Fabricated building laminated slab abutted seam structure and construction method thereof

Abstract

In order to solve the problem of poor connection performance of an existing laminated slab abutted seam structure, the invention provides a fabricated building laminated slab abutted seam structure which comprises a first laminated slab, the first laminated plate and the second laminated plate are arranged in parallel at an interval in parallel at the position where the first laminated plate and the second laminated plate need to be arranged; and the connecting structure can be used for quickly and firmly connecting the first laminated slab and the second laminated slab together, and is fixedly arranged on the upper sides of the first laminated slab and the second laminated slab in a covering manner. The overall design is reasonable, the structure is simple, operation is convenient, the firmness performance between the laminated slabs is improved, the overall stability performance is improved, other procedures can be operated without waiting for concrete condensation, efficiency is high, the splicing speed is high, the project progress is accelerated, installation construction operation is easy and convenient, and the construction period is shortened. The mode of mixing the concrete and the connecting pieces is adopted, the firmness performance between abutted seams is improved, and the stability is higher.

Description

Technical Field

[0001] The invention belongs to the technical field of joint connection of assembled building composite panels, and in particular relates to a joint structure of assembled building composite panels and a construction method thereof. Background Art

[0002] Composite floor is an assembled integral floor made of prefabricated panels and cast-in-place reinforced concrete layers. Composite floor has good integrity, the upper and lower surfaces of the board are flat, and it is easy to decorate the finishing layer. It is suitable for high-rise buildings and large-span buildings that require high overall rigidity.

[0003] Currently, most of the existing composite slab joint structures are made of concrete pouring, which not only has a relatively simple function, but also has poor connection performance between the two composite slabs, making it difficult to effectively connect the two composite slabs to each other, and the overall stability performance between the composite slabs is relatively poor.

[0004] In addition, the composite slab joint structure made by pouring concrete requires a lot of time to wait for the concrete to solidify, and its overall efficiency is low and the construction speed is slow, which seriously affects the progress of the project.

[0005] Furthermore, although there are a few connections on the market that use connectors, most of the connection methods have a single structure and poor connection firmness, making it difficult to effectively increase the connection firmness between the composite plates, which brings great inconvenience to the jointing work between the composite plates. Summary of the invention

[0006] In order to improve the connection performance between two composite panels, the present invention provides a prefabricated building composite panel joint structure and a construction method thereof.

[0007] The technical solution of a prefabricated building composite panel joint structure of the present invention is as follows:

[0008] An assembled building composite panel joint structure, characterized in that it comprises

[0009] a first laminated plate;

[0010] a second superimposed plate, wherein the first superimposed plate and the second superimposed plate are arranged in parallel and spaced apart from each other at a position where the first superimposed plate and the second superimposed plate are required to be arranged;

[0011] A connecting structure capable of quickly and firmly connecting a first superimposed plate and a second superimposed plate together, wherein the connecting structure is covered and fixed on the upper sides of the first superimposed plate and the second superimposed plate.

[0012] Furthermore, the connection structure includes

[0013] A first connecting plate capable of effectively and quickly fixing the first superimposed plate, wherein the first connecting plate cover is fixed on the upper side of the first superimposed plate;

[0014] A second connecting plate capable of effectively and quickly fixing the second superimposed plate, wherein the second connecting plate cover is fixed on the upper side of the second superimposed plate;

[0015] A U-shaped steel plate capable of effectively and fixedly connecting a first connecting plate and a second connecting plate, wherein the U-shaped steel plate is arranged between the first connecting plate and the second connecting plate and covers the joint seam between the first superimposed plate and the second superimposed plate.

[0016] Furthermore, a first connecting plate U-shaped groove is provided in the middle of the first connecting plate along its width direction, a first composite plate U-shaped groove matching the first connecting plate U-shaped groove is provided in the middle of the first composite plate along its width direction, a plurality of first through holes are symmetrically provided on the first composite plate and located on both sides of the first composite plate U-shaped groove, the plurality of first through holes are spaced apart along the width direction of the first composite plate, first connecting plate U-shaped groove through holes corresponding to the first through holes are provided on both sides of the first connecting plate U-shaped groove, a first steel bar is passed through the first through hole and the first connecting plate U-shaped groove through hole on the same straight line; at the bottom of the first connecting plate U-shaped groove and located at the First insertion holes are symmetrically provided on both sides of a steel bar, a first bottom hole corresponding to the first insertion hole is provided at the bottom of the U-shaped groove of the first composite plate, a first U-shaped steel bar is inserted in the first insertion holes on both sides of the first steel bar, and both ends of the first U-shaped steel bar are sequentially inserted into the first bottom holes through the first insertion holes; two first threaded holes are provided on the first connecting plate and between adjacent first steel bars, the two first threaded holes are symmetrically distributed on both sides of the U-shaped groove of the first connecting plate, a first threaded sleeve corresponding to the first threaded hole is provided on the first composite plate, a first threaded rod is provided in the first threaded hole, and the lower end of the first threaded rod passes through the first threaded hole and cooperates with the first threaded sleeve.

[0017] Furthermore, a second connecting plate U-shaped groove is provided in the middle of the second connecting plate along its width direction, a second composite plate U-shaped groove matching the second connecting plate U-shaped groove is provided in the middle of the second composite plate along its width direction, a plurality of second through holes are symmetrically provided on the second composite plate and located on both sides of the second composite plate U-shaped groove, the plurality of second through holes are spaced apart along the width direction of the second composite plate, second connecting plate U-shaped groove through holes corresponding to the second through holes are provided on both sides of the second connecting plate U-shaped groove, a second steel bar is passed through the second through hole and the second connecting plate U-shaped groove through hole on the same straight line; at the bottom of the second connecting plate U-shaped groove and located at the Second insertion holes are symmetrically provided on both sides of the two steel bars, a second bottom hole corresponding to the second insertion hole is provided at the bottom of the U-shaped groove of the second composite plate, second U-shaped steel bars are inserted in the second insertion holes on both sides of the second steel bars, and both ends of the second U-shaped steel bars are sequentially inserted into the second bottom holes through the second insertion holes; two second threaded holes are provided on the second connecting plate and between adjacent second steel bars, and the two second threaded holes are symmetrically distributed on both sides of the U-shaped groove of the second connecting plate, a second threaded sleeve corresponding to the second threaded hole is provided on the second composite plate, a second threaded rod is provided in the second threaded hole, and the lower end of the second threaded rod passes through the second threaded hole and cooperates with the second threaded sleeve.

[0018] Furthermore, the U-shaped steel plate is arranged between the first connecting plate and the second connecting plate, and one side is welded to the first connecting plate, and the other side is welded to the second connecting plate, and a first U-shaped steel plate through hole corresponding to the multiple first through holes is provided on the side of the U-shaped steel plate close to the first connecting plate, and one end of the first steel bar passes through the first through hole and the first U-shaped steel plate through hole in sequence and then freely extends to the upper position of the middle part of the U-shaped steel plate; a second U-shaped steel plate through hole corresponding to the multiple second through holes is provided on the side of the U-shaped steel plate close to the second connecting plate, and one end of the second steel bar passes through the second through hole and the second U-shaped steel plate through hole in sequence and then freely extends to the upper position of the middle part of the U-shaped steel plate.

[0019] The present invention also provides a construction method for a prefabricated building composite panel joint structure, which is characterized by comprising the following steps:

[0020] Step 1: First, a first U-shaped groove of the first laminated plate is opened at the middle position of the top of the first laminated plate along its width direction, and then a second U-shaped groove of the second laminated plate is opened at the middle position of the top of the second laminated plate along its width direction;

[0021] The second step: a first bottom hole is formed at the bottom of the U-shaped groove of the first laminated plate, and a second bottom hole is formed at the bottom of the U-shaped groove of the second laminated plate; the third step: a first through hole is drilled on the first laminated plate, and a second through hole is drilled on the second laminated plate;

[0022] Step 4: Drill first threaded sleeve fixing holes and second threaded sleeve fixing holes on both sides of the top of the first laminated plate and the second laminated plate, then insert the first threaded sleeve and the second threaded sleeve into the first threaded sleeve fixing holes and the second threaded sleeve fixing holes, and pour cement to fix them inside the first laminated plate and the second laminated plate;

[0023] Step 5: insert the bottom steel plate of the U-shaped groove of the first connecting plate on the first connecting plate into the U-shaped groove of the first composite plate, and then pass the first steel bar through the first through hole, the through hole of the U-shaped groove of the first connecting plate and the through hole of the first U-shaped steel plate and then freely extend to the upper position of the middle part of the U-shaped steel plate, and then use the two ends of the first U-shaped steel bar to pass through the first insertion hole in sequence and insert into the first bottom hole, and finally rotate the first threaded rod to pass through the first threaded hole and match with the first threaded sleeve to be fixedly connected;

[0024] Step 6: While performing the fifth step, insert the bottom steel plate of the second connecting plate U-shaped groove on the second connecting plate into the U-shaped groove of the second composite plate, and then pass the second steel bar through the second through hole, the through hole of the U-shaped groove of the second connecting plate and the through hole of the second U-shaped steel plate to freely extend to the upper position of the middle part of the U-shaped steel plate, and then use the two ends of the second U-shaped steel bar to pass through the second insertion hole in sequence and insert into the second bottom hole, and finally rotate the second threaded rod to pass through the second threaded hole and match with the second threaded sleeve to be fixedly connected;

[0025] Step 7: Then pour concrete into the U-shaped groove of the first connecting plate, the U-shaped groove of the second connecting plate and the U-shaped steel plate, so that the concrete fixes the first steel bar, the second steel bar, the first U-shaped steel bar and the second U-shaped steel bar, thereby fixing the first connecting plate and the second connecting plate to the second composite plate and the first composite plate.

[0026] The present invention discloses an assembled building composite panel joint structure and a construction method thereof. The composite panel joint structure has a reasonable overall design, a simple structure, and is easy to operate. It not only increases the firmness between each composite panel, but also increases the overall stability. Other procedures can be operated without waiting for the concrete to solidify. The efficiency is high, the splicing speed is fast, and the project progress is improved. The installation and construction operations are simple and convenient. The mixed method of concrete and connectors is adopted to improve the firmness between the joints, and will not affect the disassembly. The structure is stronger and more stable than a single connector on the market. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a prefabricated building composite panel joint structure of the present invention.

[0028] Figure 2 It is a structural schematic diagram of a first connecting plate of a prefabricated building composite panel joint structure of the present invention.

[0029] Figure 3It is a structural schematic diagram of a second connecting plate of a prefabricated building composite plate joint structure of the present invention.

[0030] Figure 4 It is a structural schematic diagram of a U-shaped steel plate of a joint structure of an assembled building composite plate of the present invention.

[0031] Figure 5 It is a schematic diagram of a prefabricated building composite panel joint structure after pouring concrete according to the present invention. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the drawings are all in very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0033] Example 1

[0034] refer to Figures 1 to 5 In this embodiment, a prefabricated building composite panel joint structure includes a first composite panel 100, a second composite panel 200 and a connection structure 300.

[0035] The first superimposed plate 100 and the second superimposed plate 200 are arranged in parallel and spaced apart at the position where the first superimposed plate 100 and the second superimposed plate 200 are needed to be arranged. The connecting structure 300 can quickly and firmly connect the first superimposed plate 100 and the second superimposed plate 200 together. The connecting structure 300 is covered and fixed on the upper side of the first superimposed plate 100 and the second superimposed plate 200.

[0036] The connecting structure 300 includes a first connecting plate 310, a second connecting plate 320 and a U-shaped steel plate 330. The first connecting plate 310 can effectively and quickly fix the first composite plate 100. The first connecting plate 310 is covered and fixed on the upper side of the first composite plate 100. The second connecting plate 320 can effectively and quickly fix the second composite plate 200. The second connecting plate 320 is covered and fixed on the upper side of the second composite plate 200.

[0037] The U-shaped steel plate 330 can effectively fix the first connecting plate 310 and the second connecting plate 320 . The U-shaped steel plate 330 is disposed between the first connecting plate 310 and the second connecting plate 320 and covers the joint between the first composite plate 100 and the second composite plate 200 .

[0038] A first connecting plate U-shaped groove 311 is provided in the middle of the first connecting plate 310 along its width direction, and a first superimposed plate U-shaped groove matching the first connecting plate U-shaped groove 311 is provided in the middle of the first superimposed plate 310 along its width direction, and a plurality of first through holes are symmetrically provided on the first superimposed plate 310 and located on both sides of the first superimposed plate U-shaped groove, and the plurality of first through holes are spaced apart along the width direction of the first superimposed plate 100.

[0039] First connecting plate U-shaped groove through holes 317 corresponding to the first through holes are opened on both sides of the first connecting plate U-shaped groove 311 , and a first steel bar 312 is passed through the first through hole and the first connecting plate U-shaped groove through hole 317 on the same straight line.

[0040] First insertion holes 315 are symmetrically provided at the bottom of the U-shaped groove 311 of the first connecting plate and on both sides of the first steel bar 312. A first bottom hole corresponding to the first insertion hole 315 is provided at the bottom of the U-shaped groove of the first composite plate. First U-shaped steel bars 313 are inserted into the first insertion holes on both sides of the first steel bar 312. Both ends of the first U-shaped steel bar 313 pass through the first insertion holes 315 in sequence and are inserted into the first bottom holes.

[0041] Two first threaded holes 316 are provided on the first connecting plate 310 and between adjacent first steel bars 312. The two first threaded holes 316 are symmetrically distributed on both sides of the U-shaped groove 311 of the first connecting plate. A first threaded sleeve corresponding to the first threaded hole is provided on the first composite plate 100. A first threaded rod 314 is provided in the first threaded hole 316. The lower end of the first threaded rod 314 passes through the first threaded hole 316 and cooperates with the first threaded sleeve.

[0042] A second connecting plate U-shaped groove 321 is provided in the middle of the second connecting plate 320 along its width direction, and a second superimposed plate U-shaped groove matching the second connecting plate U-shaped groove 321 is provided in the middle of the second superimposed plate 200 along its width direction, and a plurality of second through holes are symmetrically provided on the second superimposed plate 200 and located on both sides of the second superimposed plate U-shaped groove, and the plurality of second through holes are spaced apart along the width direction of the second superimposed plate 200.

[0043] Second connecting plate U-shaped groove through holes 327 corresponding to the second through holes are opened on both sides of the second connecting plate U-shaped groove 321 , and a second steel bar 322 is passed through the second through hole and the second connecting plate U-shaped groove through hole 327 on the same straight line.

[0044] Second insertion holes 325 are symmetrically provided at the bottom of the U-shaped groove 321 of the second connecting plate and on both sides of the second steel bar 322. A second bottom hole corresponding to the second insertion hole 325 is provided at the bottom of the U-shaped groove of the second composite plate. Second U-shaped steel bars 323 are inserted into the second insertion holes 325 on both sides of the second steel bar 322. Both ends of the second U-shaped steel bar 323 pass through the second insertion holes 325 in sequence and are inserted into the second bottom holes.

[0045] Two second threaded holes 326 are provided on the second connecting plate 320 and between adjacent second steel bars 322. The two second threaded holes 326 are symmetrically distributed on both sides of the U-shaped groove 321 of the second connecting plate. A second threaded sleeve corresponding to the second threaded hole 326 is provided on the second composite plate. A second threaded rod 324 is provided in the second threaded hole 326. The lower end of the second threaded rod 324 passes through the second threaded hole 326 and cooperates with the second threaded sleeve.

[0046] As a preferred embodiment, the U-shaped steel plate 330 is arranged between the first connecting plate 310 and the second connecting plate 320, and one side is welded to the first connecting plate 310, and the other side is welded to the second connecting plate 320. A first U-shaped steel plate through hole 331 corresponding to the multiple first through holes is provided on the side of the U-shaped steel plate 330 close to the first connecting plate 310, and one end of the first steel bar 312 passes through the first through hole 317 and the first U-shaped steel plate through hole 331 in sequence and then freely extends to the upper position of the middle part of the U-shaped steel plate 330.

[0047] On one side of the U-shaped steel plate 330 close to the second connecting plate 320, a second U-shaped steel plate through hole 332 corresponding one to one with the plurality of second through holes 327 is provided, and one end of the second steel bar 322 passes through the second through hole 327 and the second U-shaped steel plate through hole 332 in sequence and then freely extends to the upper side position of the middle part of the U-shaped steel plate 330.

[0048] Example 2

[0049] This embodiment provides a construction method of a prefabricated building composite panel joint structure as described in Embodiment 1, characterized in that it comprises the following steps:

[0050] Step 1: First, a first U-shaped groove of the first laminated plate is opened at the middle position of the top of the first laminated plate along its width direction, and then a second U-shaped groove of the second laminated plate is opened at the middle position of the top of the second laminated plate along its width direction;

[0051] The second step: a first bottom hole is formed at the bottom of the U-shaped groove of the first laminated plate, and a second bottom hole is formed at the bottom of the U-shaped groove of the second laminated plate; the third step: a first through hole is drilled on the first laminated plate, and a second through hole is drilled on the second laminated plate;

[0052] Step 4: Drill first threaded sleeve fixing holes and second threaded sleeve fixing holes on both sides of the top of the first laminated plate and the second laminated plate, then insert the first threaded sleeve and the second threaded sleeve into the first threaded sleeve fixing holes and the second threaded sleeve fixing holes, and pour cement to fix them inside the first laminated plate and the second laminated plate;

[0053] Step 5: insert the bottom steel plate of the U-shaped groove of the first connecting plate on the first connecting plate into the U-shaped groove of the first composite plate, and then pass the first steel bar through the first through hole, the through hole of the U-shaped groove of the first connecting plate and the through hole of the first U-shaped steel plate and then freely extend to the upper position of the middle part of the U-shaped steel plate, and then use the two ends of the first U-shaped steel bar to pass through the first insertion hole in sequence and insert into the first bottom hole, and finally rotate the first threaded rod to pass through the first threaded hole and match with the first threaded sleeve to be fixedly connected;

[0054] Step 6: While performing the fifth step, insert the bottom steel plate of the second connecting plate U-shaped groove on the second connecting plate into the U-shaped groove of the second composite plate, and then pass the second steel bar through the second through hole, the through hole of the U-shaped groove of the second connecting plate and the through hole of the second U-shaped steel plate to freely extend to the upper position of the middle part of the U-shaped steel plate, and then use the two ends of the second U-shaped steel bar to pass through the second insertion hole in sequence and insert into the second bottom hole, and finally rotate the second threaded rod to pass through the second threaded hole and match with the second threaded sleeve to be fixedly connected;

[0055] Step 7: Then pour concrete into the U-shaped groove of the first connecting plate, the U-shaped groove of the second connecting plate and the U-shaped steel plate, so that the concrete fixes the first steel bar, the second steel bar, the first U-shaped steel bar and the second U-shaped steel bar, thereby fixing the first connecting plate and the second connecting plate to the second composite plate and the first composite plate.

[0056] The present embodiment provides a prefabricated building composite panel joint structure and a construction method thereof. The composite panel joint structure has a reasonable overall design, a simple structure, and is easy to operate. It not only increases the firmness between each composite panel, but also increases the overall stability. Other procedures can be performed without waiting for the concrete to solidify. It has high efficiency and a fast splicing speed, which improves the progress of the project. The installation and construction operations are simple and convenient. A mixture of concrete and connectors is used to improve the firmness between the joints, which will not affect disassembly. It is stronger and more stable than a single connector on the market.

[0057] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A prefabricated building composite panel joint structure, characterized in that: include A first laminated plate (100); a second laminated plate (200), wherein the first laminated plate (100) and the second laminated plate (200) are arranged in parallel and spaced apart from each other at a position where the first laminated plate (100) and the second laminated plate (200) need to be arranged; A connection structure (300) capable of quickly and firmly connecting a first laminated plate (100) and a second laminated plate (200), wherein the connection structure (300) is covered and fixed on the upper sides of the first laminated plate (100) and the second laminated plate (200).

2. The assembled building composite panel joint structure according to claim 1, characterized in that: The connection structure (300) comprises A first connecting plate (310) capable of effectively and quickly fixing the first superimposed plate (100), wherein the first connecting plate (310) is covered and fixed on the upper side of the first superimposed plate (100); A second connecting plate (320) capable of effectively and quickly fixing the second superimposed plate (200), wherein the second connecting plate (320) is covered and fixed on the upper side of the second superimposed plate (200); A U-shaped steel plate (330) capable of effectively fixing a first connecting plate (310) and a second connecting plate (320), wherein the U-shaped steel plate (330) is arranged between the first connecting plate (310) and the second connecting plate (320) and covers the joint between the first superimposed plate (100) and the second superimposed plate (200).

3. The assembled building composite panel joint structure according to claim 2, characterized in that: A first connecting plate U-shaped groove (311) is provided in the middle of the first connecting plate (310) along its width direction, a first composite plate U-shaped groove matching the first connecting plate U-shaped groove (311) is provided in the middle of the first composite plate (100) along its width direction, a plurality of first through holes are symmetrically provided on the first composite plate (100) and located on both sides of the first composite plate U-shaped groove, the plurality of first through holes are spaced apart along the width direction of the first composite plate (100), first connecting plate U-shaped groove through holes (317) corresponding to the first through holes are provided on both sides of the first connecting plate U-shaped groove (311), a first steel bar (312) is inserted into the first through hole and the first connecting plate U-shaped groove through hole (317) on the same straight line; first insertion holes (315) are symmetrically provided at the bottom of the first connecting plate U-shaped groove (311) and located on both sides of the first steel bar (312). ), a first bottom hole corresponding to the first insertion hole (315) is provided at the bottom of the U-shaped groove (311) of the first composite plate, a first U-shaped steel bar (313) is inserted into the first insertion hole (315) on both sides of the first steel bar (312), and both ends of the first U-shaped steel bar (313) pass through the first insertion hole (315) in sequence and are inserted into the first bottom hole; two first threaded holes (316) are provided on the first connecting plate (310) and between adjacent first steel bars (312), the two first threaded holes (316) are symmetrically distributed on both sides of the U-shaped groove (311) of the first connecting plate, a first threaded sleeve corresponding to the first threaded hole (316) is provided on the first composite plate (100), a first threaded rod (314) is provided in the first threaded hole (316), and the lower end of the first threaded rod (314) passes through the first threaded hole (316) and cooperates with the first threaded sleeve.

4. The assembled building composite panel joint structure according to claim 3, characterized in that: A second connecting plate U-shaped groove (321) is provided in the middle of the second connecting plate (320) along its width direction, a second composite plate U-shaped groove matching the second connecting plate U-shaped groove (321) is provided in the middle of the second composite plate (200) along its width direction, a plurality of second through holes are symmetrically provided on the second composite plate (200) and located on both sides of the second composite plate U-shaped groove, the plurality of second through holes are spaced apart along the width direction of the second composite plate (200), second connecting plate U-shaped groove through holes (327) corresponding to the second through holes (327) are provided on both sides of the second connecting plate U-shaped groove (321), a second steel bar (322) is inserted into the second through hole and the second connecting plate U-shaped groove through hole (327) on the same straight line; second insertion holes are symmetrically provided at the bottom of the second connecting plate U-shaped groove (321) and located on both sides of the second steel bar (322). A hole (325) is provided at the bottom of the U-shaped groove of the second composite plate, corresponding to the second insertion hole (325), and second U-shaped steel bars (323) are inserted into the second insertion holes (325) on both sides of the second steel bars (322), and both ends of the second U-shaped steel bars (323) are sequentially inserted into the second bottom holes through the second insertion holes (325); two second threaded holes (326) are provided on the second connecting plate (320) and between adjacent second steel bars (322), and the two second threaded holes (326) are symmetrically distributed on both sides of the U-shaped groove (321) of the second connecting plate; a second threaded sleeve corresponding to the second threaded hole (326) is provided on the second composite plate (200), and a second threaded rod (324) is provided in the second threaded hole (326), and the lower end of the second threaded rod (324) passes through the second threaded hole (326) and cooperates with the second threaded sleeve.

5. The assembled building composite panel joint structure according to claim 4, characterized in that: The U-shaped steel plate (330) is arranged between the first connecting plate (310) and the second connecting plate (320), and one side is welded to the first connecting plate (310), and the other side is welded to the second connecting plate (320). A first U-shaped steel plate through hole (331) corresponding to the plurality of first through holes is provided on a side of the U-shaped steel plate (330) close to the first connecting plate (310). One end of the first steel bar (312) passes through the first through hole (317) and the first through hole (331) in sequence. A U-shaped steel plate through hole (331) is provided to freely extend to the upper position of the middle part of the U-shaped steel plate (330); a second U-shaped steel plate through hole (332) corresponding to a plurality of second through holes (327) is provided on one side of the U-shaped steel plate (330) close to the second connecting plate (320); one end of the second steel bar (322) passes through the second through hole (327) and the second U-shaped steel plate through hole (332) in sequence and then freely extends to the upper position of the middle part of the U-shaped steel plate (330).

6. A construction method for a prefabricated building composite panel joint structure, the construction method is based on the prefabricated building composite panel joint structure according to any one of claims 1 to 5, characterized in that: The construction method comprises the following steps Step 1: First, a first U-shaped groove of the first laminated plate is opened at the middle position of the top of the first laminated plate along its width direction, and then a second U-shaped groove of the second laminated plate is opened at the middle position of the top of the second laminated plate along its width direction; The second step: a first bottom hole is formed at the bottom of the U-shaped groove of the first laminated plate, and a second bottom hole is formed at the bottom of the U-shaped groove of the second laminated plate; the third step: a first through hole is drilled on the first laminated plate, and a second through hole is drilled on the second laminated plate; Step 4: Drill first threaded sleeve fixing holes and second threaded sleeve fixing holes on both sides of the top of the first laminated plate and the second laminated plate, then insert the first threaded sleeve and the second threaded sleeve into the first threaded sleeve fixing holes and the second threaded sleeve fixing holes, and pour cement to fix them inside the first laminated plate and the second laminated plate; Step 5: insert the bottom steel plate of the U-shaped groove of the first connecting plate on the first connecting plate into the U-shaped groove of the first composite plate, and then pass the first steel bar through the first through hole, the through hole of the U-shaped groove of the first connecting plate and the through hole of the first U-shaped steel plate and then freely extend to the upper position of the middle part of the U-shaped steel plate, and then use the two ends of the first U-shaped steel bar to pass through the first insertion hole in sequence and insert into the first bottom hole, and finally rotate the first threaded rod to pass through the first threaded hole and match with the first threaded sleeve to be fixedly connected; Step 6: While performing the fifth step, insert the bottom steel plate of the second connecting plate U-shaped groove on the second connecting plate into the U-shaped groove of the second composite plate, and then pass the second steel bar through the second through hole, the through hole of the U-shaped groove of the second connecting plate and the through hole of the second U-shaped steel plate to freely extend to the upper position of the middle part of the U-shaped steel plate, and then use the two ends of the second U-shaped steel bar to pass through the second insertion hole in sequence and insert into the second bottom hole, and finally rotate the second threaded rod to pass through the second threaded hole and match with the second threaded sleeve to be fixedly connected; Step 7: Then pour concrete into the U-shaped groove of the first connecting plate, the U-shaped groove of the second connecting plate and the U-shaped steel plate, so that the concrete fixes the first steel bar, the second steel bar, the first U-shaped steel bar and the second U-shaped steel bar, thereby fixing the first connecting plate and the second connecting plate to the second composite plate and the first composite plate.

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