Fabricated building connecting structure and construction method

Abstract

The invention discloses a fabricated building connecting structure and a construction method, and belongs to the technical field of fabricated buildings, the fabricated building connecting structure comprises a wall body, a supporting beam and a stand column, an inserting block is arranged at the bottom of the wall body, the supporting beam is provided with an inserting groove matched with the inserting block, and the thickness of the wall body is larger than that of the supporting beam; the part, which is not in contact with the supporting beam, of the wall body is an exposed surface; the wall body is provided with an auxiliary connecting assembly, the auxiliary connecting assembly comprises two sets of connecting frames symmetrically arranged along the inner side and the outer side of the wall body, the connecting frames are used for being attached to the side wall and the bottom of the wall body, bolt connecting holes and sling holes are formed in the tops of the connecting frames, and the two sets of connecting frames are connected through bolts. The two sets of connecting frames form a frame structure used for limiting a wall body, and detachable inclined strut assemblies are arranged in the middles of the connecting frames. A hoisting structure is formed through the connecting frame, and protection on the wall is improved; meanwhile, the connecting frame can be reused as a lifting appliance and can also be used as a connecting component to improve the connecting strength.

Description

Technical Field

[0001] The present invention belongs to the technical field of prefabricated buildings, and particularly relates to a connection structure and construction method for prefabricated buildings. Background Art

[0002] Prefabricated buildings originated in the Industrial Revolution period. The core of prefabricated buildings is to process and manufacture building components and fittings (such as floor slabs, wall panels, stairs, balconies, etc.) in a factory, transport them to the building construction site, and assemble and install them on-site through reliable connection methods.

[0003] However, for the installation of existing exterior wall structures such as prefabricated wall panels and columns, the following problems still exist in actual applications: 1. Due to the large volume and weight of the wall panel, the wall panel is mostly hoisted to the designated position by hoisting. Therefore, the wall panel needs to be lifted and pre-embedded with fixing lifting tools, such as round head lifting nails, flat head lifting nails, threaded lifting nails, etc. After hoisting, the lifting tools also need to be removed. For example, they are cut off using an angle grinder or the threaded lifting nails are screwed out and then filled with epoxy mortar. The post-treatment of the entire lifting tool is rather troublesome, which is not conducive to improving the efficiency of prefabricated installation. At the same time, the lifting tools pre-embedded in the wall also affect the production cost of the wall and the overall strength of the wall.

[0004] 2. After the wall panel is hoisted in place by a crane, multiple support members are required to support the wall panel to cooperate with subsequent wall fixing, such as concrete grouting fixing. Existing support members usually adopt adjustable steel pipe inclined supports, one end of which is fixed to the pre-embedded connection point of the wall, and the other end is fixed to the ground. After the concrete solidifies, the support members need to be removed, and the disassembly process is rather cumbersome. At the same time, the pre-embedded connection points on the wall also affect the wall surface quality.

[0005] Therefore, in view of the above problems, it is necessary to propose a prefabricated building structure that can effectively improve the installation efficiency while ensuring the connection strength of the wall panel and reduce the post-treatment work after the wall panel is installed. Summary of the Invention

[0006] The purpose of the present invention is to provide a connection structure and construction method for prefabricated buildings to solve the problems existing in the background art.

[0007] The purpose of the present invention is achieved by the following technical solutions: A connection structure for prefabricated buildings includes a wall, a support beam, and a column. An insertion block is provided at the bottom of the wall, and a slot matching with the insertion block is provided on the support beam. The wall is inserted and fixed with the support beam. The thickness of the wall is greater than that of the support beam, and the part of the wall that does not contact the support beam is the exposed surface; The wall is provided with an auxiliary connection component, which includes two sets of connection frames symmetrically arranged on both the inner and outer sides of the wall. The connection frames are used to fit on the side wall and the bottom of the wall. The top of the connection frame is provided with a bolt connection hole and a sling hole. The two sets of connection frames are connected by bolts, and the two sets of connection frames form a frame structure for restricting the wall. The middle part of the connection frame is provided with a detachable diagonal brace component.

[0008] Further, the diagonal brace component includes a spherical hinge seat and a threaded telescopic sleeve. The fixed end of the spherical hinge seat is connected to the connection frame by screws, and the rotating end of the spherical hinge seat is connected to one end of the threaded telescopic sleeve.

[0009] Further, the connection frame includes a bottom plate and a side plate. The side plate abuts against the wall surface of the wall, and the bottom plate is located on the exposed surface of the wall. The length of the side plate is greater than the height of the wall. The bolt connection hole and the sling hole are both located at one end of the side plate extending out of the wall.

[0010] Further, the connection frame is of a U-shaped structure. The length of the bottom plate is adapted to the width of the wall, and the two side plates are respectively located at both ends of the bottom plate.

[0011] Further, a support cross beam is provided between the two side plates, and a diagonal brace component is also provided in the middle of the support cross beam.

[0012] Further, the connection frame is of an inverted T-shaped structure. The length of the bottom plate is adapted to the width of the wall, and the side plate is located in the middle of the bottom plate.

[0013] Further, the connection frame is of a split structure. The connection frame includes two sets of support angle steels with the same size and specification. The support angle steels are attached to the side edges of the wall. The bottom of the support angle steel is provided with a support plate, and the support plate is located on the exposed surface of the wall. A first mounting plate is provided on the side of the support angle steel away from the wall. The first mounting plates on adjacent walls are arranged in a staggered plug-in manner and connected by bolts.

[0014] Further, the top of the support angle steel extends out of the wall, and a detachable sling plate and a connecting plate are provided at one end of the support angle steel extending out of the wall. The two sets of support angle steels are connected by the connecting plate.

[0015] Further, a connecting piece is provided on the column. The connecting piece includes a hoop and two sets of second mounting plates. The two sets of first mounting plates on one side of the wall are inserted between the corresponding two sets of second mounting plates, and the first mounting plate and the second mounting plate are fixed by bolts.

[0016] An assembly building construction method includes the following steps: S1. Pre-embed columns and support beams in advance; S2. Horizontally stack the walls transported from the factory, with spacers provided between adjacent stacked walls. S2. Place the connecting frames on the front and back sides of the wall respectively, making the connecting frames abut against the wall surface and the bottom of the wall, and then fix the connecting frames on both sides through bolt connectors. S3. Connect the connecting frame to the crane through the lifting hole, and slowly lift the auxiliary connecting component and the wall fixed in the auxiliary connecting component by the crane. S4. Move the wall to a suitable position above the support beam, insert the insertion block into the insertion slot to complete the fixation of the wall and the support beam, install the diagonal bracing components on both sides of the wall, and then separate the connecting frame from the crane. S5. If the wall and the column are wet-connected, there are protruding reinforcing bars at the corresponding positions on both sides of the wall and the column. Formwork is erected at the reinforcing bars of the wall and the column for grouting, and then the diagonal bracing components and the connecting frames are removed; if the wall and the column are dry-connected, thread-connect or weld the connecting frame to the connecting piece on the column, and then remove the diagonal bracing components. S6. Hoist the next wall through the auxiliary connecting component. If the adjacent walls are wet-connected, formwork is erected at the joint of the adjacent walls for grouting; if the adjacent walls are dry-connected, thread-connect or weld the connecting frames of the adjacent walls after the wall is installed. S7. Grout the insertion slot to fix the wall and the support beam.

[0017] The beneficial effects of the present invention are as follows: 1) A frame structure for restricting the wall is formed through the connecting frame, and the wall can be conveniently lifted through the connecting frame, improving the protection of the wall.

[0018] 2) Embedded lifting hooks or installation points for diagonal bracing components do not need to be provided on the wall, protecting the wall and reducing the subsequent treatment process.

[0019] 3) The connecting frame can be reused, can be used as a lifting tool or a connecting member, and is applicable to both dry connection and wet connection. Description of the Drawings

[0020] Figure 1 Is the front view of Embodiment 1 of the present invention; Figure 2 Is the side view of Embodiment 1 of the present invention; Figure 3 Is the front view of Embodiment 2 of the present invention; Figure 4 Is the front view before the installation of the wall and the column in Embodiment 3 of the present invention; Figure 5 Is the top view after the installation of the wall and the column in Embodiment 3 of the present invention; Figure 6Schematic diagram of the installation of adjacent walls in Embodiment 3 of the present invention, where A is the schematic diagram before installation and B is the schematic diagram after installation; Figure 7 Schematic diagram of the installation of the connecting frame and the wall in Embodiment 4 of the present invention; In the figure, 1 - column, 2 - support beam, 21 - slot, 3 - wall, 31 - insertion block, 4 - connecting frame, 41 - side plate, 42 - bottom plate, 43 - bolt connection hole, 44 - sling hole, 45 - support cross beam, 5 - diagonal brace assembly, 51 - spherical hinge seat, 52 - threaded telescopic sleeve, 6 - support angle steel, 61 - first mounting plate, 62 - sling plate, 63 - connecting plate, 64 - support plate, 7 - connecting piece, 71 - hoop, 72 - second mounting plate, 8 - cushion block. Detailed implementation manners

[0021] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0022] Embodiment 1 Refer to Figure 1 - Figure 2 As shown, a prefabricated building connection structure includes a wall 3, a support beam 2 and a column 1. The bottom of the wall 3 is provided with an insertion block 31, and the support beam 2 is provided with a slot 21 that cooperates with the insertion block 31. The wall 3 and the support beam 2 are inserted and fixed. The column 1 and the support beam 2 are fixed by embedded installation. The support beam 2 is located between two groups of columns 1 and is used to support the wall 3 and disperse the pressure of the wall 3. The connection stability between the wall 3 and the support beam 2 is ensured by the insertion and fixing method.

[0023] As Figure 2 shown, the thickness of the wall 3 is greater than the thickness of the support beam 2. When the insertion block 31 of the wall 3 is inserted into the slot 21 of the support beam 2, the bottom surface of the wall 3 abuts against the upper end surface of the support beam 2, and the part of the bottom of the wall 3 that does not contact the support beam 2 is the exposed surface.

[0024] Continuing as Figure 1 and Figure 2 shown, the wall 3 is provided with an auxiliary connection assembly. The auxiliary connection assembly includes two groups of connecting frames 4 symmetrically arranged along the inner and outer sides of the wall 3. The connecting frames 4 are used to fit on the side wall and the bottom of the wall 3, and the bottom of the connecting frame 4 abuts against the exposed surface at the bottom of the wall 3. The two groups of connecting frames 4 are fixed through the bolt connection holes 43 provided at the top, and the two groups of connecting frames 4 form a frame structure for restricting the wall 3.

[0025] The lifting hole 44 provided at the top of the connecting frame 4 can be connected to a crane. The crane drives the connecting frame 4, and then drives the wall body 3 to be lifted and transported. The lifted wall body 3 is supported by the bottom of the connecting frame 4. By setting the connecting frame 4, lifting can be achieved without pre-burying hooks during the production stage of the wall body 3, reducing subsequent hook treatment steps, protecting the structure of the wall body 3, and saving production costs at the same time.

[0026] After the wall body 3 is hoisted in place, the wall body 3 is inserted into the support cross beam 45. At this time, a detachable diagonal brace assembly 5 can be installed on the connecting frame 4 to support the wall body 3, which is convenient for subsequent fixing and improves safety. Since the diagonal brace assembly 5 is only connected to the connecting frame 4 and does not damage the wall body 3 itself, it is also convenient to disassemble the diagonal brace assembly 5 after use.

[0027] After the wall body 3 is fixed, the connecting frame 4 can be removed and reused. The connecting frame 4 is convenient for disassembly and installation, greatly improving the assembly efficiency.

[0028] In this embodiment, the connecting frame 4 adopts a U-shaped structure. The length of the bottom plate 42 is adapted to the width of the wall body 3, so that the bottom plate 42 can support the entire wall body 3, improving the supporting strength of the bottom plate 42 for the wall body 3. At the same time, two groups of side plates 41 are adopted, and the two groups of side plates 41 are respectively located at both ends of the bottom plate 42, so that the connecting frame 4 forms a square frame structure to better support the wall body 3. The bottom plate 42 and the side plates 41 of the connecting frame 4 are preferably made of integrally connected plates to avoid breakage between the bottom plate 42 and the side plates 41. The plates are made of high-strength steel plates such as high manganese steel and composite sandwich steel to improve the supporting strength of the connecting frame 4 and avoid bending the bottom plate 42 during the process of hoisting the wall body 3.

[0029] Furthermore, a support cross beam 45 is provided between the two groups of side plates 41 to improve the stability and strength of the connecting frame 4. The middle of the support cross beam 45 is also provided with a diagonal brace assembly 5.

[0030] Furthermore, the diagonal brace assembly 5 includes a ball hinge seat 51 and a threaded telescopic sleeve 52. The fixed end of the ball hinge seat 51 is connected to the connecting frame 4 by screws, and the rotating end of the ball hinge seat 51 is connected to one end of the threaded telescopic sleeve 52.

[0031] Through the above technical solution, after the diagonal brace assembly 5 is installed, by rotating the threaded telescopic sleeve 52, the threaded telescopic sleeve 52 is extended, so that one end of the threaded telescopic sleeve 52 abuts against the wall body 3 and the other end abuts against the bottom surface, realizing the support for the wall body 3. At the same time, multiple diagonal brace assemblies 5 can be flexibly set according to the actual situation, and it is convenient and fast to install and remove the diagonal brace assemblies 5 at the same time.

[0032] Such as Figure 1As shown, after the wall 3 is fixed in place, there are protruding steel bars on both sides of the wall 3, and the column 1 is also provided with inserted steel bars. The inserted steel bars of the wall 3 and the column 1 can be fixed through a sleeve, and then the formwork is erected and grouted. At the same time, a grouting hole is provided on one side of the support beam 2 corresponding to the position of the slot 21. Through the grouting hole, the slot 21 can be grouted to fix the slot 21 and the inserted block 31 into one body.

[0033] Embodiment 2 Referring to Embodiment 1 and Figure 3 , the connecting frame 4 in this embodiment is an inverted T-shaped structure. The length of the bottom plate 42 is adapted to the width of the wall 3, and the side plate 41 is located in the middle of the bottom plate 42. The connecting frame 4 in this embodiment is used for hoisting the lightweight wallboard, simplifying the structure of the connecting frame 4 and improving the installation efficiency.

[0034] Embodiment 3 Referring to Embodiment 1 and also referring to Figure 4 - Figure 6 , the connecting frame 4 in this embodiment is a split structure. The connecting frame 4 includes two groups of support angle steels 6 with the same size and specification. The support angle steels 6 are attached to the side edges of the wall 3. A support plate 64 is provided at the bottom of the support angle steel 6. The support plate 64 is located on the exposed surface of the wall 3. A first mounting plate 61 is provided on the side of the support angle steel 6 away from the wall 3.

[0035] Through the above technical solution, the four corners at the bottom of the wallboard are supported by the support plates 64 below the support angle steels 6. At the same time, the four edges of the wall 3 are also protected by the support angle steels 6. The vulnerable parts of the wall 3 can be effectively protected by the support angle steels 6, improving the protection during the hoisting process of the wall 3.

[0036] As Figure 4 shown, the top of the support angle steel 6 protrudes from the wall 3. A bolt hole is provided at the top of the support angle steel 6. Through the bolt hole, two groups of symmetric support angle steels 6 can be connected. At the same time, the sling plate 62 and the connecting plate 63 are also fixed through the bolt hole. The same-side support angle steels 6 are connected through the connecting plate 63, so that the four support angle steels 6 form a whole, improving the stability and strength of the frame. And through the sling plate 62, the connecting frame 4 can be connected to the crane to realize the subsequent hoisting operation.

[0037] As Figure 5 shown, a connecting piece 7 is provided on the column 1. The connecting piece 7 includes a hoop 71 and two groups of second mounting plates 72. The two groups of first mounting plates 61 on one side of the wall 3 are inserted between the corresponding two groups of second mounting plates 72, and the first mounting plates 61 and the second mounting plates 72 are fixed by bolts.

[0038] Through the above technical solution, the supporting angle steel 6 in this embodiment is used to connect the wall body 3 and the column 1, and the supporting angle steel 6 is used as a connecting structure for fixing the wall body 3. When the crane hoists the wall body 3 to the designated position through the supporting angle steel 6, at this time, the first mounting plate 61 of the supporting angle steel 6 is inserted into the socket formed by two second mounting plates 72 on the column 1, and then the first mounting plate 61 and the second mounting plate 72 are fixed by bolts. At this time, the fixing of the wall body 3 and the column 1 is completed. Then, the supporting plate 64 and the sling plate 62 above the supporting angle steel 6 are removed and can be reused. Through the cooperation of the supporting angle steel 6 and the connecting piece 7, the dry connection between the wall body 3 and the column 1 is realized. Of course, in order to improve the strength, grouting can also be carried out in the cavity formed by the second mounting plate 72 and the first mounting plate 61.

[0039] As Figure 6 shown, the first mounting plates 61 on adjacent wall bodies 3 are arranged in a staggered plug-in manner. As Figure 6 shown in A, the distance between the two first mounting plates 61 on one group of wall bodies 3 is greater than the distance between the two first mounting plates 61 on the other group of wall bodies 3. Furthermore, the two groups of wall bodies 3 can be completed with a plug-in structure through the first mounting plates 61 with different distances. As Figure 6 shown in B, the first mounting plates 61 of the two wall bodies 3 are plugged in and then fixed by bolts. Through this structure, the connection strength between adjacent wall bodies 3 can be ensured, and at the same time, the bolt connection method after plugging is highly efficient. Further, in order to further improve the strength, grouting can be carried out in the cavity formed by the first mounting plates 61 between the two wall bodies 3.

[0040] Embodiment 4 A construction method for prefabricated buildings includes the following steps: S1. Pre-embed the column 1 and the supporting beam 2 in advance; S2. As Figure 7 shown, stack the wall bodies 3 transported from the factory horizontally, and there are spacer blocks 8 between the adjacent stacked wall bodies 3; Setting the spacer blocks 8 between the wall bodies 3 can protect against extrusion between adjacent wall bodies 3, avoid damaging the wall surface, and at the same time, through the spacer blocks 8, a space is formed between adjacent wall bodies 3, which is convenient for placing the connecting frames 4 on both the front and back sides of the wall bodies 3.

[0041] S2. Place the connecting frames 4 on both the front and back sides of the wall bodies 3 respectively, so that the connecting frames 4 are in contact with the wall surface and the bottom of the wall bodies 3, and then fix the two-side connecting frames 4 through the bolt connecting pieces 7; When the connecting frame 4 is installed and fixed by bolts, connect the crane with the sling holes 44 of the connecting frame 4 through a steel wire rope. At this time, slowly lift the connecting frame 4 to lift the wall panel. A protective sleeve can be set at the plug block 31 to avoid the plug block 31 from rubbing against the lower part during the process of lifting the wall body 3 and wearing the plug block 31. When the wall body 3 is completely lifted, the protective sleeve can be removed.

[0042] S3. The connecting frame 4 is connected to the crane through the sling holes 44, and the auxiliary connecting assembly and the wall body 3 fixed in the auxiliary connecting assembly are slowly lifted by the crane. Some steel rings can be arranged on the connecting frame 4. The ropes pass through the steel rings, and with the cooperation of the staff below, the ropes are pulled to adjust the deflection of the wall body 3, making it more convenient for the wall body 3 to be positioned.

[0043] S4. Move the wall body 3 to a suitable position above the support beam 2 so that the insertion block 31 is inserted into the insertion slot 21 to complete the fixation of the wall body 3 and the support beam 2. Install the diagonal bracing assemblies 5 on both sides of the wall body 3, and then separate the connecting frame 4 from the crane. S5. If the wall body 3 and the column 1 are wet-connected, refer to Embodiment 1. The corresponding positions on both sides of the wall body 3 and the column 1 are provided with protruding reinforcing bars. Formwork is erected and grouted at the reinforcing bar positions of the wall body 3 and the column 1, and then the diagonal bracing assemblies 5 and the connecting frame 4 are removed. If the wall body 3 and the column 1 are dry-connected, refer to Embodiment 3, and thread-connect or weld the connecting frame 4 to the connector 7 on the column 1. S6. Lift the next wall body 3 through the auxiliary connecting assembly. If the adjacent wall bodies 3 are wet-connected, refer to Embodiment 1, and formwork is erected and grouted at the connection of the adjacent wall bodies 3. If the adjacent wall bodies 3 are dry-connected, refer to Embodiment 4, and thread-connect or weld the connecting frames 4 of the adjacent wall bodies 3. S7. After the wall body 3 is installed, grout the inside of the insertion slot 21 to fix the wall body 3 and the support beam 2.

[0044] The above is only the preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the concept described herein through the above teachings or the technology or knowledge in the relevant field. And any changes and modifications made by those skilled in the art without departing from the spirit and scope of the present invention should fall within the protection scope of the appended claims of the present invention.

Claims

1. An assembled building connection structure, comprising a wall (3), a support beam (2) and a column (1), characterized in that: The bottom of the wall body (3) is provided with inserting blocks (31), the support beam (2) is provided with slots (21) matching with the inserting blocks (31), the wall body (3) is inserted and fixed with the support beam (2), the thickness of the wall body (3) is greater than that of the support beam (2), and the part of the wall body (3) not in contact with the support beam (2) is the exposed surface; The wall body (3) is provided with an auxiliary connection assembly. The auxiliary connection assembly includes two groups of connection frames (4) symmetrically arranged along the inner and outer sides of the wall body (3). The connection frames (4) are used for fitting on the side wall and the bottom of the wall body (3). The top of the connection frame (4) is provided with bolt connection holes (43) and sling holes (44). The two groups of connection frames (4) are connected by bolts. The two groups of connection frames (4) form a frame structure for restricting the wall body (3), and a detachable diagonal brace assembly (5) is arranged in the middle of the connection frame (4).

2. The prefabricated building connection structure according to claim 1, characterized in that: The diagonal brace assembly (5) includes a spherical hinge seat (51) and a threaded telescopic sleeve (52). The fixed end of the spherical hinge seat (51) is connected with the connection frame (4) by screws, and the rotating end of the spherical hinge seat (51) is connected with one end of the threaded telescopic sleeve (52).

3. The prefabricated building connection structure according to claim 2, characterized in that: The connection frame (4) includes a bottom plate (42) and side plates (41). The side plates (41) abut against the wall surface of the wall body (3). The bottom plate (42) is located on the exposed surface of the wall body (3). The length of the side plates (41) is greater than the height of the wall body (3). The bolt connection holes (43) and the sling holes (44) are both located at one end of the side plates (41) extending out of the wall body (3).

4. The prefabricated building connection structure according to claim 3, characterized in that: The connection frame (4) is of a U-shaped structure. The length of the bottom plate (42) is adapted to the width of the wall body (3). The two groups of side plates (41) are respectively located at both ends of the bottom plate (42).

5. The prefabricated building connection structure according to claim 4, characterized in that: A support cross beam (45) is arranged between the two groups of side plates (41), and a diagonal brace assembly (5) is also arranged in the middle of the support cross beam (45).

6. The prefabricated building connection structure according to claim 3, characterized in that: The connection frame (4) is of an inverted T-shaped structure. The length of the bottom plate (42) is adapted to the width of the wall body (3). The side plate (41) is located in the middle of the bottom plate (42).

7. The prefabricated building connection structure according to claim 1, characterized in that: The connection frame (4) is of a split structure. The connection frame (4) includes two groups of support angle steels (6) with the same size specifications. The support angle steels (6) are attached to the side edges of the wall body (3). The bottom of the support angle steels (6) is provided with support plates (64). The support plates (64) are located on the exposed surface of the wall body (3). A first mounting plate (61) is arranged on the side of the support angle steels (6) away from the wall body (3). The first mounting plates (61) on adjacent wall bodies (3) are arranged in a staggered plug-in manner and are connected by bolts.

8. The prefabricated building connection structure according to claim 7, wherein: The top of the support angle steels (6) extends out of the wall body (3). A detachable sling plate (62) and a connection plate (63) are arranged at one end of the support angle steels (6) extending out of the wall body (3). The two groups of support angle steels (6) are connected by the connection plate (63).

9. The prefabricated building connection structure according to claim 7, wherein: The column (1) is provided with a connecting piece (7), and the connecting piece (7) includes a hoop (71) and two sets of second mounting plates (72). The two sets of the first mounting plates (61) on one side of the wall (3) are inserted between the corresponding two sets of second mounting plates (72), and the first mounting plates (61) and the second mounting plates (72) are fixed by bolts.

10. The construction method of the prefabricated building structure according to any one of claims 1-9, characterized in that: The following steps are involved: S1, pre-embed columns (1) and support beams (2); S2, stacking the walls (3) transported from the factory horizontally, with spacers (8) provided between adjacent stacked walls (3); S2. Place the connecting frame (4) on the front and back sides of the wall (3) respectively, so that the connecting frame (4) abuts against the wall surface and the bottom of the wall (3), and then fix the connecting frame (4) on both sides by bolt connectors (7); S3, the connecting frame (4) is connected to the crane through the lifting hole (44), and the auxiliary connecting assembly and the wall (3) fixed in the auxiliary connecting assembly are slowly lifted by the crane; S4, move the wall (3) to a suitable position above the support beam (2), insert the plug (31) into the slot (21) to complete the fixation of the wall (3) and the support beam (2), install the diagonal bracing components (5) on both sides of the wall (3), and then separate the connecting frame (4) from the crane; S5. If the wall (3) and the column (1) are connected by wet connection, extended dowel bars are provided on both sides of the wall (3) and at corresponding positions of the column (1), and formwork is grouting is performed at the dowel bars of the wall (3) and the column (1), and then the diagonal brace assembly (5) and the connecting frame (4) are removed; if the wall (3) and the column (1) are connected by dry connection, the connecting frame (4) is screwed or welded to the connecting piece (7) on the column (1), and then the diagonal brace assembly (5) is removed; S6. Hoist the next wall (3) through the auxiliary connection assembly. If the adjacent walls (3) are wet-connected, formwork is erected and grouting is performed at the connection of the adjacent walls (3); if the adjacent walls (3) are dry-connected, the connecting frames (4) of the adjacent walls (3) are threaded or welded. S7. Grouting is performed in the slot (21) to fix the wall (3) and the support beam (2).

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