A prefabricated PC building structure and construction method thereof

Abstract

The present application relates to an assembled PC building structure and a construction method thereof, which comprises two mutually perpendicular wall panels, and one end of the two wall panels are butted, an inner fixing member is provided at the inner corner after the wall panels are butted, and an outer fixing member is provided at the outer corner after the wall panels are butted; the inner fixing member comprises two mutually perpendicular and L-shaped inner connecting strips, and the inner connecting strips are fixedly connected to the inner surface of the wall panel; the outer fixing member comprises a mutually perpendicular and L-shaped outer connecting strip, and the outer connecting strip is fixedly connected to the outer surface of the wall panel, and a casting cavity for casting concrete is formed between the outer connecting strip and the ends of the two wall panels facing each other, and a plurality of reinforcing columns are pre-embedded in the wall panel, and the ends of the reinforcing columns extend into the casting cavity. The present application has the effect of improving the strength of the connection of the wall panels.

Description

Technical Field

[0001] The present application relates to the field of construction, and in particular to an assembled PC building structure and a construction method thereof. Background Art

[0002] Prefabricated buildings refer to buildings that transfer a large amount of on-site work in traditional construction methods to factories, where building components and accessories such as floor slabs, wall panels, stairs, balconies, etc. are processed and manufactured in factories, then transported to the construction site and assembled and installed on site through reliable connection methods. Prefabricated building components can greatly shorten the construction period and have the advantages of being green, environmentally friendly and sustainable.

[0003] At present, in prefabricated buildings, the connection between wall panels is mostly plug-in cooperation. This assembly method often requires the corresponding slot structure and column structure to be opened on the wall panels in advance. During the on-site assembly process, the wall panels need to be assembled by docking the column structure and the slot structure.

[0004] With respect to the above-mentioned related technologies, the inventors believe that during the wall panel assembly process, slots are opened on the wall panels and then they are snapped together, which results in low strength at the plug-in joints and a defect of poor strength at the wall panel connection. Summary of the invention

[0005] In order to improve the strength of the wall panel joints, the present application provides an assembled PC building structure and a construction method thereof.

[0006] On the one hand, the present application provides an assembled PC building structure adopting the following technical solution:

[0007] An assembled PC building structure comprises two mutually perpendicular wall panels, one end of the two wall panels are butted, an inner fixing piece is arranged at the inner corner after the wall panels are butted, and an outer fixing piece is arranged at the outer corner after the wall panels are butted;

[0008] The internal fixing member includes two inner connecting strips which are perpendicular to each other and in an L shape, and the inner connecting strips are fixedly connected to the inner surface of the wall panel;

[0009] The external fixing parts include mutually perpendicular and L-shaped external connecting strips, which are fixedly connected to the outer surface of the wall panel, and a casting cavity for casting concrete is formed between the external connecting strip and the ends facing the two wall panels. A plurality of reinforcing columns are embedded in the wall panel, and the ends of the reinforcing columns extend into the casting cavity.

[0010] By adopting the above technical solution, when the wall panels are being constructed, the internal fixings can initially fix the two wall panels, and the external fixings can further reliably fix the two wall panels. The internal fixings and external fixings can clamp the wall panels in both directions. After clamping, concrete is injected between the external fixings and the ends of the two wall panels, and the two wall panels are spliced ​​with concrete. The reinforcing columns can be used as the skeleton structure inside the concrete, so that the two wall panels are more stable after being spliced ​​and fixed, and the embedded ends are higher. In addition, when the two wall panels are spliced, the two wall panels only need to be aligned vertically at the ends, and there is no need for the two wall panels to form a plug-in fit, so the construction difficulty is relatively low. After the internal fixings align the two wall panels, subsequent rapid and accurate construction can be achieved, making the installation of the wall panels more efficient.

[0011] Optionally, the outer surfaces of the wall panels are provided with embedding grooves at the ends close to each other, the embedding grooves extend to the end of the wall panels facing the casting cavity, the two ends of the external connecting strips are respectively inserted into the corresponding embedding grooves and the external connecting strips are bonded and fixed to the surface of the embedding grooves.

[0012] By adopting the above technical solution, both ends of the external connecting strip are inserted into the embedding groove during installation, and the external connecting strip is fixed to the wall panel by bonding. Therefore, the integrity between the external connecting strip and the wall panel is stronger, and after the two ends of the external connecting strip are against the ends of the embedding groove, the wall panel will not be offset during the installation process, thereby indirectly improving the reliability of the wall panel construction process.

[0013] Optionally, the reinforcement columns corresponding to the two wall panels are arranged alternately in the vertical direction.

[0014] By adopting the above technical solution, the reinforcement columns corresponding to the two wall panels are staggered in the vertical direction. Therefore, after pouring the concrete, the overall strength of the concrete is guaranteed, so that the strength of the concrete in the vertical direction remains relatively consistent, so the firmness and stability of the wall panels after construction can be greatly improved.

[0015] Optionally, the external connecting strip includes a first plate body and a second plate body that are fixedly connected and L-shaped, the first plate body is provided with a plurality of mounting holes that pass through the first plate body, the second plate body is provided with a plurality of strip holes that pass through the second plate body, and the strip holes pass through a side of the second plate body that is away from the first plate body, the plurality of mounting holes and the plurality of strip holes are staggered in the vertical direction and are provided for corresponding reinforcement columns to pass through, and the circumferential surface of the reinforcement column passing through the first plate body and one end of the second plate body is provided with an external thread and is tightened with a mounting nut.

[0016] By adopting the above technical solution, when installing the external connecting strip, align the mounting hole and the strip hole with the corresponding reinforcing column, and then slide the reinforcing column into the strip hole along the length direction of the strip hole. At this time, the corresponding reinforcing column will be gradually inserted into the mounting hole, and then the mounting nut will be screwed onto the corresponding external thread of the reinforcing column, so as to strengthen and fix the external connecting strip. The mounting nut is pressed on the surface of the first plate body and the second plate body, further improving the compression and connection stability of the entire external connecting strip on the wall panel.

[0017] Optionally, the first plate body is provided with an external countersunk hole connected to the mounting hole on the surface of the side facing away from the casting cavity, and the second plate body is also provided with an external countersunk hole connected to the strip hole on the surface of the side facing away from the casting cavity. The mounting nut is located in the external countersunk hole, and the surface of the mounting nut is flush with the surface of the first plate body and the second plate body on the side facing away from the casting chamber.

[0018] By adopting the above technical solution, after the mounting nut is tightened on the external threaded section corresponding to the reinforcing column, the mounting nut is located inside the external countersunk hole, so that the mounting nut is flush with the surface of the first plate body and the second plate body, so that the external connecting piece is effectively fixed and the mounting nut is not easy to loosen, thereby further improving the connection stability between the external connecting piece and the wall panel.

[0019] Optionally, vertically extending glue injection holes are provided on the tops of the first plate body and the second plate body, and construction glue is injected into the glue injection holes. The glue injection holes on the first plate body are connected to multiple mounting holes, and the glue injection holes on the second plate body are connected to the strip holes.

[0020] By adopting the above technical solution, after the wall panel is positioned and fixed by using the first plate body and the second plate body, construction glue is injected into the glue injection hole, and the construction glue flows into the mounting hole and the strip hole through the glue injection hole, thereby bonding the part of the reinforcing rod located in the mounting hole and the strip hole, and the mounting nut is not easy to loosen, and the integrity between the mounting nut and the first plate body and the second plate body is stronger, thereby further preventing the mounting nut from loosening easily, thereby improving the stability of the wall panel after installation.

[0021] Optionally, the inner connecting strip includes a third plate body and a fourth plate body that are fixedly connected and L-shaped, and the third plate body and the fourth plate body are both fixedly connected to the wall panel by internal bolts.

[0022] By adopting the above technical solution, the third plate body and the fourth plate body are both fixed to the wall panel by internal bolts, so that the wall panel is effectively clamped and fixed by the third plate body and the fourth plate body.

[0023] On the other hand, the present application provides a construction method for an assembled PC building structure using the following technical solution:

[0024] A construction method for an assembled PC building structure comprises the following steps:

[0025] S1. hoist the wall panels to the designated construction site, and place the two wall panels in an L-shape with their ends aligned, so that the edges of the two wall panels that are close to each other abut against each other;

[0026] S2, moving the inner connecting piece to the inner corner formed by the two wall panels, and fixing the inner connecting piece to the surfaces of the two wall panels using inner bolts to preliminarily fix the two wall panels;

[0027] S3, move the external connection piece to the positive angle formed by the two wall panels, pass the reinforcing column through the corresponding mounting hole and the strip hole, until the first plate body and the second plate body are inserted into the embedding groove and bonded and fixed to the wall panels, and tighten the mounting nut to perform secondary fixation on the two wall panels;

[0028] S4. Inject construction glue into the injection hole and cure at room temperature for 1-2 days;

[0029] S5. Pour concrete downward from the top of the casting cavity until the entire casting cavity is filled;

[0030] S6. Curing of concrete for 3-5 days.

[0031] By adopting the above technical scheme, during construction, firstly, the two wall panels are aligned in an L shape, and then the two wall panels are preliminarily positioned using the internal connecting parts to improve the convenience of subsequent operations. Then, the external connecting parts are installed so that the reinforcing columns pass through the installation holes and the strip holes respectively, and the installation nuts are tightened. The wall panels are clamped by the cooperation of the internal connecting parts and the external connecting parts, which greatly improves the construction stability of the wall panels. Before pouring concrete, glue is first injected into the glue injection holes, which can make the reinforcing rods and the first and second plate bodies more integrated and form a more stable and reliable connection. After concrete is injected into the casting cavity, it is cured for 1-2 days to form a stable and reliable connection between the two wall panels, and the strength of the connection of the wall panels is effectively guaranteed.

[0032] Optionally, in step S2, the inner connecting member may be first fixed to a side edge of one of the wall panels by inner bolts, and then the second wall panel may be hoisted and fixedly connected to the inner connecting member by new inner bolts.

[0033] By adopting the above technical solution, in the actual construction process, you can choose whether to align the ends of the wall panels into an L shape first or to fix the wall panels and the internal connectors first according to the actual situation. Specifically: When the construction space is large and the operation is relatively convenient, you can first align the two wall panels, and then fix the internal connectors. This construction method is relatively simple and convenient. When the construction space is limited and it is difficult for the workers to install the internal connectors after aligning the wall panels, you can first fix the internal connectors to one of the wall panels, and then install the other wall panel. The alignment position of the two wall panels can be directly found through the internal connectors. This can save a lot of wall panel alignment operation time and improve construction convenience.

[0034] In summary, the present application includes at least one of the following beneficial technical effects:

[0035] 1. By arranging inner and outer connectors at the ends of two L-shaped wall panels that are aligned, the installation strength of the two wall panels is effectively improved;

[0036] 2. By injecting concrete into the casting cavity and using the reinforcement column in the casting cavity, the strength of the connection of the wall panel is further improved;

[0037] 3. By utilizing the threaded section of the reinforcing column and the threaded locking of the mounting nut, the connection tightness between the external connecting member and the wall panel is further improved, thereby improving the strength of the wall panel at the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a schematic diagram of the wall panel structure of the present application embodiment;

[0039] Figure 2 This is an exploded schematic diagram of the inner and outer connecting strips and the wall panels exploded apart in the embodiment of the present application;

[0040] Figure 3 This is a schematic diagram of the local structure of the embodiment of the present application intended to emphasize the internal connecting strip.

[0041] Explanation of the reference numerals: 1. wall panel; 11. embedded groove; 12. reinforcement column; 121. external thread; 122. mounting nut; 2. external connecting strip; 21. first plate body; 211. mounting hole; 22. second plate body; 221. strip hole; 3. external countersunk hole; 4. casting cavity; 5. internal connecting strip; 51. third plate body; 52. fourth plate body; 6. internal bolt; 61. internal nut; 7. glue injection hole. DETAILED DESCRIPTION

[0042] The following is combined with Figure 1-3 This application is described in further detail.

[0043] The present application embodiment discloses an assembled PC building structure. Figure 1 The assembled PC building structure includes a wall panel 1. In this embodiment, the ends of the two wall panels 1 are perpendicular to each other, and internal fixings and external fixings for reinforcing the wall panels 1 are arranged at the end positions of the two wall panels 1. The internal fixings are arranged at the negative angles formed by the two wall panels 1, and the external fixings are arranged at the positive angles formed by the two wall panels 1. Both the internal fixings and the external fixings are fixed to the surface of the wall panel 1.

[0044] like Figure 2 As shown, in this embodiment, the external fixing member is an external connecting strip 2, and the external connecting strip 2 includes a first plate body 21 and a second plate body 22. The first plate body 21 and the second plate body 22 are fixed into an L shape. In this embodiment, the first plate body 21 and the second plate body 22 are integrally formed to ensure that the external connecting strip 2 is more stable and reliable when reinforcing the wall panel 1.

[0045] like Figure 2 As shown, in order to improve the surface flatness of the wall panel 1 after installation, a groove 11 is provided on the side of the wall panel 1 facing the external corner, and the groove 11 extends to one end of the wall panel 1. The first plate 21 and the second plate 22 are clamped in the groove 11, and the outer side of the first plate 21 and the outer side of the second plate 22 are flush with the surface of the corresponding wall panel 1. In order to further improve the tightness between the wall panel 1 and the external connection piece, the groove surface of the groove 11 is coated with construction glue, so that the external connection piece and the wall panel 1 are bonded and fixed.

[0046] like Figure 2 As shown, after the external connecting member is fixed to the wall panel 1, a casting cavity 4 for casting concrete is formed between the external connecting strip 2 and the ends of the two wall panels 1, and a reinforcing column 12 is pre-buried inside the wall panel 1, and the end of the reinforcing column 12 extends into the casting cavity 4, and the reinforcing columns 12 corresponding to the two wall panels 1 are staggered in the vertical direction, and a mounting hole 211 is opened on the first plate body 21, and a strip hole 221 is opened on the second plate body 22, and the mounting hole 211 and the strip hole 221 are opposite to the corresponding reinforcing column 12, and a plurality of external countersunk holes 3 are opened on the surface of the first plate body 21 and the second plate body 22 facing away from the casting cavity 4, and the external countersunk holes 3 located on the first plate body 21 are connected with the mounting holes 211, and the external countersunk holes 3 located on the second plate body 22 are connected with the strip holes 221. The end of the reinforcing column 12 is provided with an external thread 121 and passes through a strip hole 221 or a mounting hole 211, and a mounting nut 122 is provided in the countersunk hole and is threadedly connected to the reinforcing column 12. After tightening the mounting nut 122, the connection between the first plate body 21, the second plate body 22 and the wall panel 1 can be made tighter, thereby further improving the firmness of the wall panel 1.

[0047] like Figure 2As shown, the strip hole 221 is long and runs through the side edge of the second plate body 22 in the direction away from the first plate body 21. Therefore, when installing the external connecting bar 2, the reinforcing column 12 can be slid into along the strip hole 221. At the same time, the reinforcing column 12 facing the mounting hole 211 can also be gradually inserted into the mounting hole 211, making the installation of the external connecting bar 2 more convenient.

[0048] like Figure 2 As shown, the tops of the first plate body 21 and the second plate body 22 are provided with injection holes 7, which extend vertically and are connected to the mounting holes 211 or the strip holes 221 in the same vertical direction. After the mounting nut 122 is tightened on the end of the reinforcing column 12, construction glue is injected through the injection holes 7, so that the reinforcing column 12 is bonded and fixed to the first plate body 21 and the second plate body 22, and then concrete is injected into the casting cavity 4, which can improve the integrity of the wall panel 1, the reinforcing column 12 and the external connecting strip 2, and the strength of the wall panel 1 after construction is greatly improved.

[0049] like Figure 3 As shown, the internal fixing member includes an internal connecting strip 5, and the internal connecting strip 5 includes a third plate body 51 and a fourth plate body 52, and the third plate body 51 and the fourth plate body 52 are fixed vertically to each other to form an L shape. In this embodiment, the third plate body 51 and the fourth plate body 52 are integrally formed. The wall panel 1 is provided with a plurality of internal bolts 6 on the side surface close to the inner corner, and the internal bolts 6 are fixed inside the wall panel 1 in a pre-embedded manner. The third plate body 51 and the fourth plate body 52 are provided with a plurality of through holes facing the internal bolts 6. During installation, the internal bolts 6 are passed through the through holes, and the third plate body 51 and the fourth plate body 52 are attached to the corresponding surface of the wall panel 1, and then the internal nut 61 is tightened at the end of the internal bolt 6 passing through the through hole, so that the inner corner position of the wall panel 1 is strengthened and fixed, and the firmness of the wall panel 1 is further improved.

[0050] The present application also discloses a construction method of an assembled PC building structure, which comprises the following steps:

[0051] S1, hoisting the wall panels 1 to the designated construction site, and placing the two wall panels 1 in an L-shape with their ends aligned, and the edges of the two wall panels 1 that are close to each other abut against each other;

[0052] S2, moving the inner connecting piece to the inner corner formed by the two wall panels 1, and fixing the inner connecting piece to the surfaces of the two wall panels 1 by using the inner bolts 6, so as to preliminarily fix the two wall panels 1;

[0053] S3, move the external connection piece to the positive angle position formed by the two wall panels 1, let the reinforcing column 12 pass through the corresponding installation hole 211 and the strip hole 221, and the reinforcing column 12 facing the strip hole 221 slides along the strip hole 221 until the first plate body 21 and the second plate body 22 are snapped into the embedding groove 11, the first plate body 21, the second plate body 22 and the wall panel 1 are bonded and fixed, and the installation nut 122 is tightened to fix the two wall panels 1 for the second time;

[0054] S4, inject construction glue into the glue injection hole 7, and cure it at room temperature for 1-2 days. After the glue solidifies, the reinforcing column 12 and the outer connecting strip 2 are bonded and fixed. At the same time, part of the glue will flow into the gap between the mounting nut 122 and the reinforcing column 12 to prevent the mounting nut 122 from loosening;

[0055] S5, injecting concrete from the top of the casting cavity 4 downwards until the entire casting cavity 4 is filled;

[0056] S6. Curing the concrete for 3-5 days. After the concrete solidifies, the reinforcing column 12 inside the casting cavity 4 can play a skeleton role, so that the integrity between the solidified concrete and the wall panel 1 is enhanced, and the connection stability between the wall panel 1 and the external connecting strip 2 is also greatly improved.

[0057] Step S2 in the embodiment of the present application is suitable for a relatively spacious environment where the two wall panels 1 can be easily placed in an L shape. However, when the operating space is limited, the internal connecting strip 5 can be first fixed to one of the wall panels 1, and then the other wall panel 1 can be moved to the designated position, and the position of the other wall panel 1 can be accurately found through the internal connecting strip 5.

[0058] The implementation principle of an assembled PC building in an embodiment of the present application is as follows: since an inner connecting strip 5 and an outer connecting strip 2 are respectively arranged at the inner corner and the outer corner of the wall panel 1, the wall panel 1 is subjected to bidirectional clamping, and the wall panel 1 has high stability after installation, and concrete is injected into the casting cavity 4. After the concrete and the reinforcing column 12 cooperate, the firmness between the outer connecting strip 2 and the wall panel 1 is further improved, thereby greatly improving the stability, firmness and reliability of the entire wall panel 1 after installation.

[0059] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An assembled PC building structure, comprising two mutually perpendicular wall panels (1), one end of the two wall panels (1) being butted, characterized in that: The inner corners of the wall panels (1) after they are butted together are provided with inner fixing parts, and the outer corners of the wall panels (1) after they are butted together are provided with outer fixing parts; The internal fixing member comprises two inner connecting strips (5) which are perpendicular to each other and in an L shape, and the inner connecting strips (5) are fixedly connected to the inner surface of the wall panel (1); The external fixing member comprises mutually perpendicular and L-shaped external connection strips (2), the external connection strips (2) being fixedly connected to the outer surface of the wall panel (1), and a casting cavity (4) for casting concrete is formed between the external connection strips (2) and the ends of the two wall panels (1) facing each other, and a plurality of reinforcing columns (12) are pre-buried in the wall panel (1), and the ends of the reinforcing columns (12) extend into the casting cavity (4); The external connecting strip (2) comprises a first plate body (21) and a second plate body (22) which are fixedly connected and L-shaped, the first plate body (21) is provided with a plurality of mounting holes (211) penetrating the first plate body (21), the second plate body (22) is provided with a plurality of strip holes (221) penetrating the second plate body (22), and the strip holes (221) penetrate the side of the second plate body (22) away from the first plate body (21), the plurality of mounting holes (211) and the plurality of strip holes (221) are staggered in the vertical direction and are provided for corresponding reinforcing columns (12) to pass through, and the circumferential surface of one end of the reinforcing column (12) passing through the first plate body (21) and the second plate body (22) is provided with an external thread (121) and is tightened with a mounting nut (122); The inner connecting strip (5) comprises a third plate body (51) and a fourth plate body (52) which are fixedly connected and L-shaped, and the third plate body (51) and the fourth plate body (52) are both fixedly connected to the wall panel (1) via inner bolts (6).

2. The assembled PC building structure according to claim 1, characterized in that: The outer surfaces of the wall panels (1) are provided with embedding grooves (11) at the ends close to each other, the embedding grooves (11) extending through the end of the wall panel (1) facing the casting cavity (4), the two ends of the external connecting strip (2) are respectively inserted into the corresponding embedding grooves (11), and the external connecting strip (2) is bonded and fixed to the surface of the embedding groove (11).

3. The assembled PC building structure according to claim 2, characterized in that: The reinforcement columns (12) corresponding to the two wall panels (1) are arranged alternately in the vertical direction.

4. The assembled PC building structure according to claim 3, characterized in that: The first plate body (21) is provided with an outer countersunk hole (3) in communication with the mounting hole (211) on the surface of the side facing away from the casting cavity (4); the second plate body (22) is also provided with an outer countersunk hole (3) in communication with the strip hole (221) on the surface of the side facing away from the casting cavity (4); the mounting nut (122) is located in the outer countersunk hole (3), and the surface of the mounting nut (122) is flush with the surface of the first plate body (21) and the second plate body (22) on the side facing away from the casting chamber.

5. The assembled PC building structure according to claim 3, characterized in that: The tops of the first plate body (21) and the second plate body (22) are both provided with vertically extending glue injection holes (7), into which construction glue is injected, and the glue injection holes (7) on the first plate body (21) are all connected to the plurality of mounting holes (211), and the glue injection holes (7) on the second plate body (22) are all connected to the strip holes (221).

6. A construction method for an assembled PC building structure according to any one of claims 2 to 5, characterized in that: The following steps are involved: S1, hoisting the wall panels (1) to the designated construction site, and placing the two wall panels (1) in an L-shape with their ends aligned, so that the edges of the two wall panels (1) close to each other abut against each other; S2, moving the inner connecting piece to the inner corner formed by the two wall panels (1), and fixing the inner connecting piece to the surfaces of the two wall panels (1) using inner bolts (6), so as to preliminarily fix the two wall panels (1); S3, move the external connection piece to the positive angle position formed by the two wall panels (1), allow the reinforcing column (12) to pass through the corresponding mounting hole (211) and the strip hole (221), until the first plate body (21) and the second plate body (22) are inserted into the embedding groove (11) and are bonded and fixed to the wall panel (1), and tighten the mounting nut (122) to perform secondary fixation on the two wall panels (1); S4, injecting construction glue into the glue injection hole (7) and curing at room temperature for 1-2 days; S5, injecting concrete from the top of the casting cavity (4) downwards until the entire casting cavity (4) is filled; S6. Curing of concrete for 3-5 days.

7. The construction method of a prefabricated PC building structure according to claim 6, characterized in that: In step S2, the inner connecting member may be first fixed to the edge of one side of one of the wall panels (1) by means of the inner bolts (6), and then the second wall panel (1) may be hoisted and the second wall panel (1) and the inner connecting member may be fixedly connected by means of the new inner bolts (6).

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