Steel structure

Abstract

The invention relates to a steel structure which comprises a left row of stand columns and a right row of stand columns, and mounting holes are formed in one row of stand columns; one end of the cross beam is erected in the mounting hole of one stand column, and the other end of the cross beam is connected to the other corresponding stand column; the supporting plate is arranged at the bottom of the mounting hole and is used for supporting the end part of the cross beam; the pressing plate is arranged in the upper side of the mounting hole and is used for being matched with the supporting plate to limit the end part of the cross beam in the vertical direction; the fixing mechanism is arranged on the stand column and is used for fixing the end part of the cross beam; and the guide mechanism is arranged on the upright post and is used for guiding the cross beam to a correct position when the cross beam is mounted. When the cross beam is installed, after the cross beam penetrates into the installation hole, positioning in the position adjusting process of the cross beam is limited through the installation hole, the direct contact time of a worker and the cross beam in the cross beam positioning process is greatly shortened, and then the safety risk of the worker in the cross beam installation and positioning process is greatly reduced.

Description

Technical Field

[0001] The present application relates to the field of building structures, and in particular to a steel structure. Background Art

[0002] Steel structures are hailed by experts as the "green buildings" of the 21st century because of their light weight, high strength, good earthquake resistance, recyclability, and less environmental pollution during construction and demolition.

[0003] During the installation of steel structures, the installation positioning of steel structures is the focus of installation. At present, steel beams are usually connected by bolts. The positioning before the steel beams are connected is to lift the steel beams to a suitable height by a crane, and then the workers at both ends push or slightly rotate the steel beams to align the installation holes on the steel beams with the installation holes on the columns, and then fix them by bolts.

[0004] With respect to the above-mentioned operation process, the inventor believes that there are certain safety risks in having the workers push the steel beam to rotate and move it slightly. Summary of the invention

[0005] In order to solve the problem that the connection and positioning between the traditional steel structure columns and steel beams is difficult, the present application provides a steel structure.

[0006] The steel structure provided in this application adopts the following technical solution: A steel structure comprising: The columns are arranged in two rows, one of which has mounting holes; A crossbeam, one end of which is mounted in a mounting hole of a column, and the other end is connected to another corresponding column; A support plate is provided at the bottom of the mounting hole and is used to support the end of the beam; A pressure plate is arranged on the upper side of the mounting hole and is used to cooperate with the support plate to limit the end of the beam in the vertical direction; A fixing mechanism, provided on the column, for fixing the end of the beam; The guiding mechanism is arranged on the column and is used to guide the crossbeam to the correct position when installing the crossbeam.

[0007] Through the above technical solution, when installing the beam, the staff guides the beam to pass through the installation hole, and then the positioning of the beam during the position adjustment process is performed by the installation hole, so that during the installation of the beam, the staff only needs to manually adjust the end position of the beam when the beam passes through the installation hole, which greatly reduces the direct contact time between the staff and the beam during the positioning of the beam, thereby greatly reducing the safety risks of the staff during the installation and positioning of the beam, and after the end of the beam enters the installation hole, the beam is guided to the specified position by the guiding mechanism, making the positioning of the beam more convenient.

[0008] Optionally, the width and height of the cross section of the beam are smaller than the width and height of the mounting hole, two baffles are provided on the top wall of the support plate, the edges of the beam are provided with rounded corners, and the opposite sides of the two baffles are also provided with matching rounded corners, and when the end of the beam is mounted in the mounting hole, the rounded surface on the beam fits with the rounded surface of the baffle.

[0009] Optionally, an insert plate is provided on the bottom wall of the pressure plate, and the insert plate is used to fill the gap between the crossbeam and the inner wall of the column.

[0010] Optionally, the fixing mechanism includes: A plurality of fixing bolts are provided and evenly distributed on the two opposite side walls of the column, and pass through the side walls of the column, the plug plate and the crossbeam in sequence; A plurality of fixing nuts are provided corresponding to the fixing bolts, and threads are installed on the fixing bolts to fix the columns and beams.

[0011] Optionally, a support block is provided on the top wall of the pressure plate, and the support block is slidably installed in the column, and the support block is connected to the inner wall of the column.

[0012] Optionally, the mounting hole passes through the column, and the guiding mechanism includes: A connecting block is arranged in the end of the beam and is provided with a first positioning hole, wherein the diameter of the first positioning hole at one end facing the end of the beam is smaller than the diameter of the first positioning hole at one end facing the inside of the beam; A connecting plate, arranged on a side of the column away from the cross beam, having a second positioning hole corresponding to the first positioning hole, wherein the aperture of the second positioning hole on the side facing the cross beam is smaller than the aperture of the second positioning hole on the side away from the cross beam; A first positioning block, slidably mounted in the first positioning hole; A second positioning block, slidably mounted in the second positioning hole; A tensioning screw, one end of which is connected to the first positioning block and the other end of which slides through the second positioning block; A tensioning nut, threadedly mounted on one end of the tensioning screw passing through the second positioning block; By tightening the tightening nut, the first positioning block is slidably installed in the first positioning hole, and the second positioning block is slidably installed in the second positioning hole, thereby pulling one end of the beam to a specified position.

[0013] Optionally, a first support plate is provided on the connecting plate, the first support plate is embedded in one end of the mounting hole, and the bottom wall of the first support plate is in contact with the top wall of the beam.

[0014] Optionally, the support block is tubular, and the support block is connected to the column via support bolts and support nuts. A limit block is provided on the inner wall of the support block, and a placement groove is opened on the limit block for placing and limiting the rotation of the support nut, and the support nut is placed in the placement groove.

[0015] Optionally, the limiting blocks are located at four top corners of the inner wall of the supporting block.

[0016] Optionally, a second support plate is embedded in the end of the mounting hole away from the connecting plate. When the beam is erected, the bottom wall of the second support plate fits into the top wall of the beam, and the connecting plate and the second support plate are connected by connecting bolts and connecting nuts.

[0017] To summarize, during the installation of the present application, the staff guides the beam to pass through the mounting hole, and then the positioning of the beam during the position adjustment process is carried out by the cooperation between the mounting hole, the plug plate, the pressure plate and the support block, so that during the installation of the beam, the staff only needs to manually adjust the end position of the beam during the process of the beam passing through the mounting hole, which greatly reduces the direct contact time between the staff and the beam during the positioning of the beam, thereby greatly reducing the safety risks of the staff during the installation and positioning of the beam, and after the end of the beam enters the mounting hole, the beam is guided to the specified position through the guiding mechanism, making the positioning of the beam more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of one of the columns with mounting holes and one of the crossbeams of the present application.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the present application after the column is cut in half.

[0020] Figure 3 This is an exploded view of the column of the present application after being cut in half.

[0021] Figure 4 This is an exploded view of the column cut in half from another angle of the present application, in which the bolts and nuts are hidden.

[0022] Figure 5 yes Figure 4 Enlarged schematic diagram of part A in the middle.

[0023] Figure 6 This is a cross-sectional view of the present application after removing the pillars.

[0024] Figure 7 yes Figure 6 Enlarged schematic diagram of part B in the middle.

[0025] Those skilled in the art will appreciate that the elements in the drawings are shown for simplicity and clarity and are not necessarily drawn to scale. For example, the size and position of some elements in the drawings may be exaggerated relative to other elements to help improve understanding of the embodiments of the present invention.

[0026] Figure numerals: 1, column; 11, mounting hole; 2, crossbeam; 3, support plate; 31, baffle; 32, limit bar; 4, pressure plate; 41, support block; 411, limit block; 412, placement slot; 42, support bolt; 43, support nut; 44, plug plate; 5, fixing mechanism; 52, fixing bolt; 53, fixing nut; 6, guiding mechanism; 61, connecting block; 611, first positioning hole; 62, connecting plate; 621, second positioning hole; 63, first positioning block; 64, second positioning block; 65, tightening screw; 66, tightening nut; 7, fillet; 8, chamfer; 9, first support plate; 91, second support plate; 92, connecting bolt; 93, connecting nut. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1 —7 further describes this application in detail.

[0028] The present application embodiment discloses a steel structure, referring to Figure 1 , including two rows of steel columns 1 vertically fixed on the ground and a corresponding number of steel beams 2, the beams 2 are mounted on the columns 1, one row of columns 1 is provided with rectangular mounting holes 11 corresponding to the beams 2, and one end of the beam 2 is mounted in the mounting hole 11.

[0029] Reference Figure 2 and Figure 3 A support plate 3, a pressure plate 4, a fixing mechanism 5 and a guiding mechanism 6 are provided in the mounting hole 11. The support plate 3 is mounted at the bottom of the mounting hole 11, one end of the beam 2 is mounted on the support plate 3, the pressure plate 4 is pressed against the top wall of the beam 2, the fixing mechanism 5 is used to fix the beam 2 and the column 1, and the guiding mechanism 6 is used to guide one end of the beam 2 to penetrate into the mounting hole 11 when the beam 2 is installed.

[0030] Reference Figure 2 and Figure 3The mounting hole 11 passes through the column 1, and the length and width of the cross section of the beam 2 are smaller than the length and width of the mounting hole 11, so as to facilitate the insertion of one end of the beam 2 into the mounting hole 11, and minimize the difficulty of operation when the beam 2 is separated from the column 1 and the end position of the beam 2 needs to be manually adjusted.

[0031] A stop bar 31 is integrally provided on both sides of the support plate 3, and a rounded corner 7 is provided on the opposite side of the stop bar 3 and at the junction with the support plate 3. Beam 2 One end of the beam 2 is mounted on the support plate 3, and four corners of the outer wall of the beam 2 are provided with rounded corners 7, and the rounded corner 7 on the beam 2 is in contact with the rounded corner 7 on the support plate 3.

[0032] Reference Figure 2 and Figure 3 A square tube-shaped support block 41 is integrally provided on the top wall of the pressure plate 4. The support block 41 and the pressure plate 4 are both slidably installed in the column 1. When the pressure plate 4 is pressed against the top wall of the beam 2, the support block 41 fills and supports the remaining space in the mounting hole 11 except the beam 2. The support block 41 is fixed to the opposite side walls of the column 1 through a plurality of connecting bolts 92 and connecting nuts 93.

[0033] Reference Figure 2 and Figure 3 Two plug-in plates 44 are integrally arranged on the bottom wall of the pressure plate 4. The two plug-in plates 44 are respectively inserted into the gaps between the two sides of the beam 2 and the inner wall of the column 1 as fillers. The lower ends of the two opposite sides of the two plug-in plates 44 are provided with chamfers 8 to guide the plug-in plates 44 to be inserted into the gaps between the beam 2 and the column 1. The connection between the pressure plate 4 and the plug-in plates 44 is also provided with fillets 7 to fit the top wall of the beam 2. The fixing mechanism 5 includes a plurality of fixing bolts 52 and a plurality of fixing nuts 53. The fixing bolts 52 are evenly distributed on the opposite side walls of the column 1. One end of the fixing bolt 52 passes through the side wall of the column 1, the plug-in plates 44 and the side wall of the beam 2 in turn and is located inside the beam 2. The fixing nut 53 is tightened on the end of the fixing bolt 52 located inside the beam 2, so that the beam 2, the plug-in plates 44 and the column 1 are fixedly connected as a whole.

[0034] Reference Figure 2 and Figure 3 The beam 2 is centered and limited by two stop bars 31, and the rounded corners 7 on the beam 2 guide the end of the beam 2 to slide between the two stop bars 31 when it falls down, and at the same time, the end of the beam 2 is not easy to rest on the top wall of the beam 2 when it falls. After one end of the beam 2 is placed on the support plate 3, the vertical displacement of the beam 2 is limited by the pressure plate 4.

[0035] The mounting hole 11 of the column 1 is reinforced by the cooperation between the end of the cross beam 2 and the support block 41, so that the side wall of the column 1 where the mounting hole 11 is opened is fixed by the cross beam 2 and the support block 41 through the fixing bolts 52, fixing nuts 53 or connecting bolts 92, connecting nuts 93, thereby making it difficult for the side wall of the mounting hole 11 of the column 1 to bend and deform.

[0036] The inserting plate 44 is inserted into the gap between the column 1 and the beam 2 to fill the gap, so that the side walls of the column 1 and the beam 2 will not be deformed after the fixing bolts 52 are tightened.

[0037] If a disaster such as an earthquake occurs, the column 1 and the beam 2 will deform to absorb the impact force caused by the earthquake. However, when there is a gap at the connection between the column 1 and the beam 2, this place will become a concentration point of deformation stress, which is prone to breakage, causing the entire steel structure to fall apart. When the gap at the connection between the column 1 and the beam 2 is filled with the insert plate 44, the integrity of the connection between the column 1 and the beam 2 is strengthened, making the connection between the column 1 and the beam 2 more stable and less likely to break.

[0038] Reference Figure 2 and Figure 3 The fixing bolts 52 and the supporting bolts 42 are vertically spaced apart. The supporting bolts 42 on the same side of the column 1 are arranged in two rows. A limiting block 411 is integrally provided at the four top corners inside the supporting block 41. The limiting block 411 is provided with a placement groove 412 for placing and limiting the rotation of the supporting nut 43. The supporting nut 43 is placed in the placement groove 412. When installing the supporting bolt 42, the supporting bolt 42 can be directly tightened.

[0039] When deformation occurs, the four top corners inside the support block 41 are stress concentration sites. The four top corners inside the support block 41 are reinforced by the limit block 411, so that the support block 41 is not easily torn at its top corners when an earthquake disaster occurs.

[0040] Reference Figure 2 and Figure 3 The mounting holes 11 extend from both sides of the support plate 3, and a limiting strip 32 is integrally provided on the bottom walls of both sides of the support plate 3 outside the mounting holes 11. The limiting strip 32 fits with the outer side wall of the column 1 to limit the support plate 3, making it difficult for the support plate 3 to slide out of the mounting holes 11 and facilitating the installation of the support plate 3. The cross section of the limiting strip 32 is triangular, which reduces the weight of the limiting strip 32 and enhances the anti-deformation ability of the limiting strip 32.

[0041] Reference Figure 3 , Figure 4 and Figure 5The guiding mechanism 6 includes a connecting plate 62 placed on the end of the support plate 3 outside the mounting hole 11 and a connecting block 61 integrally arranged in the end of the beam 2. A first supporting plate 9 is integrally arranged on the connecting plate 62. The first supporting plate 9 is embedded in the mounting hole 11. The first supporting plate 9 is in contact with the side wall of the supporting block 41, and the bottom wall of the first supporting plate 9 is in contact with the top wall of the end of the beam 2. The mounting hole 11 of the column 1 is filled and reinforced by the first supporting plate 9.

[0042] Reference Figure 4 and Figure 5 The connecting block 61 is welded to the left and right opposite side walls of the beam 2, and the opposite side walls of the beam 2 are pulled, so that the opposite side walls of the beam 2 are not easily deformed due to force. At the same time, both ends of the connecting block 61 are connected to the vertical inner wall of the beam in a triangular shape, which increases the connection area of ​​the connecting block 61 to the side wall of the beam 2, thereby improving the connection stability of the connecting block 61 to the beam 2. At the same time, when tightening the fixing bolt 52 and the fixing nut 53, one end of the wrench that clamps the fixing bolt 52 can be placed on the connecting block 61 as a support.

[0043] Reference Figure 4 , Figure 5 , Figure 6 and Figure 7 A first positioning hole 611 is provided on the connecting block 61, and the aperture of the first positioning hole 611 at one end facing the end of the beam 2 is smaller than the aperture of the first positioning hole 611 at one end facing the inside of the beam 2. A second positioning hole 621 corresponding to the first positioning hole 611 is provided on the connecting plate 62, and the aperture of the second positioning hole 621 at one side facing the beam 2 is smaller than the aperture of the second positioning hole 621 at one side facing away from the beam 2.

[0044] Reference Figure 4 , Figure 5 , Figure 6 and Figure 7 A first positioning block 63 is slidably installed in the first positioning hole 611, a second positioning block 64 is slidably installed in the second positioning hole 621, a tightening screw 65 is fixedly installed on the first positioning block 63, one end of the tightening screw 65 is a regular hexagon, and a second positioning block 64 is slidably installed in the second positioning hole 621, and one end of the tightening screw 65 coaxially slides through the second positioning block 64.

[0045] Reference Figure 4 , Figure 5 , Figure 6 and Figure 7The tightening screw 65 passes through the second positioning block 64, and a tightening nut 66 is threadedly installed on one end. In the process of guiding the end of the beam 2 to move to the specified position, the tightening nut 66 is rotated to make the end of the beam 2 approach the connecting plate 62 until the end of the beam 2 is tightly against the connecting plate 62, the first positioning block 63 is completely entered into the first positioning hole 611, and the second positioning block 64 is completely entered into the second positioning hole 621, thereby completing the positioning of the end of the beam 2.

[0046] Reference Figure 3 and Figure 4 A second support plate 91 is embedded in the end of the mounting hole 11 away from the first support plate 9, and the bottom wall of the second support plate 91 is in contact with the top wall of the crossbeam 2. The side wall of the column 1 on the other side of the mounting hole 11 is supported by the second support plate 91. At the same time, connecting bolts 92 and connecting nuts 93 are provided between the connecting plate 62 and the second support plate 91. The connecting bolts 92 pass through the connecting plate 62, the first support plate 9, the support block 41 and the second support plate 91 in sequence, and then cooperate with the connecting nuts 93 to fix the connecting plate 62 and the second support plate 91 on the column 1.

[0047] The implementation principle of a steel structure in an embodiment of the present application is as follows: after the vertical installation of the column 1 is completed, the crossbeam 2 is lifted to the installation hole 11 of the column 1 by a crane, and then the support plate 3 is first erected at the bottom of the installation hole 11, and then the support nut 43 is placed in the placement groove 412, and the pressure plate 4 and the support block 41 are slidably installed into the inside of the column 1. After the pressure plate 4 and the support block 41 are slid up, the pressure plate 4 is temporarily fixed by inserting the pin.

[0048] The first positioning block 63 and the tensioning screw 65 are slidably installed in the first positioning hole 611, and one end of the beam 2 is inserted into the installation hole 11 by means of a crane and manual pushing by the staff, and then the end position of the beam 2 is fine-tuned, and the latch is pulled out at the same time, and the pressure plate 4 and the support block 41 slide down under the action of gravity so that the plug plate 44 is pressed against the top wall of the end of the beam 2, and then at this time, the end position of the beam 2 is fine-tuned, so that the plug plate 44 is respectively inserted into the two sides of the beam 2 under the guidance of the fillet 7 of the beam 2. The crossbeam 2 can be centered, and during the centering process, the crossbeam 2 only needs to be manually pushed to rotate for alignment when the crossbeam 2 is inserted into the mounting hole 11. After the crossbeam 2 enters the mounting hole 11, the weight of the pressure plate 4, the support block 41 and the insert plate 44, together with the guidance of the chamfer 8 and the fillet 7, are used to adjust the center of the crossbeam 2. Therefore, after the crossbeam 2 enters the mounting hole, the installer only needs to apply a small force to complete the centering of the crossbeam 2.

[0049] The crossbeam 2 continues to extend into the mounting hole 11 until the tensioning screw 65 extends out of the mounting hole 11, and then the mounting plate is placed on the support plate 3, so that the tensioning screw 65 extends out of the second positioning hole 621, and then the second positioning block 64 is slidably installed on the tensioning screw 65, and the tensioning nut 66 is threadedly installed on the tensioning screw 65, and the connecting plate 62 is fixed to the support block 41 by the connecting bolt 92 and the connecting nut 93, and then the hexagonal end of the tensioning screw 65 is clamped by a wrench, and then the tensioning nut 66 is turned by the wrench and the crossbeam 2 is lowered in coordination with the rotation of the crane until the first positioning block 63 is completely embedded in the first positioning hole 611, the second positioning block 64 is completely embedded in the second positioning hole 621, and the end of the cross ridge is in contact with the connecting plate 62, thereby completing the positioning of the end of the crossbeam 2.

[0050] After the crossbeam 2 is positioned, first remove the connecting plate 62 so that the pressure plate 4 fits tightly against the top wall of the crossbeam 2, then fix the column 1 and the support block 41 with the support bolts 42 and the support nuts 43, and fix the column 1 and the end of the crossbeam 2 with the fixing bolts 52 and the fixing nuts 53, and then install the connecting plate 62 and the second support plate 91 in turn, fix the connecting plate 62 and the second support plate 91 on the support block 41 with the connecting bolts 92 and the connecting nuts 93, and then tighten the tightening nuts 66 to complete the auxiliary fixation of the connecting plate 62, and then cut off the excess tightening screws 65 to complete the installation and fixation between the crossbeam 2 and the column 1.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A steel structure, characterized in that: include: The columns (1) are arranged in two left and right rows, and the columns (1) in one row are provided with mounting holes (11); A crossbeam (2), one end of which is mounted in a mounting hole (11) of a column (1), and the other end of which is connected to another corresponding column (1); A support plate (3) is arranged at the bottom of the mounting hole (11) and is used to support the end of the crossbeam (2); A pressing plate (4) is arranged on the upper side of the mounting hole (11) and is used to cooperate with the supporting plate (3) to limit the end of the crossbeam (2) in the vertical direction; A fixing mechanism (5) is provided on the column (1) and is used to fix the end of the crossbeam (2); A guiding mechanism (6) is provided on the column (1) and is used to guide the crossbeam (2) to a correct position when the crossbeam (2) is installed.

2. A steel structure according to claim 1, characterized in that: The width and height of the cross section of the cross beam (2) are both smaller than the width and height of the mounting hole (11); two retaining bars (31) are provided on the top wall of the support plate (3); the edges of the cross beam (2) are both provided with rounded corners (7); the opposite sides of the two retaining bars (31) are also provided with matching rounded corners (7); when the end of the cross beam (2) is mounted in the mounting hole (11), the rounded corner (7) surface on the cross beam (2) fits with the rounded corner (7) surface of the retaining bar (31).

3. A steel structure according to claim 2, characterized in that: An inserting plate (44) is provided on the bottom wall of the pressing plate (4), and the inserting plate (44) is used to fill the gap between the crossbeam (2) and the inner wall of the column (1).

4. A steel structure according to claim 3, characterized in that: The fixing mechanism (5) comprises: A plurality of fixing bolts (52) are provided and are evenly distributed on two opposite side walls of the column (1), and pass through the side wall of the column (1), the insert plate (44) and the crossbeam (2) in sequence; A plurality of fixing nuts (53) are provided corresponding to the fixing bolts (52), and are threadedly mounted on the fixing bolts (52) to fix the upright column (1) and the crossbeam (2).

5. A steel structure according to claim 3, characterized in that: A support block (41) is provided on the top wall of the pressure plate (4); the support block (41) is slidably mounted in the column (1); and the support block (41) is connected to the inner wall of the column (1).

6. A steel structure according to claim 1, characterized in that: The mounting hole (11) passes through the column (1), and the guiding mechanism (6) comprises: a connecting block (61) disposed inside the end of the crossbeam (2), and having a first positioning hole (611) formed thereon, wherein the diameter of the first positioning hole (611) at one end facing the end of the crossbeam (2) is smaller than the diameter of the first positioning hole (611) at one end facing the interior of the crossbeam (2); A connecting plate (62) is arranged on a side of the column (1) away from the crossbeam (2), and is provided with a second positioning hole (621) corresponding to the first positioning hole (611), wherein the hole diameter of the second positioning hole (621) on the side facing the crossbeam (2) is smaller than the hole diameter of the second positioning hole (621) on the side away from the crossbeam (2); A first positioning block (63) slidably mounted in the first positioning hole (611); A second positioning block (64) slidably mounted in the second positioning hole (621); A tensioning screw rod (65), one end of which is connected to the first positioning block (63) and the other end of which slides through the second positioning block (64); A tensioning nut (66) is threadedly mounted on one end of the tensioning screw rod (65) passing through the second positioning block (64).

7. A steel structure according to claim 6, characterized in that: A first support plate (9) is provided on the connecting plate (62), the first support plate (9) being embedded in one end of the mounting hole (11), the bottom wall of the first support plate (9) being in contact with the top wall of the crossbeam (2).

8. A steel structure according to claim 5, characterized in that: The support block (41) is tubular and connected to the column (1) via a support bolt (42) and a support nut (43). A limit block (411) is provided on the inner wall of the support block (41). A placement groove (412) for placing and limiting the rotation of the support nut (43) is provided on the limit block (411). The support nut (43) is placed in the placement groove (412).

9. A steel structure according to claim 8, characterized in that: The limiting blocks (411) are located at the four top corners of the inner wall of the supporting block (41).

10. A steel structure according to claim 7, characterized in that: A second support plate (91) is fitted and embedded in one end of the mounting hole (11) away from the connecting plate (62); when the crossbeam (2) is erected, the bottom wall of the second support plate (91) fits against the top wall of the crossbeam (2); and the connecting plate (62) and the second support plate (91) are connected via connecting bolts (92) and connecting nuts (93).

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