Frame type building prefabricated wall structure and its installation method

Abstract

The application relates to the technical field of building wall bodies, and discloses a frame type building prefabricated wall body structure and a mounting method thereof, which comprises a concrete wall body, the bottom of the concrete wall body is a mounting surface, and the mounting surface is provided with a rectangular groove; a plurality of grouting sleeves are uniformly and fixedly connected to the inner wall of the top of the rectangular groove, the outer wall of the top end of the grouting sleeves and the outer wall of the bottom end are respectively provided with a transverse grouting hole and a grouting hole which penetrate through the side wall of the concrete wall body, the bottom end of the grouting sleeves is located in the rectangular groove, and a slurry flowing space is reserved between the grouting sleeves and the mounting surface; a positioning part arranged at the bottom of the concrete wall body comprises a plurality of square blocks which are fixedly connected to the inner side wall of the rectangular groove, a through groove is arranged in the square blocks, a clamping block is slidingly connected to the inside of the through groove, and a support is fixedly connected to the bottom of the clamping block; the scheme realizes the purpose of frame positioning, workers do not need to use visual mirror reflection for reference, the calibration time is shortened, and the mounting efficiency of the concrete wall body is improved.

Description

Technical Field

[0001] This invention relates to the field of building wall technology, and more specifically, to a prefabricated wall structure for frame buildings and its installation method. Background Technology

[0002] Precast walls are complete wall units prefabricated in modern factories using standardized assembly lines. Essentially, they transfer traditional on-site construction processes such as masonry, rebar tying, formwork, concrete pouring, insulation layer installation, and finishing to a controlled industrial environment. These walls typically use high-performance concrete as the base material, with precisely embedded structural steel mesh and various connectors such as grouting sleeves and pre-embedded bolt boxes. Multiple functional layers, such as insulation boards, fireproof and soundproof layers, and exterior wall finishes, are integrated simultaneously during production. Structurally, precast walls can be divided into load-bearing shear walls and non-load-bearing enclosure walls. The former forms a lateral force resisting system through pre-reserved steel bars mechanically connected to the main structure, while the latter relies on elastic joints to connect the frame and achieve thermal deformation compensation; both are widely used.

[0003] During the installation of precast walls, the grouting sleeve needs to be connected to the pre-reserved reinforcing bars on the working surface. Then, grouting is used for sealing. Matching grout is injected through the grouting port. When grout overflows from the drain hole, it must be promptly sealed with a rubber plug. After sealing both the grouting and drain holes, and allowing the grout to fully cure and reach a certain strength, the precast wall integrates seamlessly with the working surface. When verifying the precast wall installation holes on-site using a visual inspection mirror, the operator projects a virtual image of the pre-reserved installation holes at the bottom of the wall onto the mirror using the mirror's reflection principle. This image is then compared with the pre-reserved reinforcing bars on the floor. The actual spatial position of the rib is compared. Due to the lack of standardized constraints on the observation angle of the handheld visual eye in the current operation specifications, the operation process relies entirely on the individual experience of the worker to judge the holding posture of the eyepiece. This results in the formation of an undesigned angle between the eyepiece and the horizontal plane. The angle deviation will cause the optical refraction path to shift, causing a systematic misalignment between the coordinates of the installation hole position shown in the eyepiece and the actual spatial position. Ultimately, this causes the hole reference to fail. At the same time, when errors occur in the use of the visual eyepiece, it is necessary to constantly use a pry bar to adjust the position of the precast wall, which prolongs the operation time and is not conducive to rapid installation. Summary of the Invention

[0004] The purpose of this invention is to provide a prefabricated wall structure for frame buildings and its installation method, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, a prefabricated wall structure for frame buildings is provided, including a concrete wall, wherein the bottom of the concrete wall is an mounting surface and a rectangular groove is provided on the mounting surface.

[0006] The inner wall of the top of the rectangular groove is uniformly and fixedly connected with several grouting sleeves. The outer walls of the top and bottom of the multiple grouting sleeves are respectively provided with grout discharge holes and grouting holes that extend horizontally out of the side wall of the concrete wall. The bottom of the multiple grouting sleeves is located inside the rectangular groove, and a space for grout flow is reserved between them and the installation surface.

[0007] The positioning part located at the bottom of the concrete wall includes several square blocks that are uniformly fixed to the inner side wall of the rectangular groove, with a through groove inside, a locking block that is slidably connected inside the through groove, a bracket fixedly connected to its bottom, a positioning plate fixedly connected to the frame of the bracket, and a square groove located at the bottom of the concrete wall and outside the rectangular groove.

[0008] When the concrete wall is facing down, the locking block, along with the bracket and positioning plate, slides down from the through groove under gravity and extends out of the installation surface to form a positioning end. The positioning end is used to connect the grouting sleeve with the reserved reinforcing bars on the working surface.

[0009] As a further improvement to this technical solution, the internal contours of the multiple through slots are isosceles trapezoids, and the outer contour of the locking block is adapted to the internal contour of the through slot. This is used to control the sliding direction of the locking block after the concrete wall installation surface faces downward and the grouting sleeve is connected to the reserved reinforcing steel on the working surface.

[0010] As a further improvement to this technical solution, the internal dimensions of the square groove are adapted to the external dimensions of the positioning plate, the depth of the square groove is consistent with the thickness of the positioning plate, there is a gap between the bottom of the multiple square blocks and the square groove for the support to be placed inside the rectangular groove, and the edge distance between the square groove and the outer surface of the concrete wall is fifty centimeters.

[0011] As a further improvement to this technical solution, a sealing cylinder is fixedly connected to the top of the grouting sleeve, and a precast end steel bar is inserted into the top of the sealing cylinder. The top of the precast end steel bar is placed inside the concrete wall in advance during the prefabrication stage of the concrete wall.

[0012] A sealing cylinder is used to limit and fix the precast end steel bars, preventing the bottom end of the precast end steel bars from inserting deep into the grouting sleeve.

[0013] As a further improvement to this technical solution, a number of convex rings are uniformly fixedly connected to the inner wall of the grouting sleeve. The multiple convex rings are used to improve the shear resistance performance of the grout injected into the grouting sleeve after solidification.

[0014] As a further improvement to this technical solution, a support ring is fixedly connected to the bottom outer wall of the grouting sleeve, and a cylinder is rotatably connected to the outer wall of the support ring. A guide frustum is provided inside the cylinder, and a ring is fixedly connected to the top of the guide frustum.

[0015] The cylinder is manually rotated, causing the guide platform to rotate via multiple support rods. This causes the inner wall of the guide platform to separate from the bent side of the pre-reserved reinforcing steel on the working surface, and the connection is smoothly completed as the concrete wall continues to fall.

[0016] As a further improvement to this technical solution, the outer wall of the bottom end of the guide frustum is uniformly and fixedly connected with several support rods in a circular array, and the guide frustum is fixedly connected to the inner wall of the cylinder through multiple support rods.

[0017] As a further improvement to this technical solution, the cross-sectional profile of the guide frustum is an isosceles trapezoid, with a wide opening at the bottom and a narrow opening at the top, used to guide the direction of the reserved reinforcing bars on the working surface.

[0018] As a further improvement to this technical solution, two first threaded holes are symmetrically opened on the outer wall of the top end of the concrete wall, and two second threaded holes are symmetrically opened on the outer wall of the bottom end of the concrete wall.

[0019] The second objective of this invention is to provide an installation method for operating a prefabricated wall structure for a frame building, comprising the following steps:

[0020] S1. Use lifting equipment to lift the concrete wall to the area above the working surface. With the cooperation of two or more workers, guide the lifting equipment to suspend the concrete wall above the reserved steel bars on the working surface. By marking fifty lines on the working surface in advance, the outline of the area to be connected on the working surface is revealed.

[0021] S2. When the concrete wall installation surface is facing down, under the action of gravity, the locking block slides down inside the through groove, thereby taking the bracket and positioning plate out from the inside of the rectangular groove. By lowering the height of the lifting equipment, the edge of the positioning plate finally coincides with the inner contour of the fifty lines marked on the working surface.

[0022] S3. After the concrete wall is connected to the pre-reserved steel bars on the working surface through the positioning end, the long inclined support rod is connected to the first threaded hole, and the short inclined support rod is connected to the second threaded hole to prevent the concrete wall from tilting. Then, by continuously grouting the inside of the grouting sleeve, it is ensured that the rectangular groove and all the gaps inside the grouting sleeve are filled with grout.

[0023] S4. As the grout overflows from the grout drain hole, the drain hole can be sealed with a rubber stopper. Repeat the above steps to grout multiple grouting sleeves in sequence. After the grout has completely solidified, a firm bond is achieved between the concrete wall and the working floor.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] 1. By setting up a positioning part and marking 50 lines on the working surface beforehand, the outline of the area to be connected on the working surface is exposed. When the concrete wall installation surface is facing down, the locking block slides down inside the through groove under the action of gravity, thereby bringing the bracket and positioning plate out from the inside of the rectangular groove. This makes the edge of the positioning plate coincide with the inner outline of the 50 lines marked on the working surface, achieving the purpose of edge positioning. There is no need for workers to use a visual mirror for reference, shortening the calibration time and improving the installation efficiency of the concrete wall. After the concrete wall is placed on the working surface, the locking block slides upward in the through groove, so that the positioning plate is located inside the square groove and is at the same level as the bottom of the concrete wall, thus not affecting the subsequent grouting operation.

[0026] 2. By setting up a support ring, a cylinder, and a guide frustum, the cylinder is manually rotated, causing the cylinder to rotate along with the guide frustum via multiple support rods. This causes the inner wall of the guide frustum to separate from the bent side of the pre-reserved steel bar on the working surface. As the concrete wall continues to fall, the connection is smoothly completed. At the same time, the ring can be used to limit the pre-reserved steel bar on the working surface that enters the grouting sleeve through the guide frustum, ensuring that the pre-reserved steel bar on the working surface is inserted along the central axis area of ​​the grouting sleeve. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the bottom mounting surface of the concrete wall according to the present invention;

[0029] Figure 3 This is a three-dimensional sectional view of the concrete wall structure of the present invention;

[0030] Figure 4 This is a partial cross-sectional view of the three-dimensional structure of the positioning part of the present invention;

[0031] Figure 5 This is a partial sectional side view of the three-dimensional structure of the positioning part of the present invention;

[0032] Figure 6 This is a three-dimensional structural diagram of the relevant components at the positioning plate of the present invention;

[0033] Figure 7 For the present invention Figure 6 Enlarged schematic diagram of the three-dimensional structure at point A in the middle;

[0034] Figure 8 This is a schematic diagram of the three-dimensional structure of the grouting sleeve of the present invention;

[0035] Figure 9 This is a three-dimensional structural diagram of the relevant components at the guide frustum of the present invention;

[0036] Figure 10This is a three-dimensional sectional view of the grouting sleeve structure of the present invention;

[0037] Figure 11 This is a three-dimensional structural cross-sectional view of the grouting sleeve and the pre-reserved reinforcing bars on the working surface in the present invention.

[0038] The meanings of the labels in the diagram are as follows:

[0039] 1. Concrete wall; 11. Rectangular groove; 2. Grouting sleeve; 21. Grout discharge hole; 22. Grouting hole; 3. Precast end reinforcement; 31. First threaded hole; 32. Second threaded hole; 4. Positioning part; 41. Block; 42. Through groove; 43. Locking block; 44. Bracket; 45. Positioning plate; 46. Square groove; 51. Sealing cylinder; 52. Convex ring; 61. Support ring; 62. Cylinder; 63. Guide frustum; 64. Support rod; 65. Circular ring. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Example 1

[0042] Please see Figures 1-11 As shown, the purpose of this embodiment is to provide a prefabricated wall structure for a frame building, including a concrete wall 1, the bottom of the concrete wall 1 being an installation surface, and the installation surface having a rectangular groove 11.

[0043] A number of grouting sleeves 2 are uniformly and fixedly connected through the inner wall of the top of the rectangular groove 11. The outer walls of the top and bottom of the multiple grouting sleeves 2 are respectively provided with grout discharge holes 21 and grouting holes 22 that extend horizontally through the side wall of the concrete wall 1. The bottom of the multiple grouting sleeves 2 are located inside the rectangular groove 11, and a space for grout flow is reserved between them and the installation surface. By connecting the grouting sleeves 2 with the reserved steel bars on the working surface, the concrete wall 1 can be installed smoothly. Then, the grouting equipment and the pipe are inserted into the grouting hole 22. By continuously grouting the inside of the grouting sleeves 2, the rectangular groove 11 and the entire gap inside the grouting sleeves 2 are filled with grout. At the same time, as the grout overflows from the grout discharge hole 21, the grout discharge hole 21 can be sealed with a rubber stopper. The above steps are repeated to grout the multiple grouting sleeves 2 in turn. After the grout has completely solidified, the concrete wall 1 and the working surface floor are firmly bonded.

[0044] The positioning part 4 located at the bottom of the concrete wall 1 includes several square blocks 41 that are uniformly fixedly connected to the inner side wall of the rectangular groove 11, a through groove 42 is opened inside the block 41, a locking block 43 is slidably connected inside the through groove 42, a bracket 44 is fixedly connected to the bottom of the block 43, a positioning plate 45 is fixedly connected to the frame of the bracket 44, and a square groove 46 is opened at the bottom of the concrete wall 1 and located outside the rectangular groove 11.

[0045] When the concrete wall 1 is facing down, the clip 43, along with the bracket 44 and the positioning plate 45, slides down from the inside of the through groove 42 under the action of gravity and extends out of the installation surface to form a positioning end. The positioning end is used to connect the grouting sleeve 2 with the reserved steel bars on the working surface.

[0046] Multiple through slots 42 have an internal contour of isosceles trapezoid. The outer contour of the locking block 43 matches the internal contour of the through slot 42. The square block 41, locking block 43, bracket 44, and positioning plate 45 are all made of concrete and are cast in molds during the prefabrication stage of the concrete wall 1. They are used to control the sliding direction of the locking block 43 after the installation surface of the concrete wall 1 is facing down and after the grouting sleeve 2 is connected to the reserved steel bars on the working surface. The internal dimensions of the square slot 46 match the external dimensions of the positioning plate 45, and the depth of the square slot 46 is the same as the thickness of the positioning plate 45. There is a gap between the bottom of the multiple square blocks 41 and the square slot 46 for the bracket 44 to be placed inside the rectangular slot 11. The edge distance between the square slot 46 and the outer surface of the concrete wall 1 is fifty centimeters. When the installation surface of the concrete wall 1 is facing down, under the action of gravity, the locking block 43 slides down inside the through slot 42, thereby taking the bracket 44 and positioning plate 45 out from inside the rectangular slot 11 for subsequent connection with the reserved steel bars on the working surface. The positioning sleeve 45 serves as a reference for the rebar connection. After the grouting sleeve 2 is connected to the rebar on the working surface, the concrete wall 1 will fall onto the working surface. This causes the positioning plate 45 and the bracket 44 to be pushed by the working surface and slide upward in the through groove 42 with the cooperation of the locking block 43. Finally, the positioning plate 45 is located inside the square groove 46. Since the surface of the bracket 44 is in contact with the bottom of the block 41, when the positioning plate 45 is inside the square groove 46, the bottom of the positioning plate 45 and the bottom of the concrete wall 1 are on the same horizontal plane. This does not affect the subsequent sealing of the gap between the concrete wall 1 and the working surface, or the grouting of the grouting sleeve 2 through the grouting hole 22. Furthermore, since the distance between the outer surface of the concrete wall 1 and the edge of the square groove 46 is 50 centimeters and is consistent with the diameter of the 50-line commonly used in construction, the positioning plate 45 can achieve the purpose of positioning when its frame coincides with the inner contour of the 50-line marked on the working surface. This eliminates the need for workers to use a visual mirror for reference, thus improving the installation efficiency of the concrete wall 1.

[0047] A sealing cylinder 51 is fixedly connected to the top of the grouting sleeve 2. A precast end steel bar 3 is inserted into the top of the sealing cylinder 51. The sealing cylinder 51 is used to limit and fix the precast end steel bar 3, preventing the bottom end of the precast end steel bar 3 from inserting deep into the grouting sleeve 2. The top end of the precast end steel bar 3 is placed inside the concrete wall 1 in advance during the prefabrication stage of the concrete wall 1. Several protruding rings 52 are evenly fixedly connected to the inner side wall of the grouting sleeve 2. The multiple protruding rings 52 are used to improve the shear resistance performance of the grout injected into the grouting sleeve 2 after solidification. The multiple protruding rings 52 are used to divide the internal space of the grouting sleeve 2, reduce the internal stress generated when subjected to transverse shear force, and improve stability.

[0048] A support ring 61 is fixedly connected to the bottom outer wall of the grouting sleeve 2. A cylinder 62 is rotatably connected to the outer wall of the support ring 61. A guide frustum 63 is set inside the cylinder 62. A ring 65 is fixedly connected to the top of the guide frustum 63. Several support rods 64 are evenly fixedly connected to the bottom outer wall of the guide frustum 63 in a circular array. The guide frustum 63 is fixedly connected to the inner wall of the cylinder 62 through multiple support rods 64. The cross-sectional profile of the guide frustum 63 is an isosceles trapezoid, with a wide opening at the bottom and a narrow opening at the top. It is used to guide the direction of the pre-reserved steel bars on the working surface. When the pre-reserved steel bars on the working surface are inserted into the guide frustum 63, the opening between the bottom of the grouting sleeve 2 and the pre-reserved steel bars on the working surface is enlarged, which can guide the inserted steel bars without the need for reverse... After readjusting the state of the pre-reserved steel bars on the working surface, the concrete wall 1 can be dropped directly. When the top of the pre-reserved steel bars on the working surface is slightly bent, an abnormal noise will be heard during the drop of the concrete wall 1 due to the friction between the guide platform 63 and the steel bars. By inserting your hand through the middle area of ​​the support 44 and manually rotating the cylinder 62, the cylinder 62 will rotate with the guide platform 63 through multiple support rods 64. This will cause the inner wall of the guide platform 63 to separate from the bent side of the pre-reserved steel bars on the working surface. As the concrete wall 1 continues to drop, the connection will be completed smoothly. The ring 65 can play a ring-shaped limiting role for the pre-reserved steel bars on the working surface that enter the grouting sleeve 2 through the guide platform 63, ensuring that the pre-reserved steel bars on the working surface are inserted along the central axis area of ​​the grouting sleeve 2.

[0049] Two first threaded holes 31 are symmetrically opened on the outer wall of the top end of the concrete wall 1, and two second threaded holes 32 are symmetrically opened on the outer wall of the bottom end of the concrete wall 1. The diagonal supports used on the construction site to support the concrete wall 1 and keep it stable after installation are divided into long rods and short rods. By connecting the long rods to the first threaded holes 31, the verticality of the concrete wall 1 is adjusted. The short rods are connected to the second threaded holes 32 to adjust the horizontal position of the concrete wall 1, thereby preventing the concrete wall 1 from tilting. A concrete wall 1 of a standard size requires four diagonal supports, two long and two short. If the concrete wall 1 is small and the positioning accuracy is high, one short rod can be used instead.

[0050] The second objective of this invention is to provide an installation method for operating the aforementioned prefabricated wall structure of a frame building, comprising the following steps:

[0051] S1. Use lifting equipment to lift the concrete wall 1 to the area above the working surface. With the cooperation of two or more workers, guide the lifting equipment to suspend the concrete wall 1 above the reserved steel bars on the working surface. By marking fifty lines on the working surface in advance, the outline of the area to be connected on the working surface is revealed.

[0052] S2. When the concrete wall 1 is facing down, under the action of gravity, the locking block 43 slides down inside the through groove 42, thereby taking the bracket 44 and the positioning plate 45 out from the inside of the rectangular groove 11. By lowering the height of the lifting equipment, the edge of the positioning plate 45 finally coincides with the inner contour of the fifty lines marked on the working surface.

[0053] S3. After the concrete wall 1 is connected to the pre-reserved steel bar on the working surface through the positioning end, the long inclined support rod is connected to the first threaded hole 31, and the short inclined support rod is connected to the second threaded hole 32 to prevent the concrete wall 1 from tilting. Then, by continuously grouting the inside of the grouting sleeve 2, it is ensured that the rectangular groove 11 and all the gaps inside the grouting sleeve 2 are filled with grout.

[0054] S4. As the grout overflows from the grout drain hole 21, the grout drain hole 21 can be sealed with a rubber stopper. The above steps are repeated to grout multiple grouting sleeves 2 in sequence. After the grout has completely solidified, a firm bond is achieved between the concrete wall 1 and the working floor.

[0055] During work:

[0056] Using lifting equipment, the concrete wall 1 is lifted to the working surface. With the cooperation of two or more workers, the lifting equipment is guided to suspend the concrete wall 1 above the pre-reserved reinforcing bars on the working surface. Fifty lines are pre-marked on the working surface to reveal the outline of the area to be joined. The lifting equipment is then slowly lowered to the desired height. When the installation surface of the concrete wall 1 is facing down, gravity causes the locking block 43 to slide downwards inside the through groove 42, thus extending the bracket 44 and positioning plate 45 from inside the rectangular groove 11. These serve as reference positions for subsequent joining with the pre-reserved reinforcing bars on the working surface. After the grouting sleeve 2 is joined with the reinforcing bars on the working surface, the concrete wall 1 falls to the working surface, causing the positioning plate 45 and bracket 44 to be pushed by the working surface. The positioning plate 45 slides upward in the through groove 42 with the cooperation of the locking block 43, and finally places the positioning plate 45 inside the square groove 46. Since the surface of the bracket 44 is in contact with the bottom of the block 41, when the positioning plate 45 is inside the square groove 46, the bottom of the positioning plate 45 is at the same level as the bottom of the concrete wall 1. This does not affect the subsequent sealing of the gap between the concrete wall 1 and the working surface, or the grouting of the grouting sleeve 2 through the grouting hole 22. Since the distance between the outer surface of the concrete wall 1 and the edge of the square groove 46 is 50 centimeters and is consistent with the diameter of the 50-line commonly used in construction, the positioning plate 45 can achieve the purpose of positioning when the frame coincides with the inner contour of the 50-line marked on the working surface. This eliminates the need for workers to use a visual mirror for reference, shortens the calibration time, and improves the installation efficiency of the concrete wall 1.

[0057] When the pre-reserved steel bar on the working surface is inserted into the guide frustum 63, the opening between the bottom of the grouting sleeve 2 and the pre-reserved steel bar on the working surface is enlarged to guide the inserted steel bar. There is no need to repeatedly adjust the state of the pre-reserved steel bar on the working surface; the concrete wall 1 can be allowed to fall directly. When the top of the pre-reserved steel bar on the working surface is slightly bent, an abnormal noise is heard during the fall of the concrete wall 1 caused by the friction between the guide frustum 63 and the steel bar. By inserting a hand through the middle area of ​​the support 44 and manually rotating the cylinder 62, the cylinder 62 rotates with the guide frustum 63 through multiple support rods 64, causing the guide frustum 63 to separate from the bent side of the pre-reserved steel bar on the working surface. As the concrete wall 1 continues to fall, the connection is completed smoothly. The ring 65 can play a ring-shaped limiting role for the pre-reserved steel bar on the working surface that enters the grouting sleeve 2 through the guide frustum 63, ensuring that the pre-reserved steel bar on the working surface is inserted along the central axis area of ​​the grouting sleeve 2.

[0058] After the concrete wall 1 is installed on the working surface, the long rod is connected to the first threaded hole 31 and the short rod is connected to the second threaded hole 32 to prevent the concrete wall 1 from tilting and improve stability. Then, the grouting equipment and the pipe are inserted into the grouting hole 22. By continuously grouting the inside of the grouting sleeve 2, the rectangular groove 11 and all the gaps inside the grouting sleeve 2 are filled with grout. At the same time, as the grout overflows from the grout drain hole 21, the grout drain hole 21 can be sealed with a rubber stopper. The above steps are repeated to grout multiple grouting sleeves 2 in sequence. After the grout has completely solidified, a firm bond is achieved between the concrete wall 1 and the working surface floor.

[0059] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A precast wall structure for frame buildings, comprising concrete walls (1), characterized in that: The bottom of the concrete wall (1) is the mounting surface, and the mounting surface is provided with a rectangular groove (11). The inner wall of the top of the rectangular groove (11) is uniformly connected with several grouting sleeves (2). The outer walls of the top and bottom of the multiple grouting sleeves (2) are respectively provided with grout discharge holes (21) and grouting holes (22) that extend horizontally through the side wall of the concrete wall (1). The bottom of the multiple grouting sleeves (2) is located inside the rectangular groove (11), and a space for grout flow is reserved between them and the installation surface. The positioning part (4) located at the bottom of the concrete wall (1) includes several square blocks (41) uniformly fixedly connected to the inner side wall of the rectangular groove (11), a through groove (42) opened inside the block, a locking block (43) slidably connected inside the through groove (42), a bracket (44) fixedly connected to the bottom of the block, a positioning plate (45) fixedly connected to the frame of the bracket (44), and a square groove (46) opened at the bottom of the concrete wall (1) and located outside the rectangular groove (11). When the concrete wall (1) is facing down, the card block (43) with the bracket (44) and the positioning plate (45) slides down from the inside of the through groove (42) under the action of gravity and extends out of the installation surface to form a positioning end. The positioning end is used to connect the grouting sleeve (2) with the reserved steel bars on the working surface.

2. The prefabricated wall structure for frame buildings according to claim 1, characterized in that: The inner contour of the multiple through slots (42) is an isosceles trapezoid, and the outer contour of the locking block (43) is adapted to the inner contour of the through slot (42). It is used to control the sliding direction of the locking block (43) when the concrete wall (1) is facing down and after the grouting sleeve (2) is connected to the reserved steel bar on the working surface.

3. The prefabricated wall structure for framed buildings according to claim 1, characterized in that: The internal dimensions of the square groove (46) are adapted to the external dimensions of the positioning plate (45), the depth of the square groove (46) is consistent with the thickness of the positioning plate (45), there is a gap between the bottom of the multiple blocks (41) and the square groove (46) for the support (44) to be placed inside the rectangular groove (11), and the edge distance between the square groove (46) and the outer surface of the concrete wall (1) is fifty centimeters.

4. The prefabricated wall structure for framed buildings according to claim 1, characterized in that: The top of the grouting sleeve (2) is fixedly connected to a sealing cylinder (51), and a precast end steel bar (3) is inserted into the top of the sealing cylinder (51). The top of the precast end steel bar (3) is placed inside the concrete wall (1) in advance during the prefabrication stage of the concrete wall (1).

5. The prefabricated wall structure for framed buildings according to claim 1, characterized in that: The inner wall of the grouting sleeve (2) is uniformly fixed with several protruding rings (52), and the multiple protruding rings (52) are used to improve the shear resistance performance of the grout injected into the grouting sleeve (2) after solidification.

6. The prefabricated wall structure for framed buildings according to claim 1, characterized in that: The bottom outer wall of the grouting sleeve (2) is fixedly connected to a support ring (61), and the outer wall of the support ring (61) is rotatably connected to a cylinder (62). A guide frustum (63) is provided inside the cylinder (62), and a ring (65) is fixedly connected to the top of the guide frustum (63).

7. The prefabricated wall structure for framed buildings according to claim 6, characterized in that: The bottom outer wall of the guide frustum (63) is uniformly fixedly connected with several support rods (64) in a ring array, and the guide frustum (63) is fixedly connected to the inner wall of the cylinder (62) through multiple support rods (64).

8. The prefabricated wall structure for framed buildings according to claim 7, characterized in that: The guide frustum (63) has an isosceles trapezoidal cross-section. The bottom of the guide frustum (63) is wide and the top is narrow, which is used to guide the direction of the reserved reinforcing bars on the working surface.

9. The prefabricated wall structure for framed buildings according to claim 1, characterized in that: The top outer wall of the concrete wall (1) has two first threaded holes (31) symmetrically opened, and the bottom outer wall of the concrete wall (1) has two second threaded holes (32) symmetrically opened.

10. An installation method for operating a prefabricated wall structure for a frame building as described in any one of claims 1-9, characterized in that: The methods and steps include the following: S1. Use lifting equipment to lift the concrete wall (1) to the area above the working surface. With the cooperation of two or more workers, guide the lifting equipment to suspend the concrete wall (1) above the reserved steel bars on the working surface. By marking fifty lines on the working surface in advance, the outline of the area to be connected on the working surface is revealed. S2. When the concrete wall (1) is facing down, under the action of gravity, the card block (43) slides down inside the through groove (42), thereby taking the bracket (44) and the positioning plate (45) out from inside the rectangular groove (11). By lowering the height of the lifting equipment, the edge of the positioning plate (45) finally coincides with the inner contour of the fifty lines marked on the working surface. S3. After the concrete wall (1) is connected to the pre-reserved steel bar on the working surface through the positioning end, the long rod of the inclined support is connected to the first threaded hole (31), and the short rod of the inclined support is connected to the second threaded hole (32) to prevent the concrete wall (1) from tilting. Then, by continuously grouting the inside of the grouting sleeve (2), it is ensured that the rectangular groove (11) and all the gaps inside the grouting sleeve (2) are filled with grout. S4. As the grout overflows from the grout drain hole (21), the grout drain hole (21) is sealed with a rubber stopper. The above steps are repeated in sequence to grout multiple grouting sleeves (2). After the grout has completely solidified, the concrete wall (1) and the working floor are firmly bonded.

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