Vertical connection method of H steel

Abstract

The invention belongs to the technical field of fabricated buildings, and particularly relates to a vertical connection method of H steel, which comprises the following steps: S1, assembling different sections of H steel to be connected on site; the method comprises the steps of S1.1, ground first section steel assembling, S1.2, transition section steel assembling, S2, according to the position of a design drawing, S3, transition section steel hoisting and inserting connection, S4, top end steel hoisting and inserting connection, and S5, all connecting positions and welding positions are checked; according to the H-shaped steel butt joint device, the C steel is arranged oppositely, the C steel is embedded in the inwards-concave position of the H steel to form the H-shaped butt joint insertion groove, the butt joint insertion groove is precisely matched with the H steel, vertical butt joint of the H steel is facilitated, the butt joint precision is improved, the butt joint difficulty is reduced, and the situation that dislocation is generated or alignment is difficult during butt joint of the H steel is avoided; and the H steel is clamped and fixed through the C steel, so that the H steel is prevented from deviating in the butt joint process.

Description

Technical Field

[0001] The invention belongs to the technical field of prefabricated buildings, and particularly relates to a vertical connection method of H-steels. Background Art

[0002] Prefabricated buildings, also known as prefabricated buildings, are a type of construction method that prefabricates building components in factories and then transports them to construction sites for assembly. Various components of prefabricated buildings (such as walls, floors, roofs, etc.) are produced in factories, usually using industrialized production processes. It breaks the traditional model of step-by-step construction on site to improve construction efficiency and quality.

[0003] In prefabricated buildings, steel structures are often used as supporting and weighing parts. There are many types of steel structures. Among them, H-steel has excellent weighing performance because of its structure. H-steel steel frame structure is widely used for weighing and support. The existing H-steel connection and docking technology generally uses multiple steel plates to fix the H-steel from multiple sides. This connection method requires a large number of bolts to connect and fix, which is inconvenient to operate. It is also time-consuming and labor-intensive when aligning and correcting the H-steel, and is inconvenient to use.

[0004] In order to solve the above problems, this application proposes a vertical connection method of H-steel. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides a method for vertically connecting H-steel, which has the characteristics of rapid docking, stable and firm connection, and easy operation.

[0006] To achieve the above object, the present invention provides the following technical solution: a method for vertically connecting H-steel, comprising the following steps: S1, different H-steel sections that need to be connected for on-site assembly; S1.1, assembling the first section of steel on the ground, first, embed two inner fixing C steels into the grooves on both sides of the first H steel with their backs facing each other, with one half of the top of the inner fixing C steel exposed, and fasten the inner fixing C steel and the first H steel by bolts, and then clamp two wing-to-wing outer fixing C steels on both sides of the first H steel, with the top of the outer fixing C steel and the top of the inner fixing C steel at the same height, and the inner fixing C steel and the outer fixing C steel form a docking slot; S1.2, assembling the transition section steel, first, embed the two lining C steels into the grooves on both sides of the second H steel with their backs facing each other, the top of the lining C steel extends out by half the length of the internal fixing C steel, and the second H steel and the lining C steel are fastened by bolts; S2, according to the design drawing position, vertically install the first section of ground steel on the ground foundation; S3, hoisting and plugging the transition section steel, first inserting the bottom of the second H steel into the docking slot, fastening the second H steel and the inner fixed C steel from the inner concave side of the second H steel by bolts, fastening the inner fixed C steel, the outer fixed C steel and the second H steel from the two wing sides of the outer fixed C steel by bolts, and then welding the outer fixed C steel to each other. During the plugging process, the transition section steel is always kept in a hoisting state, and the hoisting is released after the bolts are installed; S4, hoisting and plugging the top steel, inserting the third H steel into the slot formed by the lining C steel, fastening the third H steel and the lining C steel from the concave side of the third H steel by bolts, keeping the top steel in a hoisting state during the plugging process, and releasing the hoisting after the bolts are installed; S5, check each connection and welding point.

[0007] As a preferred method for vertically connecting H steels of the present invention, the compressive modulus of the first H steel, the second H steel and the third H steel decreases gradually, the inner fixing C steel and the outer fixing C steel are made of steel with the same strength as the first H steel, and the inner lining C steel is made of steel with the same strength as the second H steel.

[0008] As a preferred method for vertically connecting H-steels of the present invention, the transitional steel sections are at least one group.

[0009] As a preferred method for vertically connecting H-steels of the present invention, the transition section steels are plugged into each other, the second H-steel located above is plugged into the lining C-steels below, and the second H-steel above and the lining C-steel below are fastened by bolts.

[0010] As a preferred method for vertically connecting H-steels of the present invention, a chamfer is provided at a butt joint of the externally fixed C-steels.

[0011] As a preferred method for vertically connecting H-steels of the present invention, the two wings of the inner fixed C-steel and the inner lining C-steel expand outward by 1-3°.

[0012] As a preferred method for vertically connecting H-steels of the present invention, holes are reserved at the bolt fastening locations of the first H-steel, the second H-steel and the third H-steel.

[0013] As a preferred method for vertically connecting H steels of the present invention, the first H steel, the second H steel and the third H steel have the same cross-section and length, and the second H steel and the lining C steel have the same length.

[0014] As a preferred method for vertically connecting H-steels of the present invention, crossbeam connection holes are provided on both sides of the top of the third H-steel.

[0015] As a preferred method for vertically connecting H-steel of the present invention, a conversion member is installed at the connecting hole of the cross beam, and the conversion member is composed of two L-shaped plate-mounted structures with a C-shaped cross-section.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention uses C steels that are arranged back to back, and the C steels are embedded in the concave part of the H steel to form an H-shaped docking slot. The docking slot is precisely adapted to the H steel, which is convenient for vertical docking of the H steel, improves the accuracy of docking, reduces the difficulty of docking, and avoids the situation of misalignment or difficulty in alignment when docking the H steel; 2. The present invention clamps and secures the H steel by C steel to prevent the H steel from shifting during the docking process, and the C steel still clamps the H steel after the docking is completed, thereby improving the stability of the H steel during docking, preventing the H steel from shifting during subsequent construction, and enhancing the lateral force strength of the H steel after vertical docking; 3. Compared with the prior art, the present invention does not require a large number of bolts, and the connection construction is quick and convenient, thereby improving the construction efficiency.

[0017] 4. The H-steel vertical docking of the present invention gradually reduces the strength of the selected H-steel, which reduces material waste and improves economy on the one hand, and reduces the deadweight of the steel frame structure on the other hand, ensuring the bearing pressure while making full use of the strength of the material itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the connection structure of the present invention; Figure 2 It is an exploded schematic diagram of the connection structure of the present invention; Figure 3 This is a cross-sectional view of the first ground steel joint in the present invention; Figure 4 It is a schematic diagram of the connection structure of the transition section steel in the present invention; Figure 5 Schematic diagram of the conversion component structure in the present invention Figure 6 It is a structural schematic diagram of the prior art in the present invention; In the figure: 10, first ground section steel; 11, first H steel; 12, internal fixing C steel; 13, external fixing C steel; 14, chamfer; 20, transition section steel; 21, second H steel; 22, lining C steel; 30, top steel; 31, third H steel; 4, conversion component. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example 1 like Figures 1 to 5 As shown; A vertical connection method of H-steel comprises the following steps: S1, different H-steel sections that need to be connected for on-site assembly; S1.1, assembling the first section of steel 10 on the ground, firstly, embed two inner fixing C steels 12 into the grooves on both sides of the first H steel 11 with their backs facing each other, with half of the top of the inner fixing C steel 12 exposed, and fasten the inner fixing C steel 12 and the first H steel 11 with bolts, and then clamp two outer fixing C steels 13 with wings facing each other on both sides of the first H steel 11, with the top of the outer fixing C steel 13 and the top of the inner fixing C steel 12 at the same height, and the inner fixing C steel 12 and the outer fixing C steel 13 form a docking slot; S1.2, assembling the transition section steel 20, first, embed the two lining C steels 22 into the grooves on both sides of the second H steel 21 with their backs facing each other, and the top of the lining C steel 22 extends half the length of the internal fixing C steel 12, and the second H steel 21 and the lining C steel 22 are fastened by bolts; S2, vertically install the first ground steel section 10 on the ground foundation according to the design drawing position; S3, hoisting and plugging the transition section steel 20, first insert the bottom of the second H steel 21 into the docking slot, fasten the second H steel 21 and the inner fixed C steel 12 from the inner concave side of the second H steel 21 by bolts, fasten the inner fixed C steel 12, the outer fixed C steel 13 and the second H steel 21 from the two wing sides of the outer fixed C steel 13 by bolts, and then weld the outer fixed C steel 13 to each other. During the plugging process, the transition section steel 20 is always in a hoisting state, and the hoisting is released after the bolts are installed; S4, hoisting and plugging the top steel 30, inserting the third H steel 31 into the slot formed by the lining C steel 22, fastening the third H steel 31 and the lining C steel 22 from the concave side of the third H steel 31 by bolts, keeping the top steel in a hoisting state during the plugging process, and releasing the hoisting after the bolts are installed; S5, check each connection and welding point.

[0021] In this implementation scheme: Due to the complexity and diversity of building size design, this implementation scheme takes one case as an example for explanation. In this scheme, the H-steel docking structure is a three-section docking, in which each section of H-steel is 9m long, that is, the first H-steel 11, the second H-steel 21, and the third H-steel 31 are all 9m long, the inner fixed C-steel 12 is 1.8m long, and the outer fixed C-steel 13 is 9.6m long. After the three sections are docked, it is 27m.

[0022] The present invention forms an efficient docking slot through the internal fixed C steel 12 and the external fixed C steel 13. This design greatly facilitates the vertical docking and precise calibration of H steel. When docking, the internal fixed C steel 12 is first fastened with the first H steel 11 by bolts, and then the external fixed C steel 13 is buckled on the outside of the first H steel 11, so as to form a stable docking base, which lays a good foundation for subsequent docking operations. When the first section steel 10 on the ground is docked with the transition section steel 20, the second H steel 21 is hoisted and inserted into this docking slot. Subsequently, the internal fixed C steel 12 is fastened with the second H steel 21 by bolts, and then the internal fixed C steel 12, the external fixed C steel 13 and the second H steel 21 are bolted from the two wing sides of the external fixed C steel 13. Since the H steel is still in a hoisting state when the bolts are installed, this feature can not only realize the rapid docking of the H steel, but also drive the H steel hoisted above to move in a small range during the process of tightening the bolts, thereby improving the accuracy of docking.

[0023] After the bolts are tightened, the hoisting is promptly released and each connection point is checked and tightened again to ensure the firmness and stability of the connection. Then, welding is performed along the butt joint of the external fixed C steel 13 to finally complete the butt joint and fixation between the first ground section steel 10 and the transition section steel 20. When the transition section steel 20 is butt jointed with the top steel 30, the lining C steel 22 is first embedded in both sides of the second H steel 21, the bottom of the lining C steel 22 is fixed to the second H steel 21, and then the third H steel 31 is hoisted and inserted into the inner side of the top of the lining C steel 22. Thereafter, the lining C steel 22 and the third H steel 31 are fastened by bolts.

[0024] After completing these steps, the hoisting is released, and the bolts are checked and tightened again to ensure the firmness and stability of the connection, and the butt joint between the transition section steel 20 and the top steel 30 is successfully completed.

[0025] Finally, the overall connection is fully inspected and tightened to ensure the stability and firmness of the structural connection. The installation of butt-jointed H-steel by this method is simple and quick, which improves the installation efficiency and butt-joint accuracy. The two sides of the H-steel are clamped by the C-steel to improve the stability of the connection between the H-steels.

[0026] More specifically: In an optional embodiment, the compressive modulus of the first H steel 11 , the second H steel 21 and the third H steel 31 decreases gradually, the inner fixed C steel 12 and the outer fixed C steel 13 are made of steel with the same strength as the first H steel 11 , and the lining C steel 22 is made of steel with the same strength as the second H steel 21 .

[0027] In this embodiment: the internal fixed C steel 12, the external fixed C steel 13 and the first H steel 11 used in the present invention are all made of Q690 high-strength steel, which has excellent strength and toughness, can withstand huge loads, and ensure the safety and reliability of the first ground section steel 10 when it withstands all structural pressures above. Since the first ground section steel 10 is located below the entire structure and plays a key supporting role, its compressive performance is specially considered during the design to ensure that it has sufficient strength to resist the gravity from above.

[0028] On the other hand, the inner lining C steel 22 and the second H steel 21 are made of Q345 low alloy steel, which has good plasticity and processing properties. When the pressure is gradually reduced, the consumption of high-strength materials can be effectively reduced. In this way, not only the economy is improved, but also unnecessary material waste is reduced, thereby effectively controlling the construction cost while ensuring the quality of the project. This strategy of stratification and reasonable material selection makes full use of the superior performance of different steels and achieves the best balance between strength and economy.

[0029] In addition, this material combination, through scientific mechanical design, enables the first section of steel 10 on the ground to easily disperse the pressure of the upper structure, reduce stress concentration, and effectively improve the stability and durability of the overall structure. Through fine strength distribution, not only the bearing capacity of the first section of steel 10 on the ground is guaranteed, but also the self-weight of the entire building is reduced.

[0030] Going further: In an optional embodiment, the transition steel sections 20 are at least one group, the transition steel sections 20 are plugged into each other, the second H steel 21 located above is plugged into the lining C steel 22 below, and the second H steel 21 above and the lining C steel 22 below are fastened by bolts.

[0031] In this embodiment: Figure 4 As shown, for higher-rise buildings, the transition steel section 20 of the present invention is butt-jointed in this way, the second H-steel 21 above is hoisted, the bottom end of the second H-steel 21 is inserted between the lining C-steel 22 below, and then fastened by bolts, so as to achieve the butt joint of multiple transition steel sections 20, increase the overall length of the H-steel butt joint, and facilitate the butt joint of the H-steel support structure of the high-rise prefabricated building.

[0032] Going further: In an optional embodiment, a chamfer 14 is provided at the butt joint of the external fixing C steel 13 .

[0033] In this embodiment: through this design, the chamfer 14 facilitates the welding operation of the external fixed C steel 13, improves the welding efficiency, and improves the welding stability.

[0034] Going further: In an optional embodiment, the two wings of the internal fixation C-steel 12 and the lining C-steel 22 expand outward by 1-3°.

[0035] In this embodiment: through this design, when the inner fixing C steel 12 is installed on the first H steel 11, due to the existence of the outward expansion angle, the first H steel 11 and the inner fixing C steel 12 are interference fit, so that the inner fixing C steel 12 can be stuck in the first H steel 11, and there is no need to hold the inner fixing C steel 12 for installation all the time. Similarly, the lining C steel 22 can be in the second H steel 21, and there is no need to hold the lining C steel 22 for a long time for installation, which facilitates the docking operation of the present invention.

[0036] Going further: In an optional embodiment, holes are reserved at the bolt fastening locations of the first H-steel 11 , the second H-steel 21 , and the third H-steel 31 .

[0037] In this embodiment: through this design, the bolt passes through the reserved hole to fix it, and the reserved hole is completed in the factory, so that the hole is in a precise position to avoid deviation, and this method is convenient for batch processing, and components of the same specification can be directly replaced, which is convenient for docking construction work, and the bolts used in the present invention are relative to the prior art, such as Figure 6 As shown, the number of bolts in the present invention is significantly reduced, which facilitates rapid docking construction and improves installation efficiency.

[0038] Going further: In an optional embodiment, the first H steel 11 , the second H steel 21 and the third H steel 31 have the same cross-section and length, and the second H steel 21 and the lining C steel 22 have the same length.

[0039] In this embodiment: through this design, the overall appearance of the H steels after docking is consistent, which is convenient for the conduction of gravity and pressure and more beautiful. When docking, the first H steel 11, the second H steel 21 and the third H steel 31 with the same cross-section can be easily observed to see whether they are docked accurately, and the docking slots formed by the C steels match each H steel, which further facilitates the docking of the H steels.

[0040] Going further: In an optional embodiment, crossbeam connection holes are provided on both sides of the top of the third H-steel 31 .

[0041] In this embodiment: through this design, it is convenient to install the cross beam on the top of the third H steel 31 to form a frame structure, so that the steel frame structure of the building is complete and stable, which is convenient for assembling and installing other components of the prefabricated building.

[0042] Going further: In an optional embodiment, a conversion member 4 is installed at the crossbeam connection hole, and the conversion member 4 is composed of two L-shaped plate-mounted structures with a C-shaped cross-section.

[0043] In this embodiment: the conversion component 4 matches the crossbeam H steel. When the conversion component 4 is connected to the crossbeam H steel, both sides of the crossbeam H steel are clamped. The conversion component 4 has the same operating principle as the internal fixed C steel 12 in this scheme, and its C-shaped cross-section matches the H steel. This method is not only applicable to vertical docking, but also for the lateral docking of H steel. The conversion component 4 strengthens the connection strength of the crossbeam H steel, and also facilitates the rapid docking of the crossbeam H steel with the third H steel 31 in this scheme, thereby improving the efficiency and stability of the docking.

[0044] It should be noted that: in this embodiment, a beam connection hole is opened on the top of the third H steel 31. In actual construction, the beam connection hole can also be opened on the surface of the first H steel 11 and the second H steel 21. The first, second and third H steels in this embodiment are all 9m. Beam connection holes at different positions can be opened according to the design. In combination with the conversion component 4, this solution can be applied to prefabricated buildings with multi-story structures. By setting the position of the beam connection hole, different floor spacings of prefabricated buildings can be designed.

[0045] The working principle and use process of the present invention: Due to the complexity and diversity of building size design, this embodiment is described by taking one case as an example. In this scheme, the H steel docking structure is three-section docking, wherein the length of each H steel section is 9m, that is, the first H steel 11, the second H steel 21, and the third H steel 31 are all 9m, the length of the internal fixed C steel 12 is 1.8m, and the length of the external fixed C steel 13 is 9.6m, and the length after the three sections are docked is 27m.

[0046] The present invention forms an efficient docking slot through the internal fixed C steel 12 and the external fixed C steel 13. This design greatly facilitates the vertical docking and precise calibration of H steel. When docking, the internal fixed C steel 12 is first fastened with the first H steel 11 by bolts, and then the external fixed C steel 13 is buckled on the outside of the first H steel 11, so as to form a stable docking base, which lays a good foundation for subsequent docking operations. When the first section steel 10 on the ground is docked with the transition section steel 20, the second H steel 21 is hoisted and inserted into this docking slot. Subsequently, the internal fixed C steel 12 is fastened with the second H steel 21 by bolts, and then the internal fixed C steel 12, the external fixed C steel 13 and the second H steel 21 are bolted from the two wing sides of the external fixed C steel 13. Since the H steel is still in a hoisting state when the bolts are installed, this feature can not only realize the rapid docking of the H steel, but also drive the H steel hoisted above to move in a small range during the process of tightening the bolts, thereby improving the accuracy of docking.

[0047] After the bolts are tightened, the hoisting is promptly released and each connection point is checked and tightened again to ensure the firmness and stability of the connection. Then, welding is performed along the butt joint of the external fixed C steel 13. The butt joint of the external fixed C steel 13 is provided with chamfers 14 to facilitate welding operations. Finally, the butt joint and fixation between the first ground section steel 10 and the transition section steel 20 are completed. When the transition section steel 20 is butt jointed with the top steel 30, the lining C steel 22 is first embedded in both sides of the second H steel 21, the bottom of the lining C steel 22 is fixed to the second H steel 21, and then the third H steel 31 is hoisted and inserted into the inner side of the top of the lining C steel 22. Thereafter, the lining C steel 22 and the third H steel 31 are fastened by bolts.

[0048] After completing these steps, the hoisting is released, and the bolts are checked and tightened again to ensure the firmness and stability of the connection, and the butt joint between the transition section steel 20 and the top steel 30 is successfully completed.

[0049] Crossbeam connection holes are provided on both sides of the top of the third H-steel 31 for installing crossbeams. The crossbeams are combined with the vertically arranged H-steels to form a frame structure, thereby making the steel frame structure of the building complete and stable, and facilitating the assembly and installation of other components of the prefabricated building.

[0050] Finally, the overall connection is fully inspected and tightened to ensure the stability and firmness of the structural connection. The installation of the butt joint H steel by this method is simple and quick, which improves the installation efficiency and butt joint accuracy. The two sides of the H steel are clamped by the C steel to improve the stability of the connection between the H steels. For taller buildings, more groups of transitional steel sections 20 of the present invention can be set, and the transitional steel sections can be plugged into each other. The second H steel 21 located above is hoisted, and the bottom end of the second H steel 21 is inserted between the lining C steel 22 below, and then fastened by bolts to achieve the butt joint of multiple transitional steel sections 20, increase the overall length of the H steel butt joint, and facilitate the butt joint of the H steel support structure of the high-rise prefabricated building.

[0051] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for vertically connecting H-steel, comprising the following steps: S1, different H-steel sections that need to be connected for on-site assembly; S1.1, assembling the first section of ground steel (10), firstly, embedding two inner fixing C steels (12) into the grooves on both sides of the first H steel (11) with their backs facing each other, with one half of the top of the inner fixing C steel (12) exposed, fastening the inner fixing C steel (12) and the first H steel (11) by bolts, and then engaging two wing-to-wing outer fixing C steels (13) on both sides of the first H steel (11), with the top of the outer fixing C steel (13) and the top of the inner fixing C steel (12) at the same height, and forming a docking slot with the inner fixing C steel (12) and the outer fixing C steel (13); S1.2, assembling the transition section steel (20), first, embedding two inner lining C steels (22) into the grooves on both sides of the second H steel (21) with their backs facing each other, with the top of the inner lining C steel (22) extending half the length of the internal fixing C steel (12), and fastening the second H steel (21) and the inner lining C steel (22) by bolts; S2, according to the design drawing position, vertically install the first ground steel section (10) on the ground foundation; S3, hoisting and plugging the transitional steel section (20), first inserting the bottom of the second H-steel (21) into the docking slot, fastening the second H-steel (21) and the inner fixed C-steel (12) from the inner concave side of the second H-steel (21) by bolts, fastening the inner fixed C-steel (12), the outer fixed C-steel (13) and the second H-steel (21) from the two wing sides of the outer fixed C-steel (13) by bolts, and then welding the outer fixed C-steel (13) to each other. During the plugging process, the transitional steel section (20) is always kept in a hoisted state, and the hoisting is released after the bolts are installed; S4, hoisting and plugging the top steel (30), inserting the third H steel (31) into the slot formed by the lining C steel (22), fastening the third H steel (31) and the lining C steel (22) from the inner concave side of the third H steel (31) by bolts, keeping the top steel in a hoisting state during the plugging process, and releasing the hoisting after the bolts are installed; S5, check each connection and welding point.

2. The method for vertically connecting H-steel according to claim 1, characterized in that: The compressive modulus of the first H-steel (11), the second H-steel (21) and the third H-steel (31) decreases gradually, the internal fixing C-steel (12) and the external fixing C-steel (13) are made of steel with the same strength as the first H-steel (11), and the lining C-steel (22) is made of steel with the same strength as the second H-steel (21).

3. The method for vertically connecting H-steel according to claim 1, characterized in that: The transition steel sections (20) are at least one group.

4. The vertical connection method of H-steel according to claim 3, characterized in that: The transition section steels (20) are plugged into each other, the second H-steel (21) located at the top is plugged into the inner lining C-steel (22) at the bottom, and the second H-steel (21) at the top and the inner lining C-steel (22) at the bottom are fastened by bolts.

5. The method for vertically connecting H-steel according to claim 1, characterized in that: A chamfer (14) is provided at the butt joint of the external fixing C steel (13).

6. The method for vertically connecting H-steel according to claim 1, characterized in that: The two wings of the internal fixation C steel (12) and the lining C steel (22) expand outwards by 1-3 degrees.

7. The method for vertically connecting H-steel according to claim 1, characterized in that: Holes are reserved at the bolt fastening locations of the first H-steel (11), the second H-steel (21) and the third H-steel (31).

8. The method for vertically connecting H-steel according to claim 2, characterized in that: The first H-steel (11), the second H-steel (21) and the third H-steel (31) have the same cross-section and length, and the second H-steel (21) and the lining C-steel (22) have the same length.

9. The method for vertically connecting H-steel according to claim 1, characterized in that: Crossbeam connection holes are provided on both sides of the top end of the third H-steel (31).

10. The method for vertically connecting H-steels according to claim 9, characterized in that: A conversion component (4) is installed at the crossbeam connection hole, and the conversion component (4) is composed of two L-shaped plate-mounted structures with C-shaped cross-sections.

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