A prefabricated beam-column joint structure and manufacturing method

Abstract

This application relates to a prefabricated beam-column joint structure and manufacturing method, belonging to the field of building construction technology. A prefabricated beam-column joint structure includes a connecting portion for connecting to the end of a precast beam and a supporting portion for supporting the connecting portion. The supporting portion is used to connect to a precast column. The supporting portion is provided with an upwardly extending connecting column, and the connecting portion is provided with a connecting hole for inserting the connecting column. The connecting column is connected to a limiting block for abutting against the upper surface of the connecting portion. The connection of the connecting column with the connecting hole and the limiting block with the supporting portion allows the connection operation between the precast beam and the precast column to be completed in one step, reducing the possibility of secondary construction operations at the beam-column joint location, thereby further improving the convenience of the connection operation between the precast beam and the precast column.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of building construction, in particular to a fabricated beam-column joint structure and manufacturing method. BACKGROUND

[0002] In the building construction process, in order to shorten the construction period, a fabricated structure is usually used, that is, prefabricated walls, prefabricated floor slabs, prefabricated columns and prefabricated beams are assembled with each other to form corresponding building structures.

[0003] When the prefabricated beam and the prefabricated column are connected, the end wall of the prefabricated beam is first aligned with the side wall of the prefabricated column, and each reserved rib located on the end wall of the prefabricated beam is inserted into the position between the adjacent two reserved ribs located on the side wall of the prefabricated column. Then, the stirrups are bundled so that the stirrups connect the reserved ribs of the prefabricated beam and the reserved ribs of the prefabricated column. Then, the formwork is erected to enclose the stirrups, the reserved ribs of the prefabricated beam and the reserved ribs of the prefabricated column in the area surrounded by the formwork. Finally, the concrete slurry is poured into the area surrounded by the formwork to connect the prefabricated beam and the prefabricated column.

[0004] When the concrete slurry solidifies, the construction personnel need to climb to the beam-column joint position again and then perform secondary construction to remove the formwork, which is relatively cumbersome, and thus needs to be improved. SUMMARY

[0005] The application aims to provide a fabricated beam-column joint structure and manufacturing method to reduce the possibility of secondary construction operation on the beam-column joint, thereby improving the convenience of connecting the prefabricated beam and the prefabricated column.

[0006] In a first aspect, the application provides a fabricated beam-column joint structure using the following technical solution:

[0007] A fabricated beam-column joint structure includes a connecting part for connecting with the end of a prefabricated beam and a supporting part for supporting the connecting part, and the supporting part is used for connecting with a prefabricated column. The supporting part is provided with a connecting column extending upward, the connecting part is provided with a connecting hole for inserting the connecting column, and the connecting column is connected with a limiting block for abutting against the upper surface of the connecting part.

[0008] By adopting the technical scheme, the support part is connected with the prefabricated column, and the connecting part is connected with the prefabricated beam; when the prefabricated beam is connected with the prefabricated column, the prefabricated beam is first hoisted and the connecting hole is aligned with the connecting column; then the prefabricated beam is placed downward to insert the connecting column into the connecting hole; after the lower surface of the connecting part abuts against the upper surface of the support part, the limiting block is connected with the connecting column, which is simple and convenient to operate. The connecting column and the connecting hole are matched to limit the movement of the prefabricated beam along the radial direction of the connecting column; the limiting block and the support part are matched to limit the movement of the prefabricated beam in the upward and downward directions, so that the prefabricated beam is stably connected with the prefabricated column, and the connection operation of the prefabricated beam and the prefabricated column is completed at one time, which reduces the possibility of secondary construction operation on the beam-column joint position and is beneficial to further improving the convenience of the connection operation of the prefabricated beam and the prefabricated column.

[0009] Optionally, a gap is arranged between the inner side wall of the connecting hole and the peripheral wall of the connecting column; and the gap between the inner side wall of the connecting hole and the peripheral wall of the connecting column is filled with filling concrete.

[0010] By adopting the technical scheme, the gap is arranged between the inner side wall of the connecting hole and the peripheral wall of the connecting column, so that the connecting column is inserted into the connecting hole, thereby further improving the convenience of the connection operation of the prefabricated beam and the prefabricated column. The filling concrete in the slurry state has fluidity, so as to facilitate the filling concrete to be fully filled in the gap between the inner side wall of the connecting hole and the peripheral wall of the connecting column; after the filling concrete is solidified, it has high compression resistance, thereby further limiting the movement of the connecting part relative to the support part along the radial direction of the connecting column, and thereby being beneficial to further improving the stability of the connection between the prefabricated beam and the prefabricated column.

[0011] Optionally, a plugging plate is arranged between the limiting block and the connecting part, and the limiting block abuts against the connecting part through the plugging plate; the plugging plate is provided with a butt joint hole matched with the connecting column, and the plugging plate is used to plug the connecting hole.

[0012] By adopting the technical scheme, the lower surface of the plugging plate, the inner side wall of the connecting hole, the peripheral wall of the connecting column and the upper surface of the support part jointly form a closed area to limit the expansion of the filling concrete, thereby reducing the possibility of the filling concrete being broken and falling off from the connecting hole, and thereby improving the stability of the connection between the prefabricated beam and the prefabricated column.

[0013] Optionally, the limiting block is threadedly connected with the connecting column; the upper surface of the plugging plate is provided with a butt joint ring groove in the circumferential direction of the butt joint hole, the inner side wall of the butt joint ring groove is provided with an embedded groove communicated with the butt joint hole, the inner side wall of the embedded groove is slidably provided with an abutting block used to abut against the peripheral wall of the connecting column; the upper surface of the end of the abutting block away from the connecting column is obliquely provided with an abutting surface, the butt joint ring groove is embedded with an abutting ring used to abut against the abutting surface, and the abutting ring is connected with the limiting block.

[0014] By adopting the technical scheme, when the limiting block is installed, the abutment ring is abutted against the abutment surface to drive the abutment block to slide to the direction of the connecting column, so that the abutment block is abutted against the connecting column, the movement of the plugging plate in the up-down direction is further limited, and the stability of the fixed plugging plate is improved; meanwhile, when the abutment block is abutted against the connecting column, the abutment block has an upward reverse force on the abutment ring through the abutment surface, so that the side wall of the thread of the limiting block is abutted against the side wall of the thread of the connecting column, the possibility of rotation of the limiting block is reduced, and the stability of the fixed limiting block is improved.

[0015] Optionally, the connecting portion is provided with a receiving groove for embedding the plugging plate, and the upper end wall of the connecting column is located inside the receiving groove.

[0016] By adopting the technical scheme, the upper end wall of the connecting column is located inside the receiving groove, which is beneficial to improve the flatness of the upper surface of the precast beam, thereby facilitating subsequent operations such as precast wall or door and window installation, bricklaying and the like on the precast beam.

[0017] Optionally, the connecting portion is provided with a mounting hole penetrating in the radial direction of the connecting column, the inside of the mounting hole is communicated with the inside of the connecting hole, a limiting rod is inserted into the mounting hole, and the connecting column is provided with a limiting groove for inserting the limiting rod.

[0018] By adopting the technical scheme, the limiting rod cooperates with the limiting groove, the movement of the connecting portion relative to the supporting portion in the up-down direction is further limited, and the stability of the connection between the precast beam and the precast column is further improved.

[0019] Optionally, the two ends of the limiting rod are provided with clamping grooves, and clamping plates for abutting against the side wall of the connecting portion are inserted into the clamping grooves.

[0020] By adopting the technical scheme, the clamping plates located at the two ends of the limiting rod cooperate with each other to limit the movement of the limiting rod in the length direction of the limiting rod, thereby reducing the possibility of the limiting rod falling out of the mounting hole.

[0021] Optionally, the side wall of at least one of the clamping plates towards the connecting portion is provided with an elastic pad for abutting against the connecting portion.

[0022] By adopting the technical scheme, when the two clamping plates are both installed, the elastic pad is elastically deformed to abut the two clamping plates against the side wall of the corresponding side of the connecting portion, thereby reducing the possibility of the clamping plate and the inner wall of the clamping groove being separated. Meanwhile, during the installation of the clamping plate, the elastic pad is elastically deformed to facilitate the insertion of the clamping plate into the clamping groove.

[0023] Optionally, the connecting portion is provided with a positioning block extending downward, and the supporting portion is provided with a positioning groove for inserting and cooperating with the positioning block.

[0024] By adopting the technical scheme, the positioning block and the positioning groove are inserted and matched, which is beneficial to quickly align the connecting part and the supporting part, thereby reducing the operation of repeatedly adjusting the position of the precast beam, and further improving the convenience of the precast beam and the precast column connection operation.

[0025] In a first aspect, the application provides a manufacturing method of an assembled beam-column joint structure, which adopts the following technical scheme:

[0026] A manufacturing method of an assembled beam-column joint structure comprises the following steps:

[0027] Preparation: connecting the connecting part with the precast beam and connecting the supporting part with the precast column;

[0028] Hoisting the precast beam: after the precast column is installed, hoist the precast beam, so that the connecting part at each end of the precast beam is located directly above the corresponding supporting part;

[0029] Butt joint: place the precast beam downward, so that the lower surface of the connecting part abuts against the upper surface of the corresponding supporting part, and the connecting column is inserted into the corresponding connecting hole;

[0030] Fixing: install the limiting block so that the limiting block abuts against the upper surface of the connecting part.

[0031] By adopting the above technical scheme, the connecting part is connected with the precast beam in advance, and the supporting part is connected with the precast column; when the precast beam and the precast column are butt jointed, the connecting column is inserted into the corresponding connecting hole, and then the limiting block is connected with the connecting column, which is simple and convenient to operate.

[0032] In summary, the application includes at least one of the following beneficial technical effects:

[0033] 1. The connecting column and the connecting hole cooperate, and the limiting block and the supporting part cooperate, so that the connection operation of the precast beam and the precast column can be completed at one time, reducing the possibility of secondary construction operation on the beam-column joint position, thereby further improving the convenience of the precast beam and the precast column connection operation;

[0034] 2. The abutment ring and the abutment block cooperate, which can improve the stability of the fixed sealing plate, and at the same time can reduce the possibility of rotation of the limiting block, thereby improving the stability of the fixed limiting block;

[0035] 3. The limiting rod and the limiting groove cooperate, which can further limit the movement of the connecting part relative to the supporting part in the up-down direction, thereby further improving the stability of the connection between the precast beam and the precast column. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a schematic diagram of the overall structure of an embodiment of an assembled beam-column joint structure.

[0037] Figure 2 is an exploded view for showing the connection structure between the connecting part and the supporting part.

[0038] Figure 3 is an enlarged view of A part in Figure 2

[0039] Figure 4 is a sectional view for showing the fitting relationship between the limiting block and the abutting block.

[0040] Figure 5 is an enlarged view of B part in Figure 2

[0041] Figure 6 is an exploded view for showing the connection structure between the limiting rod and the connecting column.

[0042] In the figure, 1, connecting part; 11, connecting hole; 12, accommodating groove; 13, mounting hole; 131, limiting rod; 1311, clamping groove; 14, positioning block; 2, supporting part; 21, connecting column; 211, limiting block; 212, limiting plate; 2121, limiting groove; 22, positioning groove; 3, prefabricated beam; 4, prefabricated column; 5, plugging plate; 51, butt joint hole; 52, butt joint ring groove; 521, abutting ring; 5211, abutting ring surface; 53, embedded groove; 531, abutting block; 5311, abutting surface; 6, clamping plate; 61, elastic pad. DETAILED DESCRIPTION

[0043] The following will be described in detail in combination with the accompanying Figure 1 - the accompanying Figure 6 , the present application is further described in detail.

[0044] A prefabricated beam-column joint structure, referring to Figure 1 , comprising a connecting part 1 and a supporting part 2, both of which are block-shaped. The connecting part 1 is used for integrally pouring and forming connection with the end wall of the prefabricated beam 3, and the supporting part 2 is used for integrally pouring and forming connection with the side wall of the prefabricated column 4.

[0045] Referring to Figure 1 and Figure 2 ​​The support part 2 is provided with a connecting column 21, one end of the connecting column 21 is integrally connected with the support part 2, and the other end penetrates the upper surface of the support part 2 and extends upward. The connecting part 1 is integrally formed with a connecting hole 11 in the up-down direction; when the precast beam 3 is butted with the precast column 4, the connecting part 1 is located directly above the support part 2, and then the precast beam 3 is placed downward, so that the connecting column 21 is inserted into the corresponding connecting hole 11, thereby the support part 2 can support the connecting part 1. In the embodiment, the number of connecting columns 21 corresponding to each connecting hole 11 is multiple; in another embodiment, the number of connecting columns 21 corresponding to each connecting hole 11 can also be one.

[0046] Referring to Figure 2 , a gap is provided between the inner side wall of the connecting hole 11 and the peripheral wall of the corresponding connecting column 21; the connecting hole 11 is filled with a slurry state of filling concrete (not shown in the figure). The filling concrete can fill the gap between the inner side wall of the connecting hole 11 and the peripheral wall of the connecting column 21; after the filling concrete solidifies, the solidified filling concrete can limit the radial movement of the connecting part 1 along the connecting column 21, thereby improving the stability of the connection between the precast beam 3 and the precast column 4.

[0047] Referring to Figure 2 , the upper surface of the connecting part 1 is integrally formed with a receiving groove 12 along the circumference of the connecting hole 11, and the receiving groove 12 communicates with the connecting hole 11; in the embodiment, both ends of the receiving groove 12 along the width direction of the connecting part 1 are open. The connecting column 21 is provided with a limiting block 211 and a blocking plate 5. The upper surface of the blocking plate 5 is provided with a plurality of butt joints 51 penetratingly opened in the up-down direction; the butt joints 51 correspond to the connecting columns 21 one by one, and each connecting column 21 is inserted into the corresponding butt joint 51, and at the same time, the blocking plate 5 is embedded in the receiving groove 12 to block the connecting hole 11, thereby covering the filling concrete inside. In the embodiment, the thickness of the blocking plate 5 is less than the depth of the receiving groove 12, and the upper end wall of the connecting column 21 is located inside the receiving groove 12.

[0048] Referring to Figure 2 , the limiting block 211 is located above the blocking plate 5, and the limiting block 211 is threadedly connected with the peripheral wall of the connecting column 21; by rotating the limiting block 211, the limiting block 211 can abut against the upper surface of the blocking plate 5, so that the blocking plate 5 abuts against the connecting part 1, thereby limiting the upward movement of the connecting part 1 relative to the support part 2. In another embodiment, the limiting block 211 can also be welded with the connecting column 21.

[0049] Referring to Figure 3The upper surface of the plugging plate 5 at the position of each butt joint hole 51 is provided with a butt joint ring groove 52, which is in a closed ring shape along the circumference of the corresponding butt joint hole 51. The inner side wall of the butt joint ring groove 52 near the butt joint hole 51 is provided with an embedding groove 53, and the inner side wall of the embedding groove 53 is connected with the upper surface of the plugging plate 5. The embedding groove 53 is provided along the radial direction of the corresponding butt joint hole 51, and the embedding groove 53 is communicated with the corresponding butt joint hole 51. The embedding groove 53 is embedded with an abutting block 531, and the upper surface of the abutting block 531 is flush with the upper surface of the plugging plate 5. The side wall of the abutting block 531 is fitted with the inner side wall of the embedding groove 53, and the abutting block 531 can slide along the inner side wall of the embedding groove 53 to the direction of the butt joint hole 51. In another embodiment, when the abutting block 531 is placed in the embedding groove 53, the upper surface of the abutting block 531 can also be lower than the upper surface of the plugging plate 5.

[0050] Referring to Figure 3 and Figure 4 The size of the abutting block 531 along the length direction of the embedding groove 53 is greater than the length of the embedding groove 53. When the abutting block 531 abuts with the circumferential wall of the connecting column 21, the end of the abutting block 531 away from the connecting column 21 is located in the butt joint ring groove 52. The upper surface of the end of the abutting block 531 located in the butt joint ring groove 52 is provided with an abutting surface 5311, which is inclined and connected with the end wall of the end of the abutting block 531 away from the butt joint hole 51. The butt joint ring groove 52 is provided with an abutting ring 521, and the lower end wall of the abutting ring 521 is provided with a fitted ring surface 5211 along the circumference of the abutting ring 521. The fitted ring surface 5211 is fitted with the abutting surface 5311. The length of the abutting ring 521 is less than the depth of the butt joint ring groove 52, and the upper end wall of the abutting ring is welded and fixed with the lower surface of the limiting block 211. When the limiting block 211 is rotated and moves downward, the abutting ring 521 can drive the abutting block 531 to move to the direction of the connecting column 21, so that the abutting block 531 abuts with the circumferential wall of the connecting column 21, thereby further improving the stability of the connection between the plugging plate 5 and the connecting column 21.

[0051] Referring to Figure 5 and Figure 6The circumferential wall of the connecting column 21 is welded and fixed with two limiting plates 212; the two limiting plates 212 are sequentially arranged in the up-down direction; the two limiting plates 212 are aligned with each other, and the corresponding two limiting plates 212 are matched with each other to form a limiting groove 2121. The limiting plate 212 is located in the connecting hole 11, and the limiting plate 212 is located on the side of the connecting column 21 away from the prefabricated column 4. The side wall of one side of the connecting part 1 along the width direction of the connecting part 1 is integrally formed with a mounting hole 13, the mounting hole 13 is aligned with the limiting groove 2121, and the inner side wall of the mounting hole 13 is connected with the side wall of the other side of the connecting part 1. The limiting rod 131 is inserted into the limiting groove 2121, so as to further limit the upward movement of the connecting part 1. In another embodiment, the limiting groove 2121 can also be directly formed on the circumferential wall of the connecting column 21 along the width direction of the connecting part 1.

[0052] Referring to Figure 5 The two ends of the limiting rod 131 are located outside the mounting hole 13, and the upper surfaces of the two ends of the limiting rod 131 are downwardly provided with clamping grooves 1311; the clamping grooves 1311 are inserted with clamping plates 6, and the side wall of each clamping plate 6 towards the connecting part 1 direction is adhesively fixed with an elastic pad 61. The elastic pad 61 comprises a rubber pad; the elastic pad 61 is tightly abutted with the side wall of the connecting part 1, and the elastic pad 61 is elastically deformed, so that the clamping plate 6 is tightly abutted with the inner side wall of the clamping groove 1311. In another embodiment, only one of the clamping plates 6 can be provided with an elastic pad 61.

[0053] Referring to Figure 6 The lower surface of the connecting part 1 is integrally formed with a positioning block 14; the upper surface of the supporting part 2 is integrally formed with a positioning groove 22. The positioning block 14 and the positioning groove 22 are inserted and matched, so as to automatically align the mounting hole 13 with the limiting groove 2121.

[0054] The embodiment also discloses a manufacturing method of the assembled beam-column joint structure, comprising the following steps:

[0055] S1, prefabrication: integrally pouring and forming the connecting part 1 with the end wall of the prefabricated beam 3, and integrally pouring and forming the supporting part 2 with the side wall of the prefabricated column 4;

[0056] S2, hoisting the prefabricated beam 3: after the prefabricated column 4 is installed, the prefabricated beam 3 is hoisted to the position between the two corresponding prefabricated columns 4, and the connecting part 1 at each end of the prefabricated beam 3 is located above the corresponding supporting part 2;

[0057] S3, butt joint: placing the prefabricated beam 3 downwardly, inserting the positioning block 14 into the corresponding positioning groove 22, and continuing to place the prefabricated beam 3 downwardly until the lower surface of the connecting part 1 is abutted with the upper surface of the supporting part 2; at this time, the connecting column 21 is inserted into the corresponding connecting hole 11;

[0058] S4, fixing:

[0059] S41, one end of the limiting rod 131 is inserted into one end of the mounting hole 13, and the corresponding end of the limiting rod 131 is sequentially inserted through the corresponding limiting groove 2121 and the other end of the mounting hole 13;

[0060] S42, the clamping plate 6 is inserted into the clamping groove 1311, so that the elastic pad 61 is tightly abutted against the side wall of the connecting part 1, thereby fixing the limiting rod 131;

[0061] S43, the concrete slurry is poured into the connecting hole 11, and the concrete slurry is vibrated, so that the concrete slurry is fully filled in the connecting hole 11, to form the filled concrete; the upper surface of the filled concrete is flush with the bottom wall of the accommodating groove 12;

[0062] S44, the sealing plate 5 is installed, and the sealing plate 5 is embedded in the accommodating groove 12;

[0063] S45, the abutting block 531 is installed, and the abutting block 531 is embedded in the embedding groove 53;

[0064] S46, the limiting block 211 is screwed, so that the abutting ring 521 is embedded in the abutting ring 521 groove; then the limiting block 211 is tightened.

[0065] S5, leveling: the mortar is filled into the connecting hole 11 and the accommodating groove 12, so that the upper surface of the connecting part 1 is flat.

[0066] The connecting hole 11 cooperates with the connecting column 21 to limit the movement of the prefabricated beam 3 relative to the prefabricated column 4 along the radial direction of the connecting column 21; the supporting part 2 cooperates with the limiting block 211 to limit the movement of the prefabricated beam 3 relative to the prefabricated column 4 along the up-down direction, so that the prefabricated beam 3 and the prefabricated column 4 are stably connected at one time, the operation of secondary construction of the beam-column joint is reduced, and the stability of the connection between the prefabricated beam 3 and the prefabricated column 4 is improved.

[0067] The embodiments of the specific embodiments are the preferred embodiments of the application, not limited to the protection scope of the application, wherein the same parts are indicated by the same reference numerals. Therefore: any equivalent changes made according to the structure, shape, principle of the application should be covered in the protection scope of the application.

Claims

1. A fabricated beam-column joint construction, characterized by: The utility model provides a connecting part (1) for connecting with the end of prefabricated beam (3) and support part (2) for supporting connecting part (1), the support part (2) is used for connecting with prefabricated column (4), the support part (2) is provided with the connecting column (21) extending upwards, the connecting part (1) is provided with the connecting hole (11) for the insertion of connecting column (21), the connecting column (21) is connected with the limiting block (211) for abutting with the upper surface of connecting part (1), The inner side wall of the connecting hole (11) and the peripheral wall of the connecting column (21) are provided with a space, and the space between the inner side wall of the connecting hole (11) and the peripheral wall of the connecting column (21) is filled with filling concrete. The position between the limiting block (211) and the connecting part (1) is provided with a sealing plate (5), the limiting block (211) abuts with the connecting part (1) through the sealing plate (5), the sealing plate (5) is provided with a butt joint hole (51) matched with the connecting column (21), and the sealing plate (5) is used for sealing the connecting hole (11). The limiting block (211) is threadedly connected with the connecting column (21), the upper surface of the sealing plate (5) is provided with a butt joint ring groove (52) along the circumference of the butt joint hole (51), the inner side wall of the butt joint ring groove (52) is provided with an embedded groove (53) communicated with the butt joint hole (51), the inner side wall of the embedded groove (53) is slidably provided with an abutting block (531) for abutting with the peripheral wall of the connecting column (21), the upper surface of the end of the abutting block (531) away from the connecting column (21) is obliquely provided with an abutting surface (5311), the butt joint ring groove (52) is embedded with an abutting ring (521) for abutting with the abutting surface (5311), and the abutting ring (521) is connected with the limiting block (211).

2. The fabricated beam-column joint construction of claim 1, wherein: The connecting part (1) is provided with a containing groove (12) for embedding the sealing plate (5), and the upper end wall of the connecting column (21) is located inside the containing groove (12).

3. The fabricated beam-column joint construction of claim 1, wherein: The connecting part (1) is provided with a mounting hole (13) penetrating along the radial direction of the connecting column (21), the inside of the mounting hole (13) is communicated with the inside of the connecting hole (11), a limiting rod (131) is embedded in the mounting hole (13), and the connecting column (21) is provided with a limiting groove (2121) for embedding the limiting rod (131).

4. The fabricated beam-column joint construction of claim 3, wherein: Both ends of the limiting rod (131) are provided with clamping grooves (1311), and a clamping plate (6) for abutting with the side wall of the connecting part (1) is inserted into the clamping grooves (1311).

5. The fabricated beam-column joint construction of claim 4, wherein: The side wall of at least one clamping plate (6) facing the connecting part (1) is provided with an elastic pad (61) for abutting with the connecting part (1).

6. The fabricated beam-column joint construction of claim 1, wherein: The connecting part (1) is provided with a positioning block (14) extending downward, and the support part (2) is provided with a positioning groove (22) matched with the positioning block (14).

7. A method of manufacturing a fabricated beam-column joint construction according to any one of claims 1 to 6, characterized by: The utility model provides a connecting part (1) for connecting with the end of prefabricated beam (3) and support part (2) for supporting connecting part (1), the support part (2) is used for connecting with prefabricated column (4), the support part (2) is provided with the connecting column (21) extending upwards, the connecting part (1) is provided with the connecting hole (11) for the insertion of connecting column (21), the connecting column (21) is connected with the limiting block (211) for abutting with the upper surface of connecting part (1), The utility model provides a connecting part (1) for connecting with the end of prefabricated beam (3) and support part (2) for supporting connecting part (1), the support part (2) is used for connecting with prefabricated column (4), the support part (2) is provided with the connecting column (21) extending upwards, the connecting part (1) is provided with the connecting hole (11) for the insertion of connecting column (21), the connecting column (21) is connected with the limiting block (211) for abutting with the upper surface of connecting part (1), Hoisting the prefabricated beam (3) : after the installation of the prefabricated column (4) is completed, hoist the prefabricated beam (3), so that the connecting part (1) at each end of the prefabricated beam (3) is located directly above the corresponding support part (2) ; Butt joint: place the prefabricated beam (3) downward, so that the lower surface of the connecting part (1) abuts against the upper surface of the corresponding support part (2), and the connecting column (21) is inserted into the corresponding connecting hole (11) ; Fix: install the limiting block (211), so that the limiting block (211) abuts against the upper surface of the connecting part (1).

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