Combined H-shaped steel plate wall transfer beam structure and manufacturing method thereof

Abstract

The present invention relates to the field of building construction technology, and is a combined H-shaped steel plate wall conversion beam structure, comprising a first H-shaped steel beam, a second steel beam and a third steel beam with thick flanges and thin webs; the steel beams are arranged parallel to each other and connected by connecting plates, and the left ends of the first, second and third steel beams are welded with head plates, and a number of lap plates for lap beam reinforcement structures are also provided; the bottoms of the lower flanges of the first, second and third steel beams are provided with column foot clamps corresponding to the lower column structure, and the column foot clamps are provided with anchor bars; the upper flange of the second steel beam is provided with a first wall connecting bar, and the lower flange of the second steel beam is provided with a second wall connecting bar; the present invention adopts an H-shaped steel beam with thickened flanges, which has better bearing capacity and ductility than traditional H-shaped steel beams; the upper steel plate wall is connected by the first wall connecting bar, the lower steel plate wall is connected by the second wall connecting bar, and the lower column structure is connected by the column foot clamps, which is easy to install.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and in particular to a combined H-shaped steel plate wall conversion beam structure and a manufacturing method thereof. Background Art

[0002] For example, if the ground floor is used as a shopping mall and the upper floor is a shear wall structure on the bottom frame of a residential building, a conversion component must be installed at the connection between the shear wall and the bottom frame structure. Among them, the conversion beam is one of the commonly used conversion components, including a composite steel conversion beam, whose main body is composed of multiple steel sections, which are connected to form a composite steel conversion beam. During installation, a proper amount of transverse and longitudinal steel bars are provided on the outer periphery of the multiple steel sections, and then concrete is poured. Finally, the concrete, conversion beam, steel bars and stirrups form an organic whole.

[0003] There are many problems in the production of existing composite steel transfer beams. For example, multiple H-shaped beams require multiple supporting brackets and connection points, which requires many assembly times; the construction space between multiple steel sections is small, welding is difficult, and the production quality is difficult to ensure; in structures such as subways and underground stations, the lower side of the transfer beam is generally a steel plate wall + column structure, and the upper side is a steel plate wall. The existing transfer beam structure cannot be well connected with the lower structure and the upper structure. At the same time, the transfer beam in the existing technology is difficult to construct during actual construction due to its large dead weight, and it is not convenient to connect with the upper structure and the lower structure. The main body welding is easy to deform and difficult to correct. It is difficult to effectively control the cracking of concrete after pouring, the seismic resistance is poor, and the quality of the transfer layer cannot be guaranteed. Summary of the Invention

[0004] The present invention aims to solve the above problems, thereby providing a combined H-shaped steel plate wall transfer beam structure and a manufacturing method thereof that is simple to manufacture, convenient to install, and has good seismic performance.

[0005] The present invention solves the above problems by adopting the following technical solutions:

[0006] A combined H-shaped steel plate wall conversion beam structure includes a first steel beam, a second steel beam and a third steel beam, the first steel beam, the second steel beam and the third steel beam are all H-shaped steel beams and the thickness of their upper flanges and lower flanges are greater than the thickness of the web; the first steel beam, the second steel beam and the third steel beam are arranged parallel to each other and connected to each other by connecting plates, and the connecting plates are connected between two adjacent upper flanges and two adjacent lower flanges; the left ends of the first steel beam, the second steel beam and the third steel beam are all welded with head plates, and the first steel beam, the second steel beam and the third steel beam are also provided with a plurality of lap plates for lap beam reinforcement structures; the bottom of the lower flanges of the first steel beam, the second steel beam and the third steel beam are provided with column foot clamps corresponding to the lower column structure, and the column foot clamps are provided with anchor bars, which are anchored to the lower column structure reinforcement through the anchor bars; the upper flange of the second steel beam is provided with a first wall connecting bar corresponding to the upper steel plate wall, and the lower flange of the second steel beam is provided with a second wall connecting bar corresponding to the lower steel plate wall.

[0007] Compared with the prior art, the present invention adopting the above technical solution has the following outstanding features:

[0008] The present invention discloses a combined steel conversion beam for steel plate walls and column structures. The conversion beam is divided into three parts: a first steel beam, a second steel beam and a third steel beam. The three parts can be manufactured separately and then further assembled. When assembling, they only need to be connected using connecting plates, which makes the manufacturing simpler. At the same time, the first steel beam, the second steel beam and the third steel beam all adopt H-shaped steel beams with thickened upper flanges and lower flanges, which have better bearing capacity and ductility than traditional H-shaped steel beams, and further improve the overall seismic resistance of the structure after concrete pouring. The upper steel plate wall is connected by the first wall reinforcement, the lower steel plate wall is connected by the second wall reinforcement, and the lower column structure is connected by the column foot clamp, which is easy to install. At the same time, the structure is equipped with a lap plate to facilitate the insertion and binding of the steel structure. The overall structure of the conversion beam is more consistent with the column structure below the upper steel plate wall, thereby improving construction efficiency and construction quality.

[0009] Preferably, a further technical solution of the present invention is:

[0010] The length of the first steel beam is D1, the length of the second steel beam is D2, the length of the third steel beam is D3, and the length of the connecting plate is L1; the length relationship of the first steel beam, the second steel beam and the third steel beam satisfies: D3>D2>D1; the two combined H-shaped steel plate walls can be connected in a straight line or at 90°, so that the connection between the transfer beams is tighter, which can improve the integrity of the transfer beams after installation.

[0011] The thickness of the upper flange and the lower flange of the first steel beam, the second steel beam and the third steel beam are all W1, the thickness of the web is W2, and the thickness difference W1-W2 is ≥55mm.

[0012] A method for manufacturing a combined H-shaped steel plate wall transfer beam structure comprises the following steps:

[0013] S1: welding: assemble and weld the first, second and third steel beams separately. Use submerged arc automatic welding to weld the upper flanges, lower flanges and webs of the first, second and third steel beams.

[0014] S2: Weld the connection plate, head plate, lap plate, and column foot clamp to the first, second, and third steel beams, respectively. Weld anchor bars to the column foot clamps. Weld the first and second wall tie bars to the upper and lower sides of the second steel beam, respectively.

[0015] S3: Place the first steel beam, the second steel beam, and the third steel beam on the assembly platform in sequence, and connect and fix the first steel beam, the second steel beam, and the third steel beam with a connecting plate;

[0016] The assembly platform includes two parallel longitudinal beams, four cross beams are arranged between the two longitudinal beams, an extension beam is further provided on the leftmost longitudinal beam, the extension beam is arranged perpendicular to the longitudinal beam, and the extension beam and the cross beam are respectively located on the left and right sides; two left limit columns are arranged at intervals on the leftmost longitudinal beam, a right limit column is arranged on the rightmost longitudinal beam, a column foot limit column is provided on the cross beam, and a second steel beam support column and a third steel beam support column are provided on the extension beam, and the left limit column, the right limit column, the column foot limit column, the second steel beam support column and the third steel beam support column are all arranged perpendicular to the plane formed by the longitudinal beams and the cross beams;

[0017] When the first steel beam, the second steel beam and the third steel beam are placed on the assembly platform, the first steel beam, the second steel beam and the third steel beam are arranged longitudinally from bottom to top, the two left limit columns are respectively clamped on the front and rear sides of the first steel beam, the second steel beam and the third steel beam, the right limit column is clamped on the front side of the first steel beam, the second steel beam and the third steel beam, the column foot limit column is clamped on the left side of the column foot clamp, the second steel beam support column is supported on the lower side of the second steel beam, and the third steel beam support column is supported on the lower side of the third steel beam;

[0018] S4: The high-seismic-resistant transfer beam formed by welding the first steel beam, the second steel beam and the third steel beam is taken out from the assembly platform, and each welding point is inspected from front to back. It is put into use after passing the acceptance inspection. This method does not require the setting of supporting brackets and connection points. The first steel beam, the second steel beam and the third steel beam are directly assembled on the assembly platform. The left limit column, the right limit column, the second steel beam support column and the third steel beam support column play a role in limiting and supporting the first steel beam, the second steel beam and the third steel beam, so that the transfer beam can be assembled in one time, thereby improving the assembly efficiency.

[0019] Furthermore, in step S1, the first steel beam, the second steel beam, and the third steel beam all include an H-shape consisting of an upper flange, a lower flange, and a web; the H-shape is welded using carbon dioxide gas shielded welding for tack welding, with a tack weld length of 40-60 mm and a weld spacing of 280-320 mm. The specific steps include:

[0020] S101: Assemble the upper flange, lower flange and web into an H-shape and hoist it to the submerged arc welding station. Before welding, install arc starting plates and arc extinguishing plates with the same thickness and material as the parent material on the H-shape;

[0021] S102: Two people are required to weld. One person operates the submerged arc welding machine for welding, and the other uses a flame preheating gun to heat the upper flange or lower flange at a temperature of 150-200 degrees Celsius. The heating position is the upper side of the upper flange or the lower side of the lower flange corresponding to the welding position. The flame preheating speed is synchronized with the submerged arc welding speed.

[0022] S103: After the upper or lower flange is welded on one side, the back side is cleaned. After the H-shaped integral welding is completed, the arc starting plate and arc extinguishing plate are cut off.

[0023] S104: Wrap the entire H-shape with insulation cotton, slowly cool it to room temperature, and remove the insulation cotton after completion; after the upper and lower flanges are thickened, due to the large thickness difference between the upper and lower flanges and the web, when submerged arc welding is performed, the welding heat is easily lost through the upper or lower flange, and rapid temperature loss will cause large deformation when welding the H-shape. This method avoids rapid temperature loss and welding deformation through external heating, and allows the H-shape to cool down by itself in the insulation cotton, further ensuring the welding quality.

[0024] Furthermore, in step S2, the first steel beam manufacturing process is as follows: first, the H-shape of the first steel beam is completed, and then the head plate, column foot clamp and lap plate are installed on the H-shape in sequence according to the drawing, and anchor bars are welded on the column foot clamp. Before welding and fixing, the dimension lines of the head plate, column foot clamp and lap plate are clearly marked on the H-shape. After the dimension lines are clearly marked, they are assembled and welded. After the head plate, column foot clamp and lap plate are welded and fixed, the connecting plate is welded and installed;

[0025] The second steel beam production process is as follows: First, the H-shape of the second steel beam is completed, and then the head plate, column foot clamp, first and second wall reinforcements are installed on the H-shape in sequence according to the drawings. Before welding and fixing, the dimension lines of the head plate, column foot clamp, first and second wall reinforcements are clearly marked on the H-shape. After the dimension lines are clearly marked, they are assembled and welded. After the head plate, column foot clamp, first and second wall reinforcements are welded and fixed, the connecting plate is welded and installed.

[0026] The production process of the third steel beam is as follows: first, the H-shape of the third steel beam is completed, and then the head plate, column foot clamp and lap plate are installed on the H-shape in sequence according to the drawings. Before welding and fixing, the dimension lines of the head plate, column foot clamp and lap plate are clearly marked on the H-shape. After the dimension lines are clearly drawn, assembly and welding are carried out. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic structural diagram of a combined H-shaped steel plate wall transfer beam according to an embodiment of the present invention;

[0028] Figure 2 This is another structural schematic diagram of a combined H-shaped steel plate wall transfer beam in an embodiment of the present invention;

[0029] Figure 3 Schematic diagram of the structure of the first steel beam in an embodiment of the present invention;

[0030] Figure 4 Schematic diagram of the structure of the second steel beam in an embodiment of the present invention;

[0031] Figure 5 Schematic diagram of the structure of the third steel beam in an embodiment of the present invention;

[0032] Figure 6 This is a schematic structural diagram of an assembly platform in an embodiment of the present invention;

[0033] Figure 7 This is a schematic structural diagram of the combined H-shaped steel plate wall transfer beam when assembled on an assembly platform according to an embodiment of the present invention;

[0034] Figure 8 This is a schematic diagram of the processing in step S102 in an embodiment of the present invention;

[0035] Figure 9 This is a structural diagram of the construction of a combined H-shaped steel plate wall transfer beam according to an embodiment of the present invention;

[0036] Figure 10 for Figure 9 Schematic diagram of the enlarged structure at B in the middle;

[0037] Figure 11 This is another structural schematic diagram of the transfer beam during construction in an embodiment of the present invention;

[0038] Figure 12 This is another structural schematic diagram of the construction of the transfer beam in an embodiment of the present invention.

[0039] In the figure: 1. First steel beam; 101. Upper flange; 102. Lower flange; 103. Web; 2. Second steel beam; 201. First wall reinforcement; 2011. Small H-shaped steel column; 2012. First wall panel; 2013. First reinforcement; 2014. First through-rib plate; 202. Second wall reinforcement; 2022. Second wall panel; 2023. Second reinforcement; 2024. Second through-rib plate; 3. Third steel beam; 4. Connecting plate; 5. Column foot clamp; 501. Right column foot clamp; 502. Left column foot clamp. 6. Anchor reinforcement; 7. Head plate; 8. Ear plate; 901. Small lap plate; 902. Longitudinal lap plate; 903. External lap plate; 1001. First rib; 1002. Second rib; 1003. Third rib; 11. Longitudinal beam; 12. Horizontal beam; 13. Extension beam; 14. Left limit column; 15. Right limit column; 16. Column foot limit column; 17. Second steel beam support column; 18. Third steel beam support column; 19. Longitudinal rib plate; 20. Upper steel plate wall; 21. Lower column structure; 22. Lower steel plate wall. Implementation Method

[0040] The present invention will be further described below with reference to the embodiments, the purpose of which is only to provide a better understanding of the content of the present invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0041] like Figures 1 to 7As shown, a combined H-shaped steel plate wall conversion beam structure includes a first steel beam 1, a second steel beam 2 and a third steel beam 3. The first steel beam 1, the second steel beam 2 and the third steel beam 3 are all H-shaped steel beams and the thickness of their upper flanges 101 and lower flanges 102 are greater than the thickness of the web 103; the first steel beam 1, the second steel beam 2 and the third steel beam 3 are arranged parallel to each other and connected to each other through a connecting plate 4, the connecting plate 4 is connected between two adjacent upper flanges 101 and two adjacent lower flanges 102, and the thickness of the connecting plate 4 is equal to the thickness of the upper flange 101 or the lower flange 102; the left ends of the first steel beam 1, the second steel beam 2 and the third steel beam 3 are welded with a head plate 7; the first steel beam 1, the second steel beam 2 and the third steel beam 3 are also provided with a plurality of lap plates for lap beam reinforcement structures; the lap plates include small lap plates 901 welded and fixed on the web 103, and longitudinally welded The longitudinal lap plate 902 is fixed on the web 103 and connects the upper flange 101 and the lower flange 102, and the outer lap plate is welded and fixed on the head plate 7. The welding positions of the small lap plate 901, the longitudinal lap plate 902 and the outer lap plate are arranged according to the preset steel bar structure position of the conversion beam; the bottom of the lower flange 102 of the first steel beam 1, the second steel beam 2 and the third steel beam 3 is provided with a column foot clamp 5 corresponding to the lower column structure 21, and the column foot clamp 5 is provided with an ear plate 8 for connecting the lower column structure 21, and the column foot clamp 5 is also connected to the anchor bar 6, and the column foot clamp 5 is anchored to the steel bar of the lower column structure 21 through the ear plate 8 and the anchor bar 6; the upper flange 101 of the second steel beam 2 is provided with a first wall connecting bar 201 corresponding to the upper steel plate wall 20, and the lower flange 102 of the second steel beam 2 is provided with a second wall connecting bar 202 corresponding to the lower steel plate wall 22.

[0042] In this embodiment, a structure is provided to facilitate the connection between transfer beams. Specifically, the length of the first steel beam 1 is D1, the length of the second steel beam 2 is D2, the length of the third steel beam 3 is D3, and the length of the connecting plate 4 is L1. The length relationship between the first steel beam 1, the second steel beam 2 and the third steel beam 3 satisfies: D3>D2>D1. The combined H-shaped steel plate wall transfer beam structure and the combined H-shaped steel plate wall transfer beam structure are overlapped with each other, the first steel beam 1 of the left transfer beam is overlapped with the third steel beam 3 of the right transfer beam, the second steel beam 2 of the left transfer beam is overlapped with the second steel beam 2 of the right transfer beam, and the third steel beam 3 of the left transfer beam is overlapped with the first steel beam 1 of the right transfer beam. Similarly, the two transfer beams can also be connected to each other at right angles.

[0043] In this example, to further enhance the bearing capacity of the transfer beam, the thickness of the upper flange 101 and the lower flange 102 of the first steel beam 1, the second steel beam 2, and the third steel beam 3 are all W1, the thickness of the web 103 is W2, and the thickness difference W1-W2 is ≥55mm. The H-type structure with thick flanges and thin webs 103 has better bearing capacity and ductility. Specifically, W1=80mm and W2=16mm.

[0044] like Figures 9 to 12 When in use, the first wall reinforcement 201 is connected to the upper steel plate wall 20, the second wall reinforcement 202 is connected to the lower steel plate wall 22, and the column foot clamp 5 is connected to the lower column structure 21.

[0045] This embodiment discloses a method for manufacturing a combined H-shaped steel plate wall transfer beam structure, comprising the following steps:

[0046] S0: Use Tekla software to split the H-shaped steel plate wall conversion beam, split it into individual parts and number each part, use typesetting software to layout the processed parts, mark the size and direction of the groove on the layout drawing for parts with grooves, then output the processed layout drawing to the program, use a semi-automatic CNC flame cutting machine to cut, mark the part number and groove size on the cut parts, use a flame cutting trolley to perform secondary groove cutting, and the processed parts are transported to the production site for assembly.

[0047] The parts include: the upper flange 101, the lower flange 102, and the web 103 of the first steel beam 1, the second steel beam 2, and the third steel beam 3; the ear plate 8; several small H-shaped steel columns 2011, the first wall panel 2012, the first reinforcement 2013, the first through-rib plate 2014, the second wall reinforcement 202, the second wall panel 2022, the second reinforcement 2023, the second through-rib plate 2024, the connecting plate 4, the steel plate for making the column foot clamp 5, the anchor bar 6, the head plate 7, the small lap plate 901, the longitudinal lap plate 902, the outer lap plate 903, the first rib 1001, the second rib 1002, the third rib 1003, the longitudinal beam 11, the transverse beam 12, the extension beam 13, the left limit column 14, the right limit column 15, the column foot limit column 16, the second steel beam support column 17, the third steel beam 3 support column 18, the longitudinal rib plate 19, etc. Among them, the ear plate 8 is used for lifting and connection; the small lap plate 901, the longitudinal lap plate 902, and the outer lap plate 903 are used for passing steel bars, and there are holes for passing steel bars on them; the first rib 1001, the second rib 1002, and the third rib 1003 are used for further strengthening the H-shaped structure.

[0048] S1: welding of the workpiece. The first steel beam 1, the second steel beam 2 and the third steel beam 3 all include an H-shape consisting of an upper flange 101, a lower flange 102 and a web 103. The first steel beam 1, the second steel beam 2 and the third steel beam 3 are assembled and welded separately. Furthermore, the H-shape of the first steel beam 1, the second steel beam 2 and the third steel beam 3 is mainly assembled on an H-shape assembly machine. The flanges (upper flange 101 and lower flange 102) are 80 mm thick and the web 103 is 16 mm thick. After the overall assembly is completed, carbon dioxide gas shielded welding is used for tack welding. The tack welding length is 40-60 mm and the welding spacing is 280-320 mm to ensure the rigidity requirements during overall welding. In this embodiment, the tack welding length is 50 mm and the welding spacing is 300 mm. The welding steps include:

[0049] S101: Lift the H-shaped plate to the submerged arc welding station. Before welding, install arc starting plates and arc extinguishing plates with the same thickness and material as the base material on the H-shaped plate.

[0050] S102: Figure 8 As shown, two people operate during welding, one person operates the submerged arc welding machine for welding, and the other uses a flame preheating gun to heat the upper flange 101 or the lower flange 102, the heating temperature is 150-200 degrees Celsius, and the heating position is the corresponding position of the web 103 ( Figure 8 At point A in the middle), to prevent welding deformation caused by excessive thickness of the upper flange 101 and the lower flange 102, and uneven heat loss of the wing plate and the web 103, the flame preheating speed is synchronized with the submerged arc welding speed;

[0051] S103: After the upper flange 101 or the lower flange 102 is welded on one side, the back side is cleaned. After the H-shaped integral welding is completed, the arc starting plate and the arc extinguishing plate are cut off.

[0052] S104: Wrap the entire H-shaped body with thermal insulation cotton, slowly cool it to room temperature, and remove the thermal insulation cotton after completion.

[0053] S2: Weld the head plate 7, the lap plate, and the column foot clamp 5 to the first steel beam 1, the second steel beam 2, and the third steel beam 3, respectively. Weld the anchor bar 6 to the column foot clamp 5. Weld the first wall reinforcement 201 and the second wall reinforcement 202 to the upper and lower sides of the second steel beam 2, respectively.

[0054] The manufacturing process of the first steel beam 1 is as follows: S2011: manufacturing the right column foot clamp 501, which includes a column foot body, which is made of H-shaped steel, with several ear plates 8 welded to the column foot body, and anchor bars 6 welded to the lower part. During assembly, angle steel bracing is added to the column foot body to prevent deformation after welding; manufacturing the left column foot clamp 502, which is only made into a T-shape on the short side (the T-shaped end is used to connect to the head plate 7), and the T-shape on the short side is composed of a short web plate 103 and a short cover plate;

[0055] S2012: Parts assembly. Parts assembly is carried out on a prefabricated flat tire. Before assembly, the dimension lines of the parts to be installed on the front and side of the first steel beam 1H-type need to be clearly marked on the H-type. Then start to install the front parts, and install the head plate 7, the outer lap plate, the first rib 1001, the second rib 1002, the third rib 1003, and the small lap plate 901 in sequence. After assembly is completed, stand up the H-type, and then assemble the left column foot clamp 502, the right column foot clamp 501, and the longitudinal lap plate 902 in sequence. After assembly is completed, all welds are welded. After welding is completed, turn it over to the back and assemble and weld the small lap plate 901, the first rib 1001, the second rib 1002, the third rib 1003 and the connecting plate 4 on the back;

[0056] S2013: After all parts are welded, perform appearance and size repairs.

[0057] The manufacturing process of the second steel beam 2 is as follows: S2021: First, the first wall reinforcement 201 is made. The first wall reinforcement 201 includes two small H-shaped steel columns 2011, a first wall panel 2012, a first reinforcement rib 2013, an ear plate 8, and a first through-rib plate 2014; then, the right column foot clamp 501 (H-shaped) and the left column foot clamp 502 (T-shaped, the same as the left column foot clamp 5 of the first steel beam 1) are made for the second steel beam 2; then, the second wall reinforcement 202 is connected between the left column foot clamp 502 and the right column foot clamp 501. The second wall reinforcement 202 includes a second wall panel 2022, a second reinforcement rib 2023, and a second through-rib plate 2024; finally, the ear plate 8 and the anchor bar 6 are welded to the left column foot clamp 502 and the right column foot clamp 501;

[0058] S2022: Parts assembly. Parts assembly is performed on a prefabricated flat tire. Before assembly, the dimension lines of the parts to be installed on the front and side of the second steel beam 2H-shaped structure must be clearly marked on the H-shaped structure. Then, the front parts are assembled. The head plate 7 and the longitudinal rib plate 19 are welded in sequence. After welding, the structure is flipped over to the back side for assembly and welding of the rear longitudinal rib plate 19 and the connecting plate 4. After assembly, the H-shaped structure is erected, and the first wall reinforcement 201, the left column foot clamp 502, the second wall reinforcement 202, and the right column foot clamp 501 are assembled in sequence.

[0059] S2023: After all parts are welded, perform appearance and size repairs.

[0060] The third steel beam 3 lacks the first rib 1001 , the second rib 1002 , the outer lap plate and the connecting plate 4 compared to the first steel beam 1 . The assembly process of the third steel beam 3 is similar to that of the first steel beam 1 .

[0061] S3: Place the first steel beam 1, the second steel beam 2 and the third steel beam 3 on the assembly platform in sequence. The construction workers enter between the combined H-shaped steel plate wall transfer beams and weld the other end of the connecting plate 4 from front to back to firmly connect and fix the first steel beam 1, the second steel beam 2 and the third steel beam 3;

[0062] The assembly platform includes two parallel longitudinal beams 11, four cross beams 12 are arranged between the two longitudinal beams 11, and an extension beam 13 is further provided on the leftmost longitudinal beam 11. The extension beam 13 is arranged perpendicular to the longitudinal beam 11, and the extension beam 13 and the cross beam 12 are respectively located on the left and right sides; two left limit columns 14 are arranged at intervals on the leftmost longitudinal beam 11, a right limit column 15 is provided on the rightmost longitudinal beam 11, a column foot limit column 16 is provided on the cross beam 12, and a second steel beam support column 17 and a third steel beam 3 support column 18 are provided on the extension beam 13. The left limit column 14, the right limit column 15, the column foot limit column 16, the second steel beam support column 17 and the third steel beam 3 support column 18 are all arranged perpendicular to the plane formed by the longitudinal beams 11 and the cross beams 12;

[0063] like Figure 7 When the first steel beam 1, the second steel beam 2 and the third steel beam 3 are placed on the assembly platform, the first steel beam 1, the second steel beam 2 and the third steel beam 3 are arranged longitudinally from bottom to top, the two left limit columns 14 are respectively clamped on the front and rear sides of the first steel beam 1, the second steel beam 2 and the third steel beam 3, the right limit column 15 is clamped on the front side of the first steel beam 1, the second steel beam 2 and the third steel beam 3, the column foot limit column 16 is clamped on the left side of the column foot clamp 5, the second steel beam support column 17 is supported on the lower side of the second steel beam 2, and the third steel beam 3 support column 18 is supported on the lower side of the third steel beam 3;

[0064] S4: The high-seismic-resistant transfer beam formed by welding the first steel beam 1, the second steel beam 2 and the third steel beam 3 is taken out from the assembly platform, and each welding point is inspected from front to back. It is put into use after passing the acceptance inspection.

[0065] After welding using this method, the entire combined H-shaped steel plate wall conversion beam is completed. Since it has been repaired in step S2, the components do not need to be repaired again, and the finished product can be obtained after a simple overall size check. The conversion beam structure of the present invention is divided into three major parts. The first steel beam 1, the second steel beam 2, and the third steel beam 3 can be constructed at the same time, which improves the production efficiency. After the individual steel beams are completed, they are assembled, and the production accuracy of each part can be guaranteed, which solves the problem of narrow construction space and difficult welding between multiple H-shaped beams. By preheating and submerged arc welding, the problems of large thickness differences, large welding deformation, and difficulty in later correction are solved, so that the quality of the overall conversion beam is guaranteed and the production efficiency is also improved.

[0066] The above description is only a preferred embodiment of the present invention and does not limit the scope of the present invention. Any equivalent changes made using the contents of the present invention specification and its drawings are included in the scope of the present invention.

Claims

1. A method for manufacturing a combined H-shaped steel plate wall transfer beam structure, characterized in that: The invention relates to a combined H-shaped steel plate wall conversion beam structure, which specifically includes a first steel beam, a second steel beam and a third steel beam. The first steel beam, the second steel beam and the third steel beam are all H-shaped steel beams and the thickness of the upper flange and the lower flange are greater than the thickness of the web. The first steel beam, the second steel beam and the third steel beam are arranged parallel to each other and connected to each other by a connecting plate. The connecting plate is connected between two adjacent upper flanges and two adjacent lower flanges. The left ends of the first steel beam, the second steel beam and the third steel beam are connected to each other. They are all welded with head plates, and the first steel beam, the second steel beam and the third steel beam are also provided with a number of lap plates for lap-joining the beam reinforcement structure; the bottom of the lower flange of the first steel beam, the second steel beam and the third steel beam is provided with a column foot clamp corresponding to the lower column structure, and the column foot clamp is provided with an anchor bar, and the column foot clamp is anchored to the reinforcement of the lower column structure through the anchor bar; the upper flange of the second steel beam is provided with a first wall reinforcement corresponding to the upper steel plate wall, and the lower flange of the second steel beam is provided with a second wall reinforcement corresponding to the lower steel plate wall; The preparation method comprises the following steps: S1: welding: assemble and weld the first, second and third steel beams separately. Use submerged arc automatic welding to weld the upper flanges, lower flanges and webs of the first, second and third steel beams. S2: Weld the head plate, lap plate, and column foot clamps to the first, second, and third steel beams, respectively. Weld anchor bars to the column foot clamps. Weld the first and second wall tie bars to the upper and lower sides of the second steel beam, respectively. S3: Place the first steel beam, the second steel beam, and the third steel beam on the assembly platform in sequence, and connect and fix the first steel beam, the second steel beam, and the third steel beam with a connecting plate; The assembly platform includes two parallel longitudinal beams, four cross beams are arranged between the two longitudinal beams, an extension beam is further provided on the leftmost longitudinal beam, the extension beam is arranged perpendicular to the longitudinal beam, and the extension beam and the cross beam are respectively located on the left and right sides; two left limit columns are arranged at intervals on the leftmost longitudinal beam, a right limit column is arranged on the rightmost longitudinal beam, a column foot limit column is provided on the cross beam, and a second steel beam support column and a third steel beam support column are provided on the extension beam, and the left limit column, the right limit column, the column foot limit column, the second steel beam support column and the third steel beam support column are all arranged perpendicular to the plane formed by the longitudinal beams and the cross beams; When the first steel beam, the second steel beam and the third steel beam are placed on the assembly platform, the first steel beam, the second steel beam and the third steel beam are arranged longitudinally from bottom to top, the two left limit columns are respectively clamped on the front and rear sides of the first steel beam, the second steel beam and the third steel beam, the right limit column is clamped on the front side of the first steel beam, the second steel beam and the third steel beam, the column foot limit column is clamped on the left side of the column foot clamp, the second steel beam support column is supported on the lower side of the second steel beam, and the third steel beam support column is supported on the lower side of the third steel beam; S4: The high-seismic-resistant transfer beam formed by welding the first steel beam, the second steel beam and the third steel beam is taken out from the assembly platform, and each welding point is inspected from front to back. It is put into use after passing the acceptance inspection.

2. The method for manufacturing a combined H-shaped steel plate wall transfer beam structure according to claim 1, characterized in that: The length of the first steel beam is D1, the length of the second steel beam is D2, the length of the third steel beam is D3, and the length of the connecting plate is L1; the length relationship of the first steel beam, the second steel beam and the third steel beam satisfies: D3>D2>D1.

3. The method for manufacturing a combined H-shaped steel plate wall transfer beam structure according to claim 1, characterized in that: The thickness of the upper flange and the lower flange of the first steel beam, the second steel beam and the third steel beam are all W1, the thickness of the web is W2, and the thickness difference W1-W2 is ≥55mm.

4. The method for manufacturing a combined H-shaped steel plate wall transfer beam structure according to claim 1, characterized in that: In step S1, the first steel beam, the second steel beam, and the third steel beam all include an H-shape consisting of an upper flange, a lower flange, and a web. When welding the H-shape, carbon dioxide gas shielded welding is used for tack welding. The tack welding length is 40-60 mm, and the welding spacing is 280-320 mm. The specific steps include: S101: Assemble the upper flange, lower flange and web into an H-shape and hoist it to the submerged arc welding station. Before welding, install arc starting plates and arc extinguishing plates with the same thickness and material as the parent material on the H-shape; S102: Two people are required to weld. One person operates the submerged arc welding machine for welding, and the other uses a flame preheating gun to heat the upper flange or lower flange at a temperature of 150-200 degrees Celsius. The heating position is the upper side of the upper flange or the lower side of the lower flange corresponding to the welding position. The flame preheating speed is synchronized with the submerged arc welding speed. S103: After the upper or lower flange is welded on one side, the back side is cleaned. After the H-shaped integral welding is completed, the arc starting plate and arc extinguishing plate are cut off. S104: Wrap the entire H-shaped body with thermal insulation cotton, slowly cool it to room temperature, and remove the thermal insulation cotton after completion.

5. The method for manufacturing a combined H-shaped steel plate wall transfer beam structure according to claim 4, characterized in that: In step S2, the first steel beam manufacturing process is as follows: first, the H-shape of the first steel beam is completed, and then the head plate, column foot clamp and lap plate are installed on the H-shape in sequence according to the drawing, and anchor bars are welded to the column foot clamp. Before welding and fixing, the dimension lines of the head plate, column foot clamp and lap plate are clearly marked on the H-shape. After the dimension lines are clearly marked, they are assembled and welded. After the head plate, column foot clamp and lap plate are welded and fixed, the connecting plate is welded and installed; The second steel beam production process is as follows: First, the H-shape of the second steel beam is completed, and then the head plate, column foot clamp, first and second wall reinforcements are installed on the H-shape in sequence according to the drawings. Before welding and fixing, the dimension lines of the head plate, column foot clamp, first and second wall reinforcements are clearly marked on the H-shape. After the dimension lines are clearly marked, they are assembled and welded. After the head plate, column foot clamp, first and second wall reinforcements are welded and fixed, the connecting plate is welded and installed. The production process of the third steel beam is as follows: first, the H-shape of the third steel beam is completed, and then the head plate, column foot clamp and lap plate are installed on the H-shape in sequence according to the drawings. Before welding and fixing, the dimension lines of the head plate, column foot clamp and lap plate are clearly marked on the H-shape. After the dimension lines are clearly drawn, assembly and welding are carried out.

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