plate and the web plate can be improved, thereby further improving the overall strength of the box girder.

[0030] Preferably, the plate-type structure is a plate-type component steel cage.

[0031] In this scheme, the plate structure is a plate-type component steel cage, which can play a tensile role and restrain the main concrete of the box girder so that it can withstand a certain axial tension.

[0032] The positive and progressive effects of the present invention are:

[0033] Through the box girder manufacturing method, multiple plate structures can be manufactured, and the multiple plate structures include a bottom plate, a top plate and a plurality of webs. Compared with bundling the steel bars as a whole, the steel cages can be manufactured by dividing the multiple plate structures into factory production, realizing batch and standardized production and improving construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 Flow chart of the box girder manufacturing method according to an embodiment of the present invention

[0035] Figure 2 Flow chart of step S20 of the box girder manufacturing method according to an embodiment of the present invention

[0036] Figure 3 Schematic diagram of the plate-type component reinforcement cage and template in the box girder manufacturing method according to the embodiment of the present invention

[0037] Figure 4 Schematic diagram of step S21 in the box girder manufacturing method according to an embodiment of the present invention

[0038] Figure 5 Schematic diagram of step S22 in the box girder manufacturing method according to an embodiment of the present invention

[0039] Figure 6 Schematic diagram of step S22 in the box girder manufacturing method according to an embodiment of the present invention

[0040] Figure 7 Schematic diagram of step S23 in the box girder manufacturing method according to an embodiment of the present invention

[0041] Figure 8 Schematic diagram of the steel bars passing through the nodes in step S24 of the box girder manufacturing method according to an embodiment of the present invention

[0042] Fig. 9 Schematic diagram of step S30 in the box girder manufacturing method according to an embodiment of the present invention

[0043] Fig.10 Schematic diagram of step S40 in the box girder manufacturing method according to an embodiment of the present invention

[0044] Fig.11 Schematic diagram of the steel bars passing through the nodes in step S40 in the box girder manufacturing method according to an embodiment of the present invention

[0045] Fig.12 Schematic diagram of step S50 in the box beam manufacturing method according to an embodiment of the present invention

[0046] Fig.13 Schematic diagram of the top plate reinforcement structure in the box girder manufacturing method according to an embodiment of the present invention

[0047] Description of Reference Numerals

[0048] Plate structure 1

[0049] Bottom plate 11

[0050] Top plate 12

[0051] Belly 13

[0052] Template 2

[0053] Inner template 21

[0054] Side template 22

[0055] Node reinforcement 3

[0056] Strengthening structure 4

[0057] Crane 5

[0058] Box beam 6 DETAILED DESCRIPTION

[0059] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0060] like Figure 1 As shown, this embodiment discloses a method for manufacturing a box beam 6, and the method for manufacturing the box beam 6 includes the following steps:

[0061] S10 , manufacturing a plurality of plate structures 1 , wherein the plurality of plate structures 1 include a bottom plate 11 , a top plate 12 and a plurality of web plates 13 .

[0062] By manufacturing a plurality of plate structures 1, the plurality of plate structures 1 include a bottom plate 11, a top plate 12 and a plurality of webs 13. Compared with bundling the steel bars as a whole, the steel cages are manufactured by dividing the plurality of plate structures 1 into factory production, realizing batch and standardized production and improving construction efficiency.

[0063] Specifically, Figure 3 As shown, the plate structure 1 is a plate-type component steel cage. The plate-type component steel cage can play a tensile role and constrain the main body concrete of the box beam 6 so that it can withstand a certain axial tension.

[0064] S20, placing the bottom plate 11 and the plurality of webs 13 onto the template 2, so that the bottoms of the plurality of webs 13 are respectively located on both sides of the bottom plate 11;

[0065] Specifically, Figure 2 As shown, in step S20, the crane 5 is used for hoisting, which includes the following steps: S21, as Figure 4 As shown, the bottom plate 11 is hoisted to the bottom of the template 2; S22, as Figure 5 and Figure 6 As shown, several webs 13 are hoisted onto two side templates 22 of the template 2; S23, as shown Figure 7 As shown, close the two side templates 22 so that the plurality of webs 13 are lifted upward and the bottoms of the plurality of webs 13 are attached to the two sides of the bottom plate 11; S24, fix the bottom plate 11 and the plurality of webs 13.

[0066] In this way, by hoisting the bottom plate 11 and the web 13 into the mold, manpower and time can be saved, and the risk of accidents caused by heavy object handling can be reduced. By closing the side formwork 22, the bottom of the web 13 is lifted while being in contact with the bottom plate 11, so as to meet the angle requirement between the web 13 and the bottom plate 11 when the box girder 6 is manufactured. After the formwork 2 is placed and before pouring, by fixing the bottom junction of the bottom plate 11 and the web 13, the junction can be better positioned while strengthening the connection strength between the bottom plate 11 and the web 13, thereby improving the overall strength of the box girder 6.

[0067] Specifically, Figure 8As shown, in step S24: node reinforcement bars 3 are inserted at the intersection nodes between the webs 13 and the bottom plates 11. In other embodiments, those skilled in the art may also select other reinforcement methods that they deem appropriate.

[0068] In this way, by strengthening the connection between the web 13 and the bottom plate 11 by passing the node steel bars 3, a strong connection with the parent material can be achieved, the stability and bearing capacity of the structure can be ensured, and the construction quality is easy to control, the operation is simple, and the work efficiency can be significantly improved. In addition, passing the node steel bars 3 helps to ensure an effective connection between the beam and the column, improve the integrity and collaborative working ability of the structure. This approach can optimize the arrangement of the steel bars, reduce the density of the steel bars in the node area, thereby reducing the difficulty of construction and improving construction efficiency. By accurately controlling the position and anchorage length of the steel bars, structural weaknesses caused by improper arrangement of the steel bars can be avoided, the occurrence of cracks can be reduced, and the durability of the structure can be improved.

[0069] S30, such as Fig. 9 As shown, an inner formwork 21 is installed in a U-shaped space surrounded by the bottom plate 11 and a plurality of webs 13 , and concrete is poured and filled inside the bottom plate 11 and a plurality of webs 13 .

[0070] Specifically, in step S30 , when pouring concrete, the pouring height of the concrete shall not exceed the installation bottom elevation of the top plate 12 .

[0071] In this way, by pouring concrete at a height not exceeding the bottom elevation of the top plate 12, sufficient space can be reserved for installing the top plate 12, making the installation of the top plate 12 convenient.

[0072] S40, such as Fig.10 As shown, the top plate 12 is installed so that the top plate 12 is arranged on top of a plurality of webs 13.

[0073] Specifically, Fig.11 As shown, step S40 also includes the following steps: fixing the top plate 12 and the tops of the plurality of webs 13. Preferably, the top plate 12 and the webs 13 are fixed by passing the node reinforcement 3. Preferably, as Fig.13 As shown, a reinforcement structure 4 is provided between the top plate 12 and the web 13. The reinforcement structure 4 is a protrusion pointing toward the web 13 at the intersection of the top plate 12 and the web 13. In other embodiments, those skilled in the art may also select other reinforcement methods that they deem appropriate.

[0074] In this way, by fixing the top junction of the top plate 12 and the web 13, the connection strength between the top plate 12 and the web 13 can be strengthened, thereby improving the overall strength of the box girder 6. Strengthening the connection between the web 13 and the top plate 12 by passing the node steel bars 3 can achieve a strong connection with the parent material, ensure the stability and bearing capacity of the structure, and make it easy to control the construction quality, simple to operate, and significantly improve work efficiency. By arranging the reinforcement structure 4 between the top plate 12 and the web 13, the connection strength between the top plate 12 and the web 13 can be improved, further improving the overall strength of the box girder 6.

[0075] S50, such as Fig.12 As shown, concrete is poured to the top slab 12 .

[0076] The top plate 12 is installed and fixed by pouring concrete. At the same time, concrete is the main component material of the box beam 6. In the steel-concrete combination, the wrapping effect of concrete protects the internal steel bars from oxidation and corrosion. The two work together to optimize the mechanical properties of the material. In addition, the fine control during the concrete pouring process further ensures the density and uniformity of the concrete, which is crucial to preventing cracks and improving the overall performance of the structure. By pouring to form the solid structure of the box beam 6, the close combination of the various parts of the beam body can be achieved, ensuring that the beam body has the required shape and size, thereby completing the production of the box beam 6.

[0077] By using the manufacturing method of the box beam 6, factory production can be adopted to realize batch and standardized production of the box beam 6, thereby improving construction efficiency.

[0078] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A method for manufacturing a box beam, characterized in that: It includes the following steps: S10, manufacturing a plurality of plate structures, wherein the plurality of plate structures include a bottom plate, a top plate and a plurality of web plates; S20, placing the bottom plate and the plurality of webs on the template, so that the bottoms of the plurality of webs are respectively located on both sides of the bottom plate; S30, installing an inner formwork in the U-shaped space surrounded by the bottom plate and the plurality of webs, and pouring and filling concrete inside the bottom plate and the plurality of webs; S40, installing the top plate so that the top plate is disposed on top of a plurality of the web plates; S50, pouring concrete onto the top plate.

2. The method for manufacturing a box beam according to claim 1, characterized in that: The step S20 specifically includes the following steps: S21, hoisting the base plate to the bottom of the template; S22, hoisting a plurality of the webs onto the two side templates of the template respectively.

3. The method for manufacturing a box beam according to claim 2, characterized in that: After step S22 and before step S30, the following steps are also included: S23, closing the two side templates so that a plurality of the webs are lifted upward and the bottoms of a plurality of the webs are attached to the two sides of the bottom plate.

4. The method for manufacturing a box beam according to claim 3, characterized in that: After step S23 and before step S30, the following steps are also included: S24, fixing the bottom plate to the bottoms of the plurality of webs.

5. The method for manufacturing a box beam according to claim 4, characterized in that: In step S24: Node reinforcement is passed through a plurality of intersection nodes between the web plate and the bottom plate.

6. The method for manufacturing a box beam according to claim 1, characterized in that: In the step S30, when pouring concrete, the pouring height of the concrete shall not exceed the installation bottom elevation of the top plate.

7. The method for manufacturing a box beam according to claim 1, characterized in that: The step S40 specifically includes the following steps: The top plate is fixed to the tops of a plurality of the web plates.

8. The method for manufacturing a box beam according to claim 7, characterized in that: In step S40: Node reinforcement is passed through a plurality of intersection nodes between the web plate and the top plate.

9. The method for manufacturing a box beam according to claim 1, characterized in that: A reinforcement structure is provided between the top plate and the web plate.

10. The method for manufacturing a box beam according to claim 1, characterized in that: The plate structure is a plate-type component steel cage.

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