A prefabricated building composite slab joint structure and its construction method

Abstract

To address the poor connection performance of existing composite slab joint structures, this invention provides a prefabricated building composite slab joint structure, comprising a first composite slab; a second composite slab, the first and second composite slabs being arranged parallel to each other at intervals at the locations where they need to be installed; and a connecting structure capable of quickly and firmly connecting the first and second composite slabs together, the connecting structure being fixedly mounted on the upper side of the first and second composite slabs. This invention features a reasonable overall design, simple structure, and convenient operation. It not only increases the strength between each composite slab but also enhances overall stability. Other procedures can be performed without waiting for the concrete to set, resulting in high efficiency, fast splicing speed, and improved project progress. Furthermore, installation and construction are simple and convenient. The use of a mixture of concrete and connectors further improves the strength and stability of the joints.

Description

Technical Field

[0001] This invention belongs to the field of prefabricated building composite slab splicing technology, and specifically relates to a splicing structure of prefabricated building composite slabs and its construction method. Background Technology

[0002] Composite floor slabs are assembled monolithic floor slabs made by stacking precast slabs and cast-in-place reinforced concrete layers. Composite floor slabs have good integrity, and the upper and lower surfaces of the slab are flat, which facilitates the finishing layer decoration. They are suitable for high-rise buildings and large-span buildings with high requirements for overall rigidity.

[0003] Currently, most existing composite slab joint structures are made of poured concrete, 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, resulting in poor overall stability between the composite slabs.

[0004] In addition, the composite slab joint structure made by concrete pouring requires a lot of time to wait for the concrete to set, which results in low overall efficiency, slow construction speed, and serious impact on the project progress.

[0005] Furthermore, although a small number of connections in the market use connectors, most of these connections have simple structures and poor stability, making it difficult to effectively increase the strength of the connections between composite panels and causing considerable inconvenience to the splicing and joining of composite panels. Summary of the Invention

[0006] In order to improve the connection performance between two composite slabs, the present invention provides a prefabricated building composite slab splicing structure and its construction method.

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

[0008] A prefabricated building composite slab splicing structure, characterized in that it includes:

[0009] The first composite plate;

[0010] A second composite plate, wherein the first composite plate and the second composite plate are arranged in parallel and spaced apart at the positions where the first composite plate and the second composite plate need to be installed;

[0011] A connection structure capable of quickly and securely connecting a first laminated plate and a second laminated plate together, the connection structure being fixedly mounted on the upper side of the first laminated plate and the second laminated plate.

[0012] Furthermore, the connection structure includes

[0013] A first connecting plate capable of effectively and quickly fixing the first composite plate, the first connecting plate covering and fixing the upper side of the first composite plate;

[0014] A second connecting plate that can effectively and quickly fix the second composite plate, the second connecting plate covering and fixing the upper side of the second composite plate;

[0015] A U-shaped steel plate capable of effectively fixing and connecting a first connecting plate and a second connecting plate, wherein the U-shaped steel plate is disposed between the first connecting plate and the second connecting plate and covers the splice seam between the first composite plate and the second composite plate.

[0016] Furthermore, a first connecting plate U-shaped groove is provided in the middle of the first connecting plate along its width direction, and a first composite plate U-shaped groove that mates with the first connecting plate U-shaped groove is provided in the middle of the first composite plate along its width direction. Multiple first through holes are symmetrically provided on the first composite plate and on both sides of the first composite plate U-shaped groove, with the multiple first through holes 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 opened on both sides of the first connecting plate U-shaped groove. A first reinforcing bar is inserted into 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... A first insertion hole is symmetrically provided on both sides of a reinforcing 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 reinforcing bar is inserted into the first insertion hole on both sides of the first reinforcing bar. The two ends of the first U-shaped reinforcing bar pass through the first insertion hole and are inserted into the first bottom hole in sequence. Two first threaded holes are provided on the first connecting plate and between adjacent first reinforcing 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. The lower end of the first threaded rod passes through the first threaded hole and engages 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, and a second composite plate U-shaped groove that mates with the second connecting plate U-shaped groove is provided in the middle of the second composite plate along its width direction. Multiple second through holes are symmetrically provided on the second composite plate and on both sides of the second composite plate U-shaped groove, and the multiple 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 opened on both sides of the second connecting plate U-shaped groove. A second reinforcing bar is inserted into the second through holes and the second connecting plate U-shaped groove through holes on the same straight line. At the bottom of the second connecting plate U-shaped groove and located at the... The two reinforcing bars are symmetrically provided with second insertion holes on both sides. The bottom of the U-shaped groove of the second composite plate is provided with a second bottom hole corresponding to the second insertion hole. The second U-shaped reinforcing bars are inserted into the second insertion holes on both sides of the second reinforcing bars. The two ends of the second U-shaped reinforcing bars pass through the second insertion holes and are inserted into the second bottom holes in sequence. The second connecting plate is provided with two second threaded holes located between adjacent second reinforcing bars. The two second threaded holes are symmetrically distributed on both sides of the U-shaped groove of the second connecting plate. The second composite plate is provided with a second threaded sleeve corresponding to the second threaded hole. The second threaded rod is provided in the second threaded hole. 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 disposed between the first connecting plate and the second connecting plate, with one side welded to the first connecting plate and the other side welded to the second connecting plate. On the side of the U-shaped steel plate near the first connecting plate, there are first U-shaped steel plate through holes corresponding to a plurality of first through holes. One end of the first reinforcing bar passes through the first through hole and the first U-shaped steel plate through hole in sequence and extends freely to the upper side of the middle of the U-shaped steel plate. On the side of the U-shaped steel plate near the second connecting plate, there are second U-shaped steel plate through holes corresponding to a plurality of second through holes. One end of the second reinforcing bar passes through the second through hole and the second U-shaped steel plate through hole in sequence and extends freely to the upper side of the middle of the U-shaped steel plate.

[0019] This invention also provides a construction method for prefabricated building composite slab joint structures, characterized by comprising the following steps:

[0020] First step: First, a U-shaped groove for the first composite plate is opened at the middle of the top of the first composite plate along its width direction, and then a U-shaped groove for the second composite plate is opened at the middle of the top of the second composite plate along its width direction.

[0021] Second step: A first bottom hole is opened at the bottom of the U-shaped groove of the first composite plate, and a second bottom hole is opened at the bottom of the U-shaped groove of the second composite plate; Third step: A first through hole is drilled in the first composite plate, and a second through hole is drilled in the second composite plate.

[0022] Fourth step: Drill first threaded sleeve fixing holes and second threaded sleeve fixing holes on both sides of the top of the first and second composite plates. 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 and second composite plates.

[0023] Fifth step: Insert the bottom steel plate of the U-shaped groove of the first connecting plate into the U-shaped groove of the first composite plate. Then, after the first steel bar passes 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, it extends freely to the upper side of the middle of the U-shaped steel plate. Then, use the two ends of the first U-shaped steel bar to pass through the first insertion hole and insert into the first bottom hole in sequence. Finally, rotate the first threaded rod to pass through the first threaded hole and cooperate with the first threaded sleeve to fix and connect it.

[0024] Sixth step: While performing the fifth step, insert the bottom steel plate of the second connecting plate U-shaped groove into the second composite plate U-shaped groove. Then, after the second steel bar passes through the second through hole, the second connecting plate U-shaped groove through hole and the second U-shaped steel plate through hole, it extends freely to the upper side of the middle of the U-shaped steel plate. Then, use the two ends of the second U-shaped steel bar to pass through the second insertion hole and insert into the second bottom hole in sequence. Finally, rotate the second threaded rod to pass through the second threaded hole and cooperate with the second threaded sleeve to fix and connect it.

[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 to fix the first reinforcing bar, the second reinforcing bar, the first U-shaped reinforcing bar, and the second U-shaped reinforcing bar, thereby fixing the first connecting plate and the second connecting plate to the second composite plate and the first composite plate.

[0026] This invention discloses a prefabricated building composite slab splicing structure and its construction method. The composite slab splicing structure has a reasonable overall design, simple structure, and convenient operation. It not only increases the firmness between each composite slab but also enhances the overall stability. Other procedures can be carried out without waiting for the concrete to set, resulting in high efficiency, fast splicing speed, and improved project progress. Moreover, the installation and construction are simple and convenient. The use of a mixture of concrete and connectors improves the firmness between the splices without affecting disassembly, making it more robust and stable than single connectors on the market. Attached Figure Description

[0027] Figure 1 This is a structural schematic diagram of a prefabricated building composite panel splicing structure according to the present invention.

[0028] Figure 2 This is a schematic diagram of the first connecting plate of a prefabricated building composite panel splicing structure according to the present invention.

[0029] Figure 3This is a schematic diagram of the second connecting plate of a prefabricated building composite panel splicing structure according to the present invention.

[0030] Figure 4 This is a schematic diagram of the U-shaped steel plate of the prefabricated building composite panel splicing structure according to the present invention.

[0031] Figure 5 This is a schematic diagram of the prefabricated building composite slab joint structure after concrete pouring according to the present invention. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0033] Example 1

[0034] refer to Figures 1 to 5 The prefabricated building composite panel splicing structure of this embodiment includes a first composite panel 100, a second composite panel 200 and a connecting structure 300.

[0035] The first composite plate 100 and the second composite plate 200 are arranged parallel to each other at intervals at the positions where the first composite plate 100 and the second composite plate 200 need to be set. The connecting structure 300 can quickly and firmly connect the first composite plate 100 and the second composite plate 200 together. The connecting structure 300 covers and fixes the upper side of the first composite plate 100 and the second composite 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 and covers and fixes the upper side of the first composite plate 100. The second connecting plate 320 can effectively and quickly fix the second composite plate 200 and covers and fixes 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 placed between the first connecting plate 310 and the second connecting plate 320 and covers the splice seam 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. A first overlapping plate U-shaped groove that mates with the first connecting plate U-shaped groove 311 is provided in the middle of the first overlapping plate 310 along its width direction. A plurality of first through holes are symmetrically provided on the first overlapping plate 310 and on both sides of the first overlapping plate U-shaped groove. The plurality of first through holes are spaced apart along the width direction of the first overlapping plate 100.

[0039] On both sides of the first connecting plate U-shaped groove 311, there are first connecting plate U-shaped groove through holes 317 corresponding to the first through holes. A first reinforcing 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.

[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 reinforcing 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. A first U-shaped reinforcing bar 313 is inserted into the first insertion holes on both sides of the first reinforcing bar 312. The two ends of the first U-shaped reinforcing bar 313 pass through the first insertion hole 315 and are inserted into the first bottom hole in sequence.

[0041] Two first threaded holes 316 are provided on the first connecting plate 310 and between adjacent first reinforcing 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. A second overlapping plate U-shaped groove that mates with the second connecting plate U-shaped groove 321 is provided in the middle of the second overlapping plate 200 along its width direction. A plurality of second through holes are symmetrically provided on the second overlapping plate 200 and on both sides of the second overlapping plate U-shaped groove. The plurality of second through holes are spaced apart along the width direction of the second overlapping plate 200.

[0043] On both sides of the second connecting plate U-shaped groove 321, there are second connecting plate U-shaped groove through holes 327 corresponding to the second through holes. 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.

[0044] A second insertion hole 325 is symmetrically provided at the bottom of the U-shaped groove 321 of the second connecting plate and on both sides of the second reinforcing 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. A second U-shaped reinforcing bar 323 is inserted into the second insertion hole 325 on both sides of the second reinforcing bar 322. The two ends of the second U-shaped reinforcing bar 323 pass through the second insertion hole 325 and are inserted into the second bottom hole in sequence.

[0045] Two second threaded holes 326 are provided on the second connecting plate 320 and between adjacent second reinforcing 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] In a preferred embodiment, the U-shaped steel plate 330 is disposed between the first connecting plate 310 and the second connecting plate 320, with one side welded to the first connecting plate 310 and the other side welded to the second connecting plate 320. On the side of the U-shaped steel plate 330 near the first connecting plate 310, there is a first U-shaped steel plate through hole 331 corresponding to a plurality of first through holes. One end of the first reinforcing bar 312 passes through the first through hole 317 and the first U-shaped steel plate through hole 331 in sequence and extends freely to the upper side of the middle part of the U-shaped steel plate 330.

[0047] On the side of the U-shaped steel plate 330 near the second connecting plate 320, there are second U-shaped steel plate through holes 332 corresponding to multiple second through holes 327. One end of the second reinforcing bar 322 passes through the second through hole 327 and the second U-shaped steel plate through hole 332 in sequence and then extends freely to the upper side of the middle part of the U-shaped steel plate 330.

[0048] Example 2

[0049] This embodiment provides a construction method for a prefabricated building composite slab joint structure as described in Embodiment 1, characterized by including the following steps:

[0050] First step: First, a U-shaped groove for the first composite plate is opened at the middle of the top of the first composite plate along its width direction, and then a U-shaped groove for the second composite plate is opened at the middle of the top of the second composite plate along its width direction.

[0051] Second step: A first bottom hole is opened at the bottom of the U-shaped groove of the first composite plate, and a second bottom hole is opened at the bottom of the U-shaped groove of the second composite plate; Third step: A first through hole is drilled in the first composite plate, and a second through hole is drilled in the second composite plate.

[0052] Fourth step: Drill first threaded sleeve fixing holes and second threaded sleeve fixing holes on both sides of the top of the first and second composite plates. 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 and second composite plates.

[0053] Fifth step: Insert the bottom steel plate of the U-shaped groove of the first connecting plate into the U-shaped groove of the first composite plate. Then, after the first steel bar passes 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, it extends freely to the upper side of the middle of the U-shaped steel plate. Then, use the two ends of the first U-shaped steel bar to pass through the first insertion hole and insert into the first bottom hole in sequence. Finally, rotate the first threaded rod to pass through the first threaded hole and cooperate with the first threaded sleeve to fix and connect it.

[0054] Sixth step: While performing the fifth step, insert the bottom steel plate of the second connecting plate U-shaped groove into the second composite plate U-shaped groove. Then, after the second steel bar passes through the second through hole, the second connecting plate U-shaped groove through hole and the second U-shaped steel plate through hole, it extends freely to the upper side of the middle of the U-shaped steel plate. Then, use the two ends of the second U-shaped steel bar to pass through the second insertion hole and insert into the second bottom hole in sequence. Finally, rotate the second threaded rod to pass through the second threaded hole and cooperate with the second threaded sleeve to fix and connect it.

[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 to fix the first reinforcing bar, the second reinforcing bar, the first U-shaped reinforcing bar, and the second U-shaped reinforcing bar, thereby fixing the first connecting plate and the second connecting plate to the second composite plate and the first composite plate.

[0056] This embodiment presents a prefabricated building composite slab splicing structure and its construction method. The composite slab splicing structure has a reasonable overall design, simple structure, and convenient operation. It not only increases the firmness between each composite slab but also increases the overall stability. Other procedures can be carried out without waiting for the concrete to set, resulting in high efficiency, fast splicing speed, and improved project progress. Moreover, the installation and construction operation is simple and convenient. The use of a mixture of concrete and connectors improves the firmness between the splices without affecting disassembly. It is more robust and stable than single connectors on the market.

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

Claims

1. A prefabricated building composite slab splicing structure, characterized in that, include A first composite plate (100); A second composite plate (200) is provided, wherein the first composite plate (100) and the second composite plate (200) are arranged in parallel and spaced apart at the positions where the first composite plate (100) and the second composite plate (200) need to be provided; A connection structure (300) capable of quickly and firmly connecting a first composite plate (100) and a second composite plate (200) together, the connection structure (300) covering and fixing the upper side of the first composite plate (100) and the second composite plate (200); The connection structure (300) includes A first connecting plate (310) capable of effectively and quickly fixing the first composite plate (100), the first connecting plate (310) covering and fixing the upper side of the first composite plate (100); A second connecting plate (320) capable of effectively and quickly fixing the second composite plate (200), the second connecting plate (320) covering and fixing the upper side of the second composite plate (200); A U-shaped steel plate (330) capable of effectively fixing the first connecting plate (310) and the second connecting plate (320), the U-shaped steel plate (330) being disposed between the first connecting plate (310) and the second connecting plate (320) and covering the splice seam between the first composite plate (100) and the second composite plate (200); 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 that mates with 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 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). A first connecting plate U-shaped groove through hole (317) corresponding to the first through hole is opened on both sides of the first connecting plate U-shaped groove (311). A first reinforcing 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. A first insertion hole (315) is symmetrically provided at the bottom of the first connecting plate U-shaped groove (311) and on both sides of the first reinforcing bar (312). The first composite plate has a first bottom hole at the bottom of the U-shaped groove (311) corresponding to the first insertion hole (315). The first U-shaped steel bar (313) is inserted into the first insertion hole (315) on both sides of the first steel bar (312). The two ends of the first U-shaped steel bar (313) pass through the first insertion hole (315) and are inserted into the first bottom hole. The first connecting plate (310) has two first threaded holes (316) located between the 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. The first composite plate (100) has a first threaded sleeve corresponding to the first threaded hole (316). The first threaded hole (316) has a first threaded rod (314). The lower end of the first threaded rod (314) passes through the first threaded hole (316) and cooperates with the first threaded sleeve. 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 that mates with 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 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). A second connecting plate U-shaped groove through hole (327) corresponding to the second through hole (327) is opened 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. A second insert is symmetrically provided at the bottom of the second connecting plate U-shaped groove (321) and on both sides of the second steel bar (322). Hole (325): 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. A second U-shaped steel bar (323) is inserted into the second insertion hole (325) on both sides of the second steel bar (322). The two ends of the second U-shaped steel bar (323) pass through the second insertion hole (325) and are inserted into the second bottom hole. Two second threaded holes (326) are provided on the second connecting plate (320) and between the 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 (200). 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.

2. The prefabricated building composite slab joint structure as described in claim 1, characterized in that, The U-shaped steel plate (330) is disposed between the first connecting plate (310) and the second connecting plate (320), with one side welded to the first connecting plate (310) and the other side welded to the second connecting plate (320). A first U-shaped steel plate through hole (331) corresponding to a plurality of first through holes is provided on the side of the U-shaped steel plate (330) closest to the first connecting plate (310). One end of the first reinforcing bar (312) passes sequentially through the first through hole (317) and the second through hole (320). A U-shaped steel plate through hole (331) extends freely to the upper side 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 the side of the U-shaped steel plate (330) near the second connecting plate (320); one end of the second reinforcing bar (322) passes through the second through hole (327) and the second U-shaped steel plate through hole (332) in sequence and extends freely to the upper side of the middle part of the U-shaped steel plate (330).

3. A construction method for a prefabricated building composite slab joint structure, the construction method being based on the prefabricated building composite slab joint structure described in claim 2, characterized in that, The construction method includes the following steps. First step: First, a U-shaped groove for the first composite plate is opened at the middle of the top of the first composite plate along its width direction, and then a U-shaped groove for the second composite plate is opened at the middle of the top of the second composite plate along its width direction. Second step: A first bottom hole is opened at the bottom of the U-shaped groove of the first composite plate, and a second bottom hole is opened at the bottom of the U-shaped groove of the second composite plate; Third step: A first through hole is drilled in the first composite plate, and a second through hole is drilled in the second composite plate. Fourth step: Drill first threaded sleeve fixing holes and second threaded sleeve fixing holes on both sides of the top of the first and second composite plates. 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 and second composite plates. Fifth step: Insert the bottom steel plate of the U-shaped groove of the first connecting plate into the U-shaped groove of the first composite plate. Then, after the first steel bar passes 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, it extends freely to the upper side of the middle of the U-shaped steel plate. Then, use the two ends of the first U-shaped steel bar to pass through the first insertion hole and insert into the first bottom hole in sequence. Finally, rotate the first threaded rod to pass through the first threaded hole and cooperate with the first threaded sleeve to fix and connect it. Sixth step: While performing the fifth step, insert the bottom steel plate of the second connecting plate U-shaped groove into the second composite plate U-shaped groove. Then, after the second steel bar passes through the second through hole, the second connecting plate U-shaped groove through hole and the second U-shaped steel plate through hole, it extends freely to the upper side of the middle of the U-shaped steel plate. Then, use the two ends of the second U-shaped steel bar to pass through the second insertion hole and insert into the second bottom hole in sequence. Finally, rotate the second threaded rod to pass through the second threaded hole and cooperate with the second threaded sleeve to fix and connect it. 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 to fix the first reinforcing bar, the second reinforcing bar, the first U-shaped reinforcing bar, and the second U-shaped reinforcing bar, thereby fixing the first connecting plate and the second connecting plate to the second composite plate and the first composite plate.

Images