A connection structure and method for H-shaped steel end plates

Abstract

This invention provides an H-shaped steel end plate connection structure and method, belonging to the field of civil engineering steel structure construction technology. It includes an H-shaped steel column, a precast steel beam component, and a connecting end plate. The connecting end plate is fixedly installed on the side of the precast steel beam component near the H-shaped steel column. A disassembly structure is provided between the H-shaped steel column and the connecting end plate. The disassembly structure includes a insertion hole, an insertion block, and a limiting block. The insertion hole is located on one side of the H-shaped steel column, and the insertion block is located on the side of the connecting end plate away from the precast steel beam component. The insertion block passes through the insertion hole, and the limiting block engages with the end of the insertion block that protrudes from the insertion hole to prevent the insertion block from dislodging from the insertion hole. This invention provides an H-shaped steel end plate connection structure that replaces conventional bolt connections, eliminates the need for pre-tightening force, and enables rapid disassembly and assembly of the connecting end plate and the H-shaped steel column, ensuring reuse after secondary disassembly.

Description

Technical Field

[0001] This invention belongs to the field of steel structure construction technology in civil engineering, and more specifically, it relates to an H-shaped steel end plate connection structure and connection method. Background Technology

[0002] In recent years, public health emergencies have occurred frequently, leading to an increasing demand for rapidly deployable mobile medical platforms in the field. Prefabricated steel structures are an optimal choice due to their high mobility, rapid deployment, and strong environmental adaptability, making them suitable for sudden emergency construction tasks.

[0003] The connection nodes of existing H-beam end plates generally require ordinary screws or high-strength bolts. When using bolts, appropriate washers must be used and preload applied, which can easily damage the components. In addition, bolts are prone to corrosion after a period of use, making them unsuitable for secondary disassembly and reuse. Summary of the Invention

[0004] The purpose of this invention is to provide an H-shaped steel end plate connection structure that does not require pre-tightening force during installation and can ensure secondary disassembly and reuse.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: An H-shaped steel end plate connection structure is provided, comprising an H-shaped steel column, a precast steel beam component, and a connecting end plate. The connecting end plate is fixedly disposed on the side of the precast steel beam component near the H-shaped steel column. A disassembly and assembly structure is provided between the H-shaped steel column and the connecting end plate. The disassembly and assembly structure includes a insertion hole, an insertion block, and a limiting block. The insertion hole is opened on one side of the H-shaped steel column, and the insertion block is disposed on the side of the connecting end plate away from the precast steel beam component. The insertion block passes through the insertion hole, and the limiting block engages with one end of the insertion block extending out of the insertion hole to prevent the insertion block from dislodging from the insertion hole.

[0006] In one possible implementation, the upper end face of the limiting block is provided with an anti-detachment groove near the connecting end plate, and the lower end face of the limiting block is provided with a limiting groove in the middle, wherein the limiting groove and the anti-detachment groove are vertically inserted into each other.

[0007] In one possible implementation, the plug-in block includes a first plug-in block and a second plug-in block arranged sequentially from one side of the connecting end plate. A first limiting groove is formed in the middle of the lower end face of the first plug-in block, and a second limiting groove is formed in the middle of the lower end face of the second plug-in block. The first plug-in block and the second plug-in block are attached side by side, and the first limiting groove and the second limiting groove constitute the limiting groove.

[0008] In one possible implementation, a blocking block is provided on the upper part of the first insert block near the connecting end plate. The blocking block is inserted into the upper part of the insertion hole to seal the gap between the insertion hole and the anti-disengagement slot.

[0009] In one possible implementation, the second plug block has connecting blocks on its upper left and right sides on the side away from the connecting end plate, and an adapter groove is provided between the two connecting blocks. The upper part of the plug block at the end away from the connecting end plate is engaged in the adapter groove.

[0010] In one possible implementation, both connecting blocks are provided with a first through hole, and the upper part of the end of the plug block away from the connecting end plate is provided with a second through hole. The two first through holes and the second through hole are coaxially arranged and are fitted with anti-detachment pins.

[0011] In one possible implementation, there are multiple insertion holes arranged in a matrix on one side of the H-shaped steel column. There are also multiple insertion blocks and multiple limiting blocks, which correspond one-to-one with the multiple insertion holes.

[0012] In one possible implementation, the plurality of insertion holes are arranged in two longitudinal rows, with the two rows of insertion holes symmetrically arranged on both sides of the middle plate of the H-shaped steel column.

[0013] The beneficial effects of the H-shaped steel end plate connection structure provided by this invention are as follows: Compared with the prior art, the H-shaped steel column is arranged longitudinally, the precast steel beam is arranged transversely, and the end plate of the precast steel beam is fixedly installed at one end near the H-shaped steel column. The vertical surface of the end plate is parallel to the longitudinal surface of the H-shaped steel column. The disassembly and assembly structure is a structural component for quick disassembly and assembly of the H-shaped steel column and the end plate. The disassembly and assembly structure specifically includes a plug hole, a plug block, and a limiting block. The plug hole is opened on the H-shaped steel column, and the plug block is set on the end plate, with the two arranged opposite to each other. When the end plate and the H-shaped steel column are installed, the end plate drives the plug block to be inserted into the plug hole of the H-shaped steel column. The plug block passes through the plug hole and extends to the inside of the H-shaped steel column. The limiting block and the side of the plug block passing through the H-shaped steel column are engaged to limit the reverse movement of the plug block and prevent it from falling out of the plug hole, thus completing the quick installation of the end plate and the H-shaped steel column. Similarly, the reverse operation enables rapid disassembly of the connecting end plate and the H-shaped steel column. This invention provides an H-shaped steel end plate connection structure that replaces conventional bolt connections, eliminates the need for pre-tightening force, and allows for rapid assembly and disassembly of the connecting end plate and the H-shaped steel column, ensuring reuse after secondary disassembly.

[0014] The present invention also provides a method for connecting H-beam steel end plates, which uses the aforementioned H-beam steel end plate connection structure and includes the following steps:

[0015] S1: Fix the connecting end plate to the end of the precast steel component of the steel beam, move the precast steel component of the steel beam, and the plug on the connecting end plate passes through the plug hole on one side of the H-shaped steel column;

[0016] S2: The first insert block moves from top to bottom, so that the first limiting slot of the first insert block is vertically inserted into the bottom of the anti-disengagement slot of the insert block, and the first insert block moves to the side of the connecting end plate, so that the plug of the first insert block is inserted into the upper part of the insert hole.

[0017] S3: The second insert block moves from top to bottom, so that the second limiting slot of the second insert block is vertically inserted into the bottom of the anti-disengagement slot of the insert block, and the anti-disengagement pin is horizontally inserted into the two first through holes and one second through hole in sequence.

[0018] In one possible implementation, with two rows of insertion holes symmetrically arranged on both sides of the middle plate of the H-shaped steel column, multiple anti-loosening pins on the same side are inserted from the outside to the inside into the corresponding two first through holes and one second through hole.

[0019] The beneficial effects of the H-shaped steel end plate connection method provided by the present invention are as follows: Compared with the prior art, the connecting end plate is first fixed to the end of the precast steel component of the steel beam, the precast steel component of the steel beam is moved, and the plug on the connecting end plate passes through the plug hole on one side of the H-shaped steel column; then the first plug is moved from top to bottom, so that the first limiting groove of the first plug is vertically inserted into the bottom of the anti-detachment groove of the plug, and the first plug is moved to one side of the connecting end plate, so that the plug of the first plug is inserted into the upper part of the plug hole; finally, the second plug is moved from top to bottom, so that the second limiting groove of the second plug is vertically inserted into the bottom of the anti-detachment groove of the plug, and the anti-detachment pin is horizontally inserted into two first through holes and one second through hole in sequence, thereby completing the rapid installation of the connecting end plate and the H-shaped steel column. Similarly, the reverse operation can realize the rapid disassembly of the connecting end plate and the H-shaped steel column. The present invention provides a method for connecting H-shaped steel end plates, which replaces the conventional bolt connection method. It does not require the application of pre-tightening force and can realize the rapid assembly and disassembly of the connecting end plates and H-shaped steel columns, thus ensuring secondary disassembly and reuse. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 An exploded view of an H-beam steel end plate connection structure provided in an embodiment of the present invention;

[0022] Figure 2An assembly process for an H-shaped steel end plate connection structure provided in an embodiment of the present invention. Figure 1 ;

[0023] Figure 3 An assembly process for an H-shaped steel end plate connection structure provided in an embodiment of the present invention. Figure 2 ;

[0024] Figure 4 An assembly process for an H-shaped steel end plate connection structure provided in an embodiment of the present invention. Figure 3 ;

[0025] Figure 5 An assembly process for an H-shaped steel end plate connection structure provided in an embodiment of the present invention. Figure 4 ;

[0026] Figure 6 An assembly process for an H-shaped steel end plate connection structure provided in an embodiment of the present invention. Figure 5 ;

[0027] Figure 7 An assembly process for an H-shaped steel end plate connection structure provided in an embodiment of the present invention. Figure 6 ;

[0028] Figure 8 An assembly process for an H-shaped steel end plate connection structure provided in an embodiment of the present invention. Figure 7 ;

[0029] Figure 9 This is a three-dimensional structural diagram of the first insert block provided in an embodiment of the present invention;

[0030] Figure 10 This is a three-dimensional structural diagram of the second insert block provided in an embodiment of the present invention.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Precast steel beam; 2. Connecting end plate; 3. H-shaped steel column; 4. First insert block; 5. Second insert block; 6. Anti-detachment pin; 7. Insertion block; 8. Insertion hole; 9. Anti-detachment groove; 10. First limiting groove; 11. Second limiting groove; 12. Block; 13. Connecting block; 14. Adaptor groove; 15. First through hole; 16. Second through hole. Detailed Implementation

[0033] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0034] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0035] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] Please see Figure 1 The present invention will now describe an H-shaped steel end plate connection structure. An H-shaped steel end plate connection structure includes an H-shaped steel column 3, a precast steel beam component 1, and a connecting end plate 2. The connecting end plate 2 is fixedly disposed on the side of the precast steel beam component 1 near the H-shaped steel column 3. A disassembly and assembly structure is provided between the H-shaped steel column 3 and the connecting end plate 2. The disassembly and assembly structure includes an insertion hole 8, an insertion block 7, and a limiting block. The insertion hole 8 is located on one side of the H-shaped steel column 3, and the insertion block 7 is disposed on the side of the connecting end plate 2 away from the precast steel beam component 1. The insertion block 7 passes through the insertion hole 8, and the limiting block engages with one end of the insertion block 7 that protrudes from the insertion hole 8 to prevent the insertion block 7 from dislodging from the insertion hole 8.

[0038] This invention provides an H-shaped steel end plate connection structure. Compared with the prior art, the H-shaped steel column 3 is arranged longitudinally, and the precast steel beam component 1 is arranged transversely. A connecting end plate 2 is fixedly installed at one end of the precast steel beam component 1 near the H-shaped steel column 3. The vertical surface of the connecting end plate 2 is parallel to the longitudinal surface of the H-shaped steel column 3. The disassembly and assembly structure is a structural component for quick disassembly and assembly of the H-shaped steel column 3 and the connecting end plate 2. The disassembly and assembly structure specifically includes a plug hole 8, a plug block 7, and a limiting block. The plug hole 8 is opened on the H-shaped steel column 3, and the plug block 7 is set on the connecting end plate 2, with the two arranged opposite each other. When the connecting end plate 2 and the H-shaped steel column 3 are installed, the connecting end plate 2 drives the insertion block 7 to be inserted into the insertion hole 8 of the H-shaped steel column 3. The insertion block 7 passes through the insertion hole 8 and extends to the inside of the H-shaped steel column 3. A limiting block engages with the side of the insertion block 7 that passes through the H-shaped steel column 3 to limit the reverse movement of the insertion block 7 and prevent it from coming out of the insertion hole 8, thus completing the rapid installation of the connecting end plate 2 and the H-shaped steel column 3. Similarly, the reverse operation can achieve rapid disassembly of the connecting end plate 2 and the H-shaped steel column 3. The H-shaped steel end plate connection structure provided by this invention replaces the conventional bolt connection method, does not require the application of pre-tightening force, and can achieve rapid assembly and disassembly of the connecting end plate 2 and the H-shaped steel column 3, providing a guarantee for secondary disassembly and reuse.

[0039] In some embodiments, please refer to Figure 2 The upper end face of the plug-in block 7 is provided with an anti-detachment groove 9 near the connecting end plate 2, and the middle of the lower end face of the limiting block is provided with a limiting groove. The limiting groove and the anti-detachment groove 9 are vertically inserted and engaged.

[0040] An anti-detachment groove 9 is formed on the upper end face of the plug-in block 7 near the connecting end plate 2, thus forming a hook-shaped structure for the plug-in block 7. The height of the plug-in block 7 is the same as the height of the plug-in hole 8, the width of the plug-in block 7 is the same as the width of the plug-in hole 8, and the length of the plug-in block 7 is greater than the depth of the plug-in hole 8, ensuring that the plug-in block 7 can penetrate the plug-in hole 8 while fitting snugly. A limiting groove is formed in the middle of the lower end face of the limiting block, and the direction of the limiting groove is opposite to the direction of the anti-detachment groove 9, with the two rotating relative to each other by 90°. When the plug-in block 7 penetrates the plug-in hole 8, the limiting block moves from top to bottom, causing the limiting groove to be inserted into the anti-detachment groove 9. The upper structure of the limiting block is located in the limiting groove. Since the width of the limiting block is greater than the width of the plug-in hole 8, it can prevent the above-mentioned hook-shaped structure from moving in the opposite direction, preventing the plug-in block 7 from coming out of the plug-in groove, that is, preventing the connecting end plate 2 from detaching from the H-shaped steel column 3.

[0041] Please refer to Figure 1 , Figure 9 and Figure 10The limiting block includes a first insert 4 and a second insert 5 arranged sequentially from one side of the connecting end plate 2. A first limiting slot 10 is provided in the middle of the lower end face of the first insert 4, and a second limiting slot 11 is provided in the middle of the lower end face of the second insert 5. The first insert 4 and the second insert 5 are attached side by side, and the first limiting slot 10 and the second limiting slot 11 constitute the limiting slot.

[0042] Specifically, the limiting block consists of two parts: a first insert 4 and a second insert 5. A first limiting groove 10 is formed in the middle of the lower end face of the first insert 4, and a second limiting groove 11 is formed in the middle of the lower end face of the second insert 5. The first insert 4 is located on the side closer to the connecting end plate 2, and the second insert 5 is located on the side farther from the connecting end plate 2. The first insert 4 and the second insert 5 are placed side-by-side, and at this time, the first limiting groove 10 and the second limiting groove 11 constitute the aforementioned limiting groove. The sum of the thicknesses of the first insert 4 and the second insert 5 is equal to the effective width of the limiting slot exposed after the insert block 7 passes through the insert hole 8. In other words, when the first insert 4 and the second insert 5 are inserted into the anti-detachment slot 9, the first insert 4 abuts against the longitudinal inner side of the H-shaped steel column 3, and the second insert 5 abuts against the inner side wall of the anti-detachment slot 9 away from the connecting end plate 2, which can ensure that the insert block 7 is in a stable state, thereby realizing the installation of the connecting end plate 2 and the H-shaped steel column 3.

[0043] Please refer to Figure 3 , Figure 4 and Figure 9 The first insertion block 4 is provided with a blocking block 12 on the upper part of the side near the connecting end plate 2. The blocking block 12 is inserted into the upper part of the insertion hole 8 to seal the gap between the insertion hole 8 and the anti-disengagement groove 9.

[0044] Specifically, the plug 12 is integrally formed on the upper part of the first insert 4 near the connecting end plate 2. The gap between the upper part of the insert hole 8 and the insertion block 7 is the same as the outer contour of the plug 12, and the extension length of the plug 12 is the same as the hole depth of the insert hole 8. In addition, the sum of the thicknesses of the plug 12 and the first insert 4 is not greater than the effective length of the limiting slot exposed after the insert 7 passes through the insert hole 8, so as to ensure that the first insert 4 together with the plug 12 can be inserted into the limiting slot from top to bottom. Then, the first insert 4 moves towards the connecting end plate 2, thereby driving the plug 12 to be inserted into the upper gap of the insert hole 8, completely sealing the gap, so as to improve the stability of the connection structure.

[0045] Please refer to Figure 5 , Figure 6 and Figure 10 The second plug 5 has connecting blocks 13 on the upper left and right sides of the side away from the connecting end plate 2. An adapter groove 14 is provided between the two connecting blocks 13. The upper part of the plug 7 at the end away from the connecting end plate 2 is engaged in the adapter groove 14.

[0046] Specifically, two connecting blocks 13 are integrally formed on the left and right sides of the upper part of the second insert block 5 away from the connecting end plate 2. After the first insert block 4 is installed, the second insert block 5 is inserted into the anti-detachment slot 9 from top to bottom. One side of the second insert block 5 abuts against the first insert block 4, and the other side of the second insert block 5 abuts against the inner wall of the anti-detachment slot 9 away from the connecting end plate 2. An adapter groove 14 is formed between the two connecting blocks 13. The width of the adapter groove 14 is the same as the width of the insert block 7. The upper end face of the connecting block 13 is flush with the upper end face of the second insert block 5, and the height of the connecting block 13 is the same as the depth of the anti-detachment slot 9. When the second insert block 5 is inserted into the anti-detachment slot 9, the upper part of the end of the insert block 7 away from the connecting end plate 2 is engaged in the adapter groove 14, and the upper end face of the second insert block 5 is flush with the upper end face of the insert block.

[0047] Please refer to Figure 5 , Figure 7 and Figure 8 Both connecting blocks 13 are provided with first through holes 15, and the upper part of the plug block 7 away from the connecting end plate 2 is provided with a second through hole 16. The two first through holes 15 and the one second through hole 16 are coaxially arranged and are provided with anti-detachment pins 6.

[0048] Specifically, when the second insert 5 is inserted into the anti-disengagement slot 9 of the connector 7, the first through holes 15 on the two connecting blocks 13 and the second through hole on the connector 7 are coaxial. An anti-disengagement pin 6 is used to laterally penetrate the two first through holes 15 and one second through hole 16, thereby achieving a stable connection between the second insert 5 and the connector 7. Since the second insert 5 and the connector 7 are not detachable at this time, the plug 12 of the first insert 4 will not exit from the gap at the top of the connector hole 8, thus ensuring a stable fit between the first insert 4, the second insert 5, the connector 7, and the connector hole 8.

[0049] In this configuration, multiple insertion holes 8 are arranged in a matrix on one side of the H-shaped steel column 3. Multiple insertion blocks 7 and limiting blocks are also present, each corresponding to one of the insertion holes 8. Insertion blocks 7 are inserted into the corresponding insertion holes 8 and limited by the corresponding limiting blocks, thus forming multiple matrix-arranged assembly / disassembly structures between the connecting end plate 2 and the H-shaped steel column 3. This significantly improves the stability of the connection between the connecting end plate 2 and the H-shaped steel column 3.

[0050] Preferably, the multiple insertion holes 8 are arranged in two rows longitudinally, and the two rows of insertion holes 8 are symmetrically arranged on both sides of the middle plate of the H-shaped steel column 3, so that the precast steel component 1 of the steel beam is installed in the middle of the longitudinal elevation of the H-shaped steel column 3, thus ensuring the stability of the installation structure of the precast steel component 1 of the steel beam and the H-shaped steel column 3.

[0051] The present invention also provides a method for connecting H-beam steel end plates, which uses the above-mentioned H-beam steel end plate connection structure and includes the following steps:

[0052] S1: Fix the connecting end plate 2 to the end of the precast steel component 1 of the steel beam, move the precast steel component 1 of the steel beam, and the plug block 7 on the connecting end plate 2 passes through the plug hole 8 on one side of the H-shaped steel column 3.

[0053] S2: The first insert block 4 moves from top to bottom, so that the first limiting slot 10 of the first insert block 4 is vertically inserted into the bottom of the anti-disengagement slot 9 of the insert block 7, and the first insert block 4 moves to the side of the connecting end plate 2, so that the plug 12 of the first insert block 4 is inserted into the upper part of the insert hole 8.

[0054] S3: The second insert block 5 moves from top to bottom, so that the second limiting slot 11 of the second insert block 5 is vertically inserted into the bottom of the anti-detachment slot 9 of the insert block 7, and the anti-detachment pin 6 is horizontally inserted into two first through holes 15 and one second through hole 16 in sequence.

[0055] The beneficial effects of the H-shaped steel end plate connection method provided by the present invention are as follows: Compared with the prior art, the connecting end plate 2 is first fixed to the end of the precast steel component 1 of the steel beam, the precast steel component 1 of the steel beam is moved, and the insertion block 7 on the connecting end plate 2 passes through the insertion hole 8 on one side of the H-shaped steel column 3; then the first insertion block 4 is moved from top to bottom, so that the first limiting groove 10 of the first insertion block 4 is vertically inserted into the bottom of the anti-detachment groove 9 of the insertion block 7, and the first insertion block 4 is moved to one side of the connecting end plate 2, so that the blocking block 12 of the first insertion block 4 is inserted into the upper part of the insertion hole 8; finally, the second insertion block 5 is moved from top to bottom, so that the second limiting groove 11 of the second insertion block 5 is vertically inserted into the bottom of the anti-detachment groove 9 of the insertion block 7, and the anti-detachment pin 6 is horizontally inserted into two first through holes 15 and one second through hole 16 in sequence, thereby completing the rapid installation of the connecting end plate 2 and the H-shaped steel column 3. Similarly, the reverse operation can realize the rapid disassembly of the connecting end plate 2 and the H-shaped steel column 3. The present invention provides a method for connecting H-shaped steel end plates, which replaces the conventional bolt connection method. It does not require the application of pre-tightening force and can realize the rapid assembly and disassembly of the connecting end plate 2 and the H-shaped steel column 3, thus providing a guarantee for secondary disassembly and reuse.

[0056] Please refer to Figure 7 With the two rows of insertion holes 8 symmetrically arranged on both sides of the middle plate of the H-shaped steel column 3, multiple anti-loosening pins 6 on the same side are inserted from the outside to the inside into the corresponding two first through holes 15 and one second through hole 16. This allows for simultaneous operation on both sides of the middle plate of the H-shaped steel column 3, avoiding interference on the other side due to force on one side, and ensuring installation accuracy.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An H-shaped steel end plate connection structure, comprising an H-shaped steel column (3), a precast steel beam component (1), and a connecting end plate (2), wherein the connecting end plate (2) is fixedly disposed on the side of the precast steel beam component (1) near the H-shaped steel column (3), characterized in that, A disassembly structure is provided between the H-shaped steel column (3) and the connecting end plate (2). The disassembly structure includes a plug hole (8), a plug block (7), and a limiting block. The plug hole (8) is opened on one side of the H-shaped steel column (3). The plug block (7) is located on the side of the connecting end plate (2) away from the precast steel member (1) of the steel beam. The plug block (7) passes through the plug hole (8). The limiting block is engaged with one end of the plug block (7) that protrudes from the plug hole (8) to restrict the plug block (7) from coming out of the plug hole (8). The upper end face of the plug-in block (7) is provided with an anti-detachment groove (9) on the side close to the connecting end plate (2), and a limit groove is provided in the middle of the lower end face of the limiting block. The limit groove and the anti-detachment groove (9) are vertically inserted and engaged. The limiting block includes a first insert (4) and a second insert (5) arranged sequentially from one side of the connecting end plate (2). A first limiting slot (10) is provided in the middle of the lower end face of the first insert (4), and a second limiting slot (11) is provided in the middle of the lower end face of the second insert (5). The first insert (4) and the second insert (5) are attached side by side, and the first limiting slot (10) and the second limiting slot (11) constitute the limiting slot.

2. The H-beam steel end plate connection structure as described in claim 1, characterized in that, The first insert (4) has a blocking block (12) on the upper part of the side near the connecting end plate (2). The blocking block (12) is inserted into the upper part of the insertion hole (8) to block the gap between the insertion hole (8) and the anti-disengagement groove (9).

3. The H-beam steel end plate connection structure as described in claim 1, characterized in that, The second plug (5) has connecting blocks (13) on the upper left and right sides of the side away from the connecting end plate (2), and an adapter groove (14) is provided between the two connecting blocks (13). The upper part of the plug (7) at the end away from the connecting end plate (2) is engaged in the adapter groove (14).

4. The H-beam steel end plate connection structure as described in claim 3, characterized in that, Both connecting blocks (13) are provided with a first through hole (15), and the upper part of the plug block (7) away from the connecting end plate (2) is provided with a second through hole (16). The two first through holes (15) and the second through hole (16) are coaxially arranged and are provided with anti-detachment pins (6).

5. An H-beam steel end plate connection structure as described in any one of claims 1-4, characterized in that, The number of the insertion holes (8) is multiple, and the multiple insertion holes (8) are opened in a matrix shape on one side of the H-shaped steel column (3). The number of insertion blocks (7) and the number of limiting blocks are multiple, and they are arranged one-to-one with the multiple insertion holes (8).

6. The H-beam steel end plate connection structure as described in claim 5, characterized in that, The plurality of the insertion holes (8) are arranged in two columns longitudinally, and the two columns of insertion holes (8) are respectively symmetrically arranged on both sides of the middle plate of the H-shaped steel column (3).

7. A method for connecting H-beam end plates, characterized in that, The H-beam steel end plate connection structure as described in any one of claims 4-6 includes the following steps: S1: Fix the connecting end plate (2) to the end of the precast steel member (1) of the steel beam, move the precast steel member (1) of the steel beam, and the plug block (7) on the connecting end plate (2) passes through the plug hole (8) on one side of the H-shaped steel column (3); S2: The first insert block (4) moves from top to bottom, so that the first limiting slot (10) of the first insert block (4) is vertically inserted into the bottom of the anti-disengagement slot (9) of the insert block (7), and the first insert block (4) moves to the side of the connecting end plate (2), so that the plug (12) of the first insert block (4) is inserted into the upper part of the insert hole (8); S3: The second insert (5) moves from top to bottom, so that the second limiting slot (11) of the second insert (5) is vertically inserted into the bottom of the anti-disengagement slot (9) of the insert block (7), and the anti-disengagement pin (6) is horizontally inserted into two first through holes (15) and one second through hole (16) in sequence.

8. The method for connecting H-beam steel end plates as described in claim 7, characterized in that, With two rows of insertion holes (8) symmetrically arranged on both sides of the middle plate of the H-shaped steel column (3), multiple anti-detachment pins (6) on the same side are inserted from the outside to the inside into the corresponding two first through holes (15) and one second through hole (16).

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