A connection node of modular steel structure and modular steel structure thereof

Abstract

The present invention provides a connection node of a modular steel structure, comprising at least two H-shaped steels, a plurality of connection plates and a plurality of bolts; the H-shaped steel comprises a first H-shaped steel and a second H-shaped steel; a plurality of first bolt holes and a third bolt hole are provided on the first vertical plate and the third vertical plate; a plurality of second bolt holes and a fourth bolt hole are provided on the second vertical plate and the fourth vertical plate; a first connection plate bolt hole is provided on the first connection plate, and a second connection plate bolt hole is provided on the second connection plate, and the first connection plate is fixedly connected with the first H-shaped steel and the second H-shaped steel by bolts. The beneficial effects of the present invention are: the connection plate and the H-shaped steel are connected by bolts, and a plurality of hand holes are provided on the horizontal plate of the H-shaped steel, and the hand holes facilitate the installation and connection of the bolts, greatly improving the assembly efficiency, high splicing rate, strong integrity, simple structure and convenient construction.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure buildings, and in particular to a connection node of modular steel structural parts and a modular steel structure thereof. Background Art

[0002] In the development of offshore oil, the steel support of the operating platform is used as a platform for oil development, and its design is becoming more and more complex and the requirements are becoming higher and higher. At present, the steel support is mainly welded by multiple criss-cross steel sections. In the process of making the steel support, it is necessary to weld each connection between adjacent steel sections inside and outside to ensure the firmness of the structure of the steel support. However, there are the following complexities in the processing of steel supports with this structure: First, the steel support is interconnected with other professional equipment and pipelines, and the installation process is complicated. As the main load-bearing component of the platform, the steel support needs to fully ensure the welding quality and production quality; second, the steel support component structure is complex, the splicing process is complicated, the engineering volume is large, the construction period is long, and a large amount of welding is required; third, due to the limitations of the construction site conditions, the on-site installation nodes of this type of steel support are all designed to be connected with high-strength bolts, so the outer dimensions of the steel components and the accuracy of the installation holes need to be guaranteed. Summary of the invention

[0003] The purpose of the present invention is to provide a connection node for modular steel structure parts, so as to solve the problems of complexity of steel structure nodes, complicated working procedures, long construction period, etc.

[0004] A connection node of a modular steel structure, comprising at least two H-shaped steels, a plurality of connection plates and a plurality of high-strength bolts; the H-shaped steel comprises a first H-shaped steel and a second H-shaped steel; the first H-shaped steel comprises a first vertical plate, a second vertical plate and a first horizontal plate connecting the first vertical plate and the second vertical plate; the second H-shaped steel comprises a third vertical plate, a fourth vertical plate and a second horizontal plate connecting the third vertical plate and the fourth vertical plate; the outer side surfaces of the first vertical plate and the third vertical plate are flush with each other, and the outer side surfaces of the first vertical plate and the third vertical plate are provided with a plurality of first high-strength bolt holes and a third high-strength bolt holes from top to bottom; the outer side surfaces of the second vertical plate and the fourth vertical plate are flush with each other, and the outer side surfaces of the second vertical plate and the fourth vertical plate are provided with a plurality of second high-strength bolt holes and a fourth high-strength bolt holes from top to bottom; the connection plate comprises a first connection plate and a second connection plate; the first connection plate The connecting plate is provided with a plurality of first connecting plate high-strength bolt holes corresponding to the positions of the first high-strength bolt hole and the third high-strength bolt hole, and the second connecting plate is provided with a plurality of second connecting plate high-strength bolt holes corresponding to the positions of the second high-strength bolt hole and the fourth high-strength bolt hole. The high-strength bolts pass through the first high-strength bolt holes and the first connecting plate high-strength bolt holes to fix the first H-shaped steel to the first connecting plate; the high-strength bolts pass through the third high-strength bolt holes and the first connecting plate high-strength bolt holes to fix the second H-shaped steel to the first connecting plate; the high-strength bolts pass through the second high-strength bolt holes and the second connecting plate high-strength bolt holes to fix the first H-shaped steel to the second connecting plate; the high-strength bolts pass through the fourth high-strength bolt holes and the second connecting plate high-strength bolt holes to fix the second H-shaped steel to the second connecting plate.

[0005] Furthermore, it also includes a third H-shaped steel; the third H-shaped steel includes a fifth vertical plate, a sixth vertical plate and a third horizontal plate connecting the fifth vertical plate and the sixth vertical plate; the length of the fifth vertical plate is equal to the sum of the lengths of the second vertical plate and the fourth vertical plate; the fifth vertical plate is provided with a plurality of fifth high-strength bolt holes and sixth high-strength bolt holes corresponding to the positions of the second high-strength bolt holes and the fourth high-strength bolt holes; the high-strength bolts sequentially pass through the fifth high-strength bolt holes, the second connecting plate high-strength bolt holes, and the second high-strength bolt holes to fix the third H-shaped steel plate, the second connecting plate and the first H-shaped steel plate; the high-strength bolts sequentially pass through the sixth high-strength bolt holes, the second connecting plate high-strength bolt holes, and the fourth high-strength bolt holes to fix the third H-shaped steel plate, the second connecting plate and the second H-shaped steel plate. The third horizontal plate is provided with a plurality of third hand holes.

[0006] Furthermore, it also includes a third connecting plate, a fourth H-shaped steel and a fifth H-shaped steel; the fourth H-shaped steel includes a seventh vertical plate, an eighth vertical plate and a fourth horizontal plate connecting the seventh vertical plate and the eighth vertical plate; the seventh vertical plate is provided with a plurality of seventh high-strength bolt holes corresponding to the positions of the second high-strength bolt holes; the end of the seventh vertical plate is flush with the end of the second vertical plate; the high-strength bolts pass through the seventh high-strength bolt holes, the second connecting plate high-strength bolt holes and the second high-strength bolt holes to connect the fourth H-shaped steel to the first H-shaped steel; the eighth vertical plate is provided with a plurality of eighth high-strength bolt holes from top to bottom; the fourth horizontal plate is provided with a plurality of fourth hand holes; the fifth H-shaped steel includes a ninth vertical plate and a tenth vertical plate and a fourth horizontal plate connecting the ninth vertical plate and The fifth horizontal plate is connected to the tenth vertical plate; the ninth vertical plate is provided with a plurality of ninth high-strength bolt holes corresponding to the positions of the fourth high-strength bolt holes; the end of the ninth vertical plate is flush with the end of the fourth vertical plate; the high-strength bolts sequentially pass through the ninth high-strength bolt hole, the second connecting plate high-strength bolt hole and the fourth high-strength bolt hole to connect the fifth H-shaped steel with the second H-shaped steel; the tenth vertical plate is provided with a plurality of tenth high-strength bolt holes from top to bottom; the fifth horizontal plate is provided with a plurality of fifth hand holes; the third connecting plate is provided with a plurality of third connecting plate high-strength bolt holes corresponding to the positions of the eighth high-strength bolt holes and the tenth high-strength bolt holes; the third connecting plate, the fourth H-shaped steel and the fifth H-shaped steel are fixedly connected by high-strength bolts.

[0007] Furthermore, the first horizontal plate is provided with a plurality of first hand holes, and the second horizontal plate is provided with a plurality of second hand holes; a reinforcing plate is also included, and the reinforcing plate is installed on the first hand hole, the second hand hole, the fourth hand hole and the fifth hand hole; the reinforcing plate is a circular reinforcing plate, and a through hole is provided in the middle of the reinforcing plate. The through hole allows a hand to pass through to lock and fix the high-strength bolt.

[0008] Furthermore, a boss is provided on the reinforcement plate, and the number of reinforcement plates installed on the first hand hole, the second hand hole, the fourth hand hole and the fifth hand hole is two; the two reinforcement plates are respectively installed on both sides of the first hand hole, the second hand hole, the fourth hand hole and the fifth hand hole; the boss is located in the first hand hole, the second hand hole, the fourth hand hole and the fifth hand hole, and the reinforcement plate is fixed to the first hand hole, the second hand hole, the fourth hand hole and the fifth hand hole by welding.

[0009] Furthermore, in a modular steel structure using connection nodes, two adjacent connection nodes are connected by a connection column; the connection column and the connection node are fixedly connected by an L-shaped connection plate.

[0010] After adopting the above technical scheme, the beneficial effects of the present invention are: the connecting plate and the H-shaped steel are connected by high-strength bolts, and a plurality of hand holes are arranged on the horizontal plate of the H-shaped steel, and the hand holes are convenient for the installation and connection of high-strength bolts, which greatly improves the assembly efficiency, has a high splicing rate, and has strong integrity, a simple structure, and is convenient for construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the present invention.

[0012] Figure 2 It is a schematic diagram of the overall structure of the second embodiment of the present invention.

[0013] Figure 3 It is a schematic diagram of the overall structure of the third embodiment of the present invention.

[0014] Figure 4 This is a schematic diagram of the decomposition of the third embodiment.

[0015] Figure 5 The overall structural diagram of modular steel structure.

[0016] Figure 6 Schematic diagram of the structure of the reinforcement plate.

[0017] 1. First H-shaped steel; 11. First vertical plate; 111. First high-strength bolt hole; 12. Second vertical plate; 121. Second high-strength bolt hole; 13. First horizontal plate; 131. First hand hole; 2. Second H-shaped steel; 21. Third vertical plate; 211. Third high-strength bolt hole; 22. Fourth vertical plate; 221. Fourth high-strength bolt hole; 23. Second horizontal plate; 231. Second hand hole; 3. Third H-shaped steel; 31. Fifth vertical plate; 32. Sixth vertical plate; 33. Third horizontal plate; 331. Third hand hole, 4. Fourth H-shaped steel; 41. Seventh vertical plate; 411. Seventh high-strength bolt hole ; 42. The eighth vertical plate; 421. The eighth high-strength bolt hole; 43. The fourth horizontal plate; 431. The fourth hand hole; 5. The fifth H-shaped steel; 51. The ninth vertical plate; 511. The ninth high-strength bolt hole; 52. The tenth vertical plate; 521. The tenth high-strength bolt hole; 53. The fifth horizontal plate; 531. The fifth hand hole; 6. The first connecting plate; 601. The first connecting plate high-strength bolt hole; 61. The second connecting plate; 611. The second connecting plate high-strength bolt hole; 62. The third connecting plate; 621. The third connecting plate high-strength bolt hole; 7. The reinforcement plate; 71. The boss; 72. The through hole; 8. The connecting column. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0019] Embodiment 1:

[0020] like Figure 1 As shown, this embodiment discloses a connection node of a modular steel structure, including two H-shaped steels, a plurality of connection plates and a plurality of high-strength bolts. The number of H-shaped steels is two; the H-shaped steels include a first H-shaped steel 1 and a second H-shaped steel 2; the first H-shaped steel 1 includes a first vertical plate 11, a second vertical plate 12 and a first horizontal plate 13 connecting the first vertical plate 11 and the second vertical plate 12; the second H-shaped steel 2 includes a third vertical plate 21, a fourth vertical plate 22 and a second horizontal plate 23 connecting the third vertical plate 21 and the fourth vertical plate 22.

[0021] The outer side surfaces of the first vertical plate 11 and the third vertical plate 21 are spliced ​​together, the outer side surfaces of the first vertical plate 11 and the third vertical plate 21 are flush, and the outer side surfaces of the first vertical plate 11 and the third vertical plate 21 are provided with a plurality of first high-strength bolt holes 111 and third high-strength bolt holes 211 from top to bottom. The outer side surfaces of the second vertical plate 12 and the fourth vertical plate 22 are spliced ​​together, the outer side surfaces of the second vertical plate 12 and the fourth vertical plate 22 are flush, and the outer side surfaces of the second vertical plate 12 and the fourth vertical plate 22 are provided with a plurality of second high-strength bolt holes 121 and fourth high-strength bolt holes 221 from top to bottom.

[0022] The connecting plate includes a first connecting plate 6 and a second connecting plate 61. The first connecting plate 6 is provided with a plurality of first connecting plate high-strength bolt holes 601 corresponding to the positions of the first high-strength bolt holes 111 and the third high-strength bolt holes 211. The first connecting plate 6 is fixed to the first vertical plate 11 and the third vertical plate 21 through the first connecting plate high-strength bolt holes 601, and the first vertical plate 11 is fixedly connected to the third vertical plate 21.

[0023] High-strength bolts pass through the first connection plate high-strength bolt hole 601 and the first high-strength bolt hole 111 in sequence to fix the first connection plate 6 to the first H-beam 1; in addition, high-strength bolts pass through the first connection plate high-strength bolt hole 601 and the third high-strength bolt hole 211 in sequence to fix the second H-beam 2 to the first connection plate 6. The first connection plate 6 is installed on the outer side of the first vertical plate 11 and the third vertical plate 21 to fix the first H-beam 1 and the second H-beam 2.

[0024] High-strength bolts are sequentially passed through the second connecting plate high-strength bolt hole 611 and the second high-strength bolt hole 121 to fix the first H-beam 1 and the second connecting plate 61; high-strength bolts are passed through the second connecting plate high-strength bolt hole 611 and the fourth high-strength bolt hole 221 to fix the second H-beam 2 and the second connecting plate 61; the second connecting plate 61 is installed on the outer side of the third vertical plate 21 and the fourth vertical plate 22 to fix the first H-beam 1 and the second H-beam 2.

[0025] Since H-shaped steel is usually used as a support column, the height of H-shaped steel is usually high, and it is inconvenient to lock and fix the inner side of the first vertical plate 11, the second vertical plate 12, the third vertical plate 21, and the fourth vertical plate 22 with high-strength bolts, so it is necessary to set hand holes on the first horizontal plate 13 and the second horizontal plate 23 to facilitate the locking and installation of high-strength bolts. The hand hole on the first horizontal plate 13 is the first hand hole 131, and the hand hole on the second horizontal plate 23 is the second hand hole 231. The first hand hole 131 and the second hand hole 231 are roughly flush with the height of the first connecting plate 6 and the second connecting plate 61.

[0026] Cutting hand holes on the first horizontal plate 13 and the second horizontal plate 23 will reduce the strength of the hand holes of the first horizontal plate 13 and the second horizontal plate 23. Therefore, in order to enhance the strength of the first hand hole 131 and the second hand hole 231, a reinforcing plate 7 is provided at the first hand hole 131 and the second hand hole 231 to enhance the strength of the first hand hole 131 and the second hand hole 231. The reinforcing plate 7 is a circular reinforcing plate 7, and a through hole 72 for a hand to pass through is provided in the middle of the reinforcing plate 7. The through hole 72 can be a shape such as a circle, a square or a rectangle that can be passed through by a hand. The staff passes through the through hole 72 to fix and connect the high-strength bolts located on the inner side of the first vertical plate, the second vertical plate 12, the third vertical plate 21, and the fourth vertical plate 22.

[0027] The number of reinforcing plates 7 disposed on the first hand hole 131 and the second hand hole 231 is two. Figure 6 As shown, a boss 71 is provided on the reinforcing plate 7, and the two reinforcing plates 7 are respectively located on both sides of the first hand hole 131 and the second hand hole 231, the boss 71 is located in the first hand hole 131 and the second hand hole 231, and there is a welding gap between the two bosses 71 installed on the first hand hole 131 and the second hand hole 231, and the reinforcing plate 7 is fixed to the first hand hole 131 and the second hand hole 231 by welding.

[0028] Embodiment 2:

[0029] like Figure 2 As shown, the difference between the second embodiment and the first embodiment is that it further includes a third H-shaped steel 3, which includes a fifth vertical plate 31 and a sixth vertical plate 32 and a third horizontal plate 33 that fixedly connects the fifth vertical plate 31 and the sixth vertical plate 32; the length of the fifth vertical plate 31 is equal to the sum of the lengths of the second vertical plate 12 and the fourth vertical plate 22. One end of the fifth vertical plate 31 is flush with one end of the outer side of the second vertical plate 12, and the other end is flush with one end of the outer side of the fourth vertical plate 22.

[0030] The fifth vertical plate 31 is provided with a sixth high-strength bolt hole corresponding to the fifth high-strength bolt hole 121 of the second vertical plate 12 and the fourth high-strength bolt hole 221 on the fourth vertical plate 22. The high-strength bolts pass through the fifth high-strength bolt hole 311, the second connecting plate high-strength bolt hole 611 and the second high-strength bolt hole 121 in sequence to fix the third H-shaped steel 3 with the first H-shaped steel 1. The high-strength bolts pass through the fifth high-strength bolt hole 311, the second connecting plate high-strength bolt hole 611 and the fourth high-strength bolt hole 221 in sequence to fix the third H-shaped steel 3 with the second H-shaped steel 2. The third horizontal plate 33 is provided with a third hand hole 331 that is consistent with the first horizontal plate 13 and the second horizontal plate 23. The third hand hole 331 is also reinforced by the reinforcement plate 7.

[0031] Embodiment three:

[0032] like Figure 3-4 As shown, the difference between the third embodiment and the first embodiment is that it also includes a fourth H-shaped steel 4, a fifth H-shaped steel 5 and a third connecting plate 62. The fourth H-shaped steel 4 includes a seventh vertical plate 41, an eighth vertical plate 42 and a fourth horizontal plate 43 that fixes the seventh vertical plate 41 and the eighth vertical plate 42. The end of the seventh vertical plate 41 is flush with the end of the second vertical plate 12, and the seventh vertical plate 41 is provided with a seventh high-strength bolt hole 411 corresponding to the position of the second high-strength bolt hole 121. The high-strength bolt passes through the seventh high-strength bolt hole 411, the second connecting plate high-strength bolt hole 611 and the second high-strength bolt hole 121 in sequence to fix the seventh vertical plate 41, the second connecting plate 61 and the second vertical plate 12.

[0033] The fifth H-shaped steel 5 includes a ninth vertical plate 51, a tenth vertical plate 52, and a fifth horizontal plate 53 that fixes the ninth vertical plate 51 and the tenth vertical plate 52. The ninth vertical plate 51 is attached to the second connecting plate 61, one end of which is flush with the fourth vertical plate 22, and the other end of which is overlapped with the seventh vertical plate 41. The ninth vertical plate 51 is provided with a plurality of ninth high-strength bolt holes 511 corresponding to the positions of the fourth high-strength bolt holes 221. The high-strength bolts pass through the ninth high-strength bolt holes 511, the second connecting plate high-strength bolt holes 611, and the fourth high-strength bolt holes 221 in sequence to fix the fifth H-shaped steel 5, the second connecting plate 61, and the second H-shaped steel 2.

[0034] The eighth vertical plate 42 and the tenth vertical plate 52 are respectively provided with an eighth high-strength bolt hole 421 and a tenth high-strength bolt hole 521, and the third connecting plate 62 is provided with a third connecting plate high-strength bolt hole 621 corresponding to the position of the eighth high-strength bolt hole 421 and the tenth high-strength bolt hole 521. The high-strength bolt passes through the third connecting plate high-strength bolt hole 621 and the eighth high-strength bolt hole 421 to connect the third connecting plate 62 with the fourth H-shaped steel 4, and another high-strength bolt passes through the third connecting plate high-strength bolt hole 621 and the tenth high-strength bolt hole 521 to fix the third connecting plate 62 with the fifth H-shaped steel 5. The third connecting plate 62 fixes the fourth H-shaped steel 4 and the fifth H-shaped steel 5.

[0035] In order to facilitate the high-strength bolt fixing and installation inside the fourth H-shaped steel 4 and the fifth H-shaped steel 5, a fourth hand hole 431 and a fifth hand hole 531 are provided on the fourth cross plate 43 and the fifth cross plate 53, and a reinforcement plate 7 is welded on the fourth hand hole 431 and the fifth hand hole 531 to ensure the strength of the hand hole position.

[0036] like Figure 5 As shown, a modular steel structure member using connection nodes may include the connection nodes of embodiments 1 to 3, and two adjacent connection nodes are connected by a connection column 8, and the connection column 8 can be overlapped on the outer wall of each vertical plate and each horizontal plate. The connection column 8 is welded and fixed to each vertical plate and horizontal plate by an L-shaped connection plate. The modular steel structure can also be reinforced by overlapping support members, platform beams, frame beams and other reinforcement members between each vertical plate according to needs.

[0037] In summary, the present invention uses multiple H-shaped steels to overlap through high-strength bolts and connecting plates. The H-shaped steel plates are transported, and the structure of the connection nodes is relatively simple, with fewer components, which is convenient for storage classification and on-site overlap. A number of hand holes are set on the horizontal plate of the H-shaped steel, which facilitates the installation and connection of high-strength bolts, greatly improving the assembly efficiency, high splicing rate, strong integrity, simple structure, and convenient construction.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A connection node of a modular steel structure, characterized in that: It comprises at least two H-shaped steels, a plurality of connecting plates and a plurality of high-strength bolts; the H-shaped steel comprises a first H-shaped steel and a second H-shaped steel; the first H-shaped steel comprises a first vertical plate, a second vertical plate and a first horizontal plate connecting the first vertical plate and the second vertical plate; the second H-shaped steel comprises a third vertical plate, a fourth vertical plate and a second horizontal plate connecting the third vertical plate and the fourth vertical plate; The outer side surfaces of the first vertical plate and the third vertical plate are flush with each other, and the outer side surfaces of the first vertical plate and the third vertical plate are provided with a plurality of first high-strength bolt holes and third high-strength bolt holes from top to bottom; The outer side surfaces of the second vertical plate and the fourth vertical plate are flush with each other, and the outer side surfaces of the second vertical plate and the fourth vertical plate are provided with a plurality of second high-strength bolt holes and fourth high-strength bolt holes from top to bottom; The connecting plate comprises a first connecting plate and a second connecting plate; the first connecting plate is provided with a plurality of first connecting plate high-strength bolt holes corresponding to the positions of the first high-strength bolt holes and the third high-strength bolt holes, and the second connecting plate is provided with a plurality of second connecting plate high-strength bolt holes corresponding to the positions of the second high-strength bolt holes and the fourth high-strength bolt holes, The high-strength bolts pass through the first high-strength bolt holes and the high-strength bolt holes of the first connecting plate to fix the first H-shaped steel and the first connecting plate; The high-strength bolt passes through the third high-strength bolt hole and the high-strength bolt hole of the first connecting plate to fix the second H-shaped steel to the first connecting plate; The high-strength bolts pass through the second high-strength bolt holes and the high-strength bolt holes of the second connecting plate to fix the first H-shaped steel and the second connecting plate; The high-strength bolts pass through the fourth high-strength bolt holes and the high-strength bolt holes of the second connecting plate to fix the second H-shaped steel and the second connecting plate.

2. The connection node of the modular steel structure according to claim 1, characterized in that; It also includes a third H-shaped steel; the third H-shaped steel includes a fifth vertical plate, a sixth vertical plate and a third horizontal plate connecting the fifth vertical plate and the sixth vertical plate; The length of the fifth vertical plate is equal to the sum of the lengths of the second vertical plate and the fourth vertical plate; the fifth vertical plate is provided with a plurality of fifth high-strength bolt holes and sixth high-strength bolt holes corresponding to the positions of the second high-strength bolt holes and the fourth high-strength bolt holes; The high-strength bolts are passed through the fifth high-strength bolt hole, the second connecting plate high-strength bolt hole, and the second high-strength bolt hole in sequence to fix the third H-shaped steel plate, the second connecting plate, and the first H-shaped steel plate; The high-strength bolts pass through the sixth high-strength bolt hole, the second connecting plate high-strength bolt hole, and the fourth high-strength bolt hole in sequence to fix the third H-shaped steel plate, the second connecting plate, and the second H-shaped steel plate; The third horizontal plate is provided with a plurality of third hand holes.

3. The connection node of modular steel structure according to claim 1, characterized in that; Also includes a third connecting plate, a fourth H-shaped steel and a fifth H-shaped steel; The fourth H-shaped steel comprises a seventh vertical plate, an eighth vertical plate and a fourth horizontal plate connecting the seventh vertical plate and the eighth vertical plate; The seventh vertical plate is provided with a plurality of seventh high-strength bolt holes corresponding to the positions of the second high-strength bolt holes; The end of the seventh vertical plate is flush with the end of the second vertical plate; the high-strength bolts pass through the seventh high-strength bolt hole, the second connecting plate high-strength bolt hole and the second high-strength bolt hole to connect the fourth H-shaped steel with the first H-shaped steel; The eighth vertical plate is provided with a plurality of eighth high-strength bolt holes from top to bottom; the fourth horizontal plate is provided with a plurality of fourth hand holes; The fifth H-shaped steel comprises a ninth vertical plate, a tenth vertical plate and a fifth horizontal plate connecting the ninth vertical plate and the tenth vertical plate; The ninth vertical plate is provided with a plurality of ninth high-strength bolt holes corresponding to the positions of the fourth high-strength bolt holes; The end of the ninth vertical plate is flush with the end of the fourth vertical plate; the high-strength bolts sequentially pass through the ninth high-strength bolt hole, the second connecting plate high-strength bolt hole and the fourth high-strength bolt hole to connect the fifth H-shaped steel with the second H-shaped steel; The tenth vertical plate is provided with a plurality of tenth high-strength bolt holes from top to bottom; the fifth horizontal plate is provided with a plurality of fifth hand holes; The third connecting plate is provided with a plurality of third connecting plate high-strength bolt holes corresponding to the positions of the eighth high-strength bolt hole and the tenth high-strength bolt hole; The third connecting plate, the fourth H-shaped steel and the fifth H-shaped steel are fixedly connected by high-strength bolts.

4. The connection node of modular steel structure according to claim 3, characterized in that; The first transverse plate is provided with a plurality of first hand holes, and the second transverse plate is provided with a plurality of second hand holes.

5. The connection node of modular steel structure according to claim 4, characterized in that; It also includes a reinforcing plate, which is installed on the first hand hole, the second hand hole, the fourth hand hole and the fifth hand hole; the reinforcing plate is a circular reinforcing plate, and a through hole is provided in the middle of the reinforcing plate.

6. The connection node of modular steel structure according to claim 5, characterized in that; The reinforcement plate is provided with a boss, and the number of reinforcement plates installed on the first hand hole, the second hand hole, the fourth hand hole and the fifth hand hole is two; The two reinforcing plates are respectively installed on both sides of the first hand hole, the second hand hole, the fourth hand hole and the fifth hand hole; the boss is located in the first hand hole, the second hand hole, the fourth hand hole and the fifth hand hole, The reinforcing plate is fixed to the first hand hole, the second hand hole, the fourth hand hole and the fifth hand hole by welding.

7. A modular steel structure using a connection node, characterized in that; The invention comprises a plurality of connection nodes according to any one of claims 1 to 6, wherein two adjacent connection nodes are fixedly connected by connection columns.

8. The modular steel structure member using connection nodes as claimed in claim 7, characterized in that; The connection column and the connection node are welded via an L-shaped connection plate.

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