Novel sleeve-free grouting prefabricated shear wall and implementation method thereof

Abstract

The invention relates to the technical field of building construction, in particular to a novel sleeve-free grouting prefabricated shear wall and an implementation method thereof.The novel sleeve-free grouting prefabricated shear wall is characterized in that reserved vertical steel bars are arranged on a prefabricated shear wall body, and key grooves and reserved vibrating through holes are formed in the prefabricated shear wall body; reinforcing ribs and an upper supporting plate are arranged on the supporting legs; the prefabricated shear wall has the beneficial effects that concrete is poured into the constraint edge and flows into the key groove and the through groove formed in the side face of the prefabricated shear wall body, the combination degree of the concrete and the prefabricated shear wall body is ensured, and the overall stability of the structure is enhanced; the concrete is ensured to flow compactly by using a vibrating rod to vibrate at the reserved vibrating through hole, so that the sleeve-free grouting connection effect is realized, the overall stability of the prefabricated structure is enhanced, the construction process is simplified, the workload is reduced, the construction progress is obviously accelerated, and the labor force is saved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a novel sleeve-free grouting prefabricated shear wall and a realization method thereof. Background Art

[0002] Develop new construction methods, increase policy support, and strive to use about 10 years to make the proportion of prefabricated buildings in new buildings reach 30%. In addition, the Ministry of Housing and Urban-Rural Development notified and required all localities to actively promote green affordable housing work, and at the same time issued the "Technical Guidelines for Green Affordable Housing", which clearly stated that all localities should study and formulate local green affordable housing technical policies based on this and provide technical guidance.

[0003] Steel bar connection technology is one of the key technologies of prefabricated buildings. A stable connection is an important guarantee for the integrity and earthquake resistance of the structure. Sleeve grouting connection is one of the main connection methods currently used in prefabricated structures.

[0004] However, these methods have the following defects: 1. If the grouting inside the sleeve is not full due to leakage, insufficient grouting, etc., the prefabricated structure connection will not achieve the expected performance, which will bring structural safety hazards; 2. The grouting sleeve increases the workload of the prefabricated project. For this reason, the present invention proposes a new sleeve-free grouting prefabricated shear wall and its implementation method to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a novel sleeve-free grouting prefabricated shear wall and a method for realizing the same, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a novel sleeve-free grouting prefabricated shear wall, comprising a prefabricated shear wall body, on which are arranged reserved vertical steel bars, high-strength stud bolts, reserved parts and reserved horizontal stirrups, the prefabricated shear wall body being provided with key slots, reserved vibration through holes, upper grouting holes and through grooves, and legs being arranged at the bottom of the prefabricated shear wall body, and connecting holes and square grooves being arranged on the sides of the legs;

[0007] The legs are provided with reinforcing ribs and an upper supporting plate.

[0008] Preferably, the reserved vertical steel bars and reserved horizontal stirrups are embedded and installed on the prefabricated shear wall body, and a reserved part is embedded on the prefabricated shear wall body. The threaded hole provided on the reserved part is threadedly connected to one end of a high-strength stud bolt.

[0009] Preferably, a side baffle is fixedly connected to the side of the prefabricated shear wall body, the side baffle is a right-angled triangular plate structure, side grouting holes are reserved on the side baffle, the side grouting holes are a circular groove structure, and plugs are stuck in the side grouting holes.

[0010] Preferably, the reserved vibration through hole has a circular hole structure, the reserved vibration through hole runs through the entire prefabricated shear wall body, and a key groove is reserved on the side of the reserved vibration through hole, and the key groove has a square groove structure.

[0011] Preferably, one end of the support leg is embedded in the prefabricated shear wall body, a hoisting hole is reserved on the upper surface of the prefabricated shear wall body, an embedded part is arranged in the hoisting hole, and both ends of the embedded part are embedded in the prefabricated shear wall body.

[0012] Preferably, a connecting hole and a square groove are provided on the side of the leg. The square groove has a square groove-like structure. A reinforcing rib is arranged in the square groove. One end of the reinforcing rib is fixedly connected to the leg and the other end is fixedly connected to the upper support plate. The upper support plate has a square plate-like structure and is fixedly connected to the leg.

[0013] Preferably, a side fixing plate is fixedly connected to the side of the leg, the side fixing plate is a square plate structure, the side fixing plate is in contact with the upper surface of the bottom support plate, the bottom support plate is an "L"-shaped plate structure, and a clamping block is fixedly connected to one side of the bottom support plate.

[0014] Preferably, the upper grouting hole is in a square groove-like structure, the upper grouting hole is connected with a through groove reserved in the prefabricated shear wall body, the through groove is in a square groove-like structure, and the through groove is connected with the key groove.

[0015] Preferably, the clamping block is a square plate-shaped structure, one end of the clamping block is clamped in the square groove, and the fastening bolt on the clamping block is threadedly connected to the fastening nut in the installation groove opened on the support leg, and the fastening nut is fixedly connected to the support leg.

[0016] A novel method for realizing a sleeve-free grouting prefabricated shear wall comprises the following steps:

[0017] S1: Component production uses customized steel molds to ensure accurate reservation of steel bars, keyways, legs, upper grouting holes, and through slots;

[0018] S2: Installation, roughening of the wall surface to increase the concrete bonding capacity, hoisting of the prefabricated shear wall body, fixing of the diagonal brace, reserved first-level extrusion sleeve connection of vertical steel bars, and reserved horizontal stirrups for binding to complete the installation;

[0019] S3: Sealing the formwork. The horizontal zone at the root of the prefabricated shear wall body can be sealed with a wooden formwork, and concrete can be poured. Use a vibrating rod to fully vibrate from the reserved vibration through holes to ensure that the concrete flows densely.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention proposes a novel sleeve-free grouting prefabricated shear wall and its realization method, which connects the reserved vertical steel bars with the primary extruded sleeve, and connects the reserved horizontal stirrups with the constraint edge by binding, and then closes the horizontal belt at the root of the prefabricated shear wall body through a wooden formwork, pours concrete into the constraint edge, and the concrete flows into the key slot and the through slot arranged on the side of the prefabricated shear wall body, which ensures the bonding degree between the concrete and the prefabricated shear wall body, enhances the overall stability of the prefabricated structure, and in the pouring process, the poured concrete will be along the chamfer on the prefabricated shear wall body. Flowing into its bottom, cooperating with injecting concrete through the reserved vibration through hole and using the vibrating rod to fully vibrate to ensure that the concrete flows densely, the sleeve-free grouting connection effect is achieved through the above, which is convenient for personnel to use in practice. The other end of the reinforcement rib fixedly connected on the leg is fixedly connected to the upper support plate, and the prefabricated shear wall body is supported by the upper support plate and the leg to enhance the overall stability of the prefabricated structure. It not only simplifies the construction process and reduces the workload, but also significantly speeds up the construction progress and saves labor, so that the staff can operate more efficiently and conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 for Figure 1 The enlarged structural diagram at A in the middle;

[0024] Figure 3 for Figure 1 The enlarged structural diagram at B in the middle;

[0025] Figure 4 for Figure 1 The enlarged structural diagram at C in the middle;

[0026] Figure 5 It is a schematic diagram of the local structure of the present invention;

[0027] Figure 6 for Figure 5 The enlarged structural diagram at D in the middle;

[0028] Figure 7 for Figure 5 Enlarged structural diagram at E in the middle.

[0029] In the figure: 1. Prefabricated shear wall body; 2. Reserved horizontal stirrups; 3. Keyway; 4. Reserved vertical reinforcement; 5. Reserved vibration through-holes; 6. Upper grouting holes; 7. Lifting holes; 8. Embedded parts; 9. Legs; 10. Side baffles; 11. Side grouting holes; 12. Plugs; 13. Connection holes; 14. Square grooves; 15. Side fixing plates; 16. Reinforcement ribs; 17. Upper support plate; 18. Bottom support plate; 19. Blocks; 20. Fastening bolts; 21. Reserved parts; 22. High-strength stud bolts; 23. Through grooves; 24. Mounting grooves; 25. Fastening nuts. DETAILED DESCRIPTION

[0030] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Embodiment 1

[0032] See also Figures 1 to 7 The present invention provides a technical solution: a new type of sleeve-free grouting prefabricated shear wall, comprising a prefabricated shear wall body 1, on which are arranged reserved vertical steel bars 4, high-strength stud bolts 22, reserved parts 21 and reserved horizontal stirrups 2, the prefabricated shear wall body 1 is provided with a keyway 3, a reserved vibration through hole 5, an upper grouting hole 6 and a through groove 23, a leg 9 is arranged at the bottom of the prefabricated shear wall body 1, and a connecting hole 13 and a square groove 14 are arranged on the side of the leg 9; the leg 9 is provided with a reinforcing rib 16 and an upper support plate 17, an implementation method, including the new type of sleeve-free grouting prefabricated shear wall;

[0033] During specific use, the reserved vertical steel bars 4 are connected to the primary extrusion sleeve reserved on the ground, the reserved horizontal stirrups 2 are tied and connected to the constraint edge, concrete is poured into the constraint edge, and the bottom of the prefabricated shear wall body 1 is brought out together, thereby achieving a sleeve-free grouting connection effect, and the horizontal belt of the wall root is cast and vibrated through the reserved vibration through hole 5, thereby achieving a sleeve-free grouting connection effect.

[0034] Embodiment 2

[0035] On the basis of the first embodiment, in order to realize the sleeve-free grouting connection, a leg 9 is provided, one end of the leg 9 is pre-embedded and installed in the prefabricated shear wall body 1, a hoisting hole 7 is reserved on the upper surface of the prefabricated shear wall body 1, and an embedded part 8 is provided in the hoisting hole 7. Both ends of the embedded part 8 are pre-embedded and installed in the prefabricated shear wall body 1, and the connecting buckle at one end of the hoisting device is inserted into the hoisting hole 7 and connected with the embedded part 8. The reserved vertical steel bars 4 and the reserved horizontal stirrups 2 are pre-embedded and installed on the prefabricated shear wall body 1. The prefabricated shear wall body 1 is pre-embedded with a reserved part 21, and the threaded hole opened on the reserved part 21 is connected to the high-strength One end of the stud bolt 22 is threadedly connected, and the prefabricated shear wall body 1 is hoisted to connect the reserved vertical steel bars 4 fixedly connected on the prefabricated shear wall body 1 with the first-level extrusion sleeve fixedly connected on the ground, and the upper end of the sleeve is slowly extruded to complete the connection of the entire extrusion sleeve, and then the reserved horizontal stirrups 2 are tied and connected with the constraint edge, and the prefabricated shear wall body 1 is pre-fixed, and then one end of the high-strength stud bolt 22 is threadedly connected with the threaded hole provided on the pre-buried reserved part 21 on the prefabricated shear wall body 1, and then the other end of the high-strength stud bolt 22 can be connected to the oblique support assembly and fixed by a nut;

[0036] The upper grouting hole 6 is a square groove-shaped structure, and the upper grouting hole 6 is connected with the through groove 23 reserved in the prefabricated shear wall body 1. The through groove 23 is a square groove-shaped structure, and the through groove 23 is connected with the key groove 3. The staff first closes the root horizontal belt of the prefabricated shear wall body 1 with a wooden mold, and casts the constraint edge in layers. After the constraint edge on one side of the wall body is cast, the constraint edge on the other side is cast. During the casting process, part of the concrete will flow into the key groove 3 and the through groove 23 set on the prefabricated shear wall body 1, ensuring the bonding degree of the concrete and enhancing the overall stability of the prefabricated structure. The staff can cast and vibrate into the through groove 23 through the upper grouting hole 6 to avoid the appearance of cavity parts in the key groove 3 and the through groove 23, ensuring the bonding degree of the concrete and enhancing the overall stability of the prefabricated structure.

[0037] A side baffle 10 is fixedly connected to the side of the prefabricated shear wall body 1. The side baffle 10 is a right-angled triangular plate-shaped structure. A side grouting hole 11 is reserved on the side baffle 10. The side grouting hole 11 is a circular groove-shaped structure. A plug 12 is stuck in the side grouting hole 11. The side baffle 10 and the prefabricated shear wall body 1 are made of the same material. The side baffle 10 is fixedly connected to the prefabricated shear wall body 1. The positive corner of the bottom of the prefabricated shear wall body 1 is chamfered. During the pouring process, the poured concrete will be chamfered to improve the fluidity of the concrete, so that the concrete flows into the bottom of the prefabricated shear wall body 1. After pouring, the plug 12 can be removed to continue to inject concrete into the bottom of the prefabricated shear wall body 1 through the side grouting hole 11 to ensure that the root concrete is poured densely;

[0038] The reserved vibration through hole 5 is a circular hole structure, and the reserved vibration through hole 5 runs through the entire prefabricated shear wall body 1. A key groove 3 is reserved on the side of the reserved vibration through hole 5, and the key groove 3 is a square groove structure. The staff can inject concrete through the reserved vibration through hole 5 and use a vibrating rod to fully vibrate to ensure that the concrete flows densely. Through the cooperation of the above structures and the enhancement of the overall stability of the prefabricated structure, not only the construction process is simplified and the workload is reduced, but also the construction progress is significantly accelerated and labor is saved, so that the staff can operate more efficiently and conveniently.

[0039] Embodiment 3

[0040] On the basis of the second embodiment, in order to improve the stability of the whole structure, a leg 9 is provided, a connection hole 13 and a square groove 14 are provided on the side of the leg 9, the square groove 14 is a square groove structure, a reinforcing rib 16 is provided in the square groove 14, one end of the reinforcing rib 16 is fixedly connected to the leg 9 and the other end is fixedly connected to the upper support plate 17, the upper support plate 17 is a square plate structure, the upper support plate 17 is fixedly connected to the leg 9, the upper surface of the upper support plate 17 is in contact with the bottom surface of the prefabricated shear wall body 1, and the upper support plate 17 cooperates with the reinforcing rib 16 fixedly connected to the upper support plate 17 to effectively improve the stability of the prefabricated shear wall body 1 when it is installed on the ground;

[0041] The side of the leg 9 is fixedly connected with a side fixing plate 15, which is a square plate-shaped structure. The side fixing plate 15 contacts the upper surface of the bottom support plate 18, and the bottom support plate 18 is an "L"-shaped plate-shaped structure. A clamping block 19 is fixedly connected to one side of the bottom support plate 18. The side fixing plate 15 fixedly connected to the side of the leg 9 contacts the upper surface of the bottom support plate 18, and the clamping block 19 is a square plate-shaped structure. One end of the clamping block 19 is clamped in the square groove 14 and the fastening bolt 20 on the clamping block 19 is connected to the leg 9. The fastening nut 25 in the mounting groove 24 is threadedly connected, the fastening nut 25 is fixedly connected to the leg 9, the block 19 fixedly connected to the side of the bottom support plate 18 is stuck in the square groove 14 opened on the side of the leg 9, and the block 19 is threadedly connected to the fastening nut 25 in the mounting groove 24 opened on the leg 9 through the fastening bolt 20, so that the bottom support plate 18 is fixed to the leg 9, and the connecting hole 13 opened on the side of the leg 9 can promote the concrete to flow into the square groove 14, thereby ensuring the bonding degree of the concrete. The overall stability of the prefabricated structure is enhanced. Through the above mutual cooperation, the bottom support plate 18 and the support leg 9 are used as the support of the prefabricated shear wall body 1, which can improve the stability of the prefabricated shear wall body 1 during installation. When the prefabricated shear wall body 1 is hoisted, the bottom support plate 18 and the support leg 9 are in contact with the ground, and the prefabricated shear wall body 1 is supported by the bottom support plate 18 and the support leg 9. After the reserved horizontal stirrups 2 are tied to the constraint edge, the fastening bolts 20 can be twisted and removed to release the lock between the bottom support plate 18 and the support leg 9, and the staff can remove the bottom support plate 18 from the support leg 9 for easy use by the staff.

[0042] Working principle: In actual use, the reserved vertical steel bars 4 are connected to the primary extrusion sleeve, the reserved horizontal stirrups 2 are tied and connected to the constraint edge, and then the horizontal belt at the root of the prefabricated shear wall body 1 is closed by a wooden formwork, and concrete is poured into the constraint edge. The concrete flows into the key slot 3 and the through slot 23 set on the side of the prefabricated shear wall body 1. The above ensures the bonding degree between the concrete and the prefabricated shear wall body 1, enhances the overall stability of the prefabricated structure, and during the pouring process, the poured concrete will flow into the bottom of the prefabricated shear wall body 1 along the chamfer on the prefabricated shear wall body 1, and cooperate with By injecting concrete into 5 reserved vibration through holes and using a vibrating rod to fully vibrate to ensure that the concrete flows densely, the sleeve-free grouting connection effect is achieved, which is convenient for personnel to use in practice. The other end of the reinforcing rib 16 fixedly connected to the leg 9 is fixedly connected to the upper support plate 17. The prefabricated shear wall body 1 is supported by the upper support plate 17 and the leg 9 to enhance the overall stability of the prefabricated structure. This not only simplifies the construction process and reduces the workload, but also significantly speeds up the construction progress and saves labor, thereby enabling staff to operate more efficiently and conveniently.

[0043] A novel method for realizing a sleeve-free grouting prefabricated shear wall comprises the following steps:

[0044] S1: Component production, using customized steel molds to ensure accurate reservation of steel bars, key slots 3, legs 9, upper grouting holes 6 and through slots 23;

[0045] S2: Installation, roughening of the wall surface to increase the concrete bonding capacity, hoisting of the prefabricated shear wall body 1, fixing with diagonal braces, reserved vertical steel bars 4 for first-level extrusion sleeve connection construction, and reserved horizontal stirrups 2 for binding to complete the installation;

[0046] S3: Sealing the formwork. The horizontal zone at the root of the prefabricated shear wall body 1 can be sealed with a wooden formwork, and concrete is poured. The reserved vibration through holes 5 are fully vibrated with a vibrating rod to ensure that the concrete flows densely.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel sleeve-free grouting prefabricated shear wall, comprising a prefabricated shear wall body (1), on which are arranged reserved vertical steel bars (4), high-strength stud bolts (22), reserved parts (21) and reserved horizontal stirrups (2), characterized in that: The prefabricated shear wall body (1) is provided with a keyway (3), a reserved vibration through hole (5), an upper grouting hole (6) and a through groove (23); a support leg (9) is provided at the bottom of the prefabricated shear wall body (1); and a connecting hole (13) and a square groove (14) are provided on the side of the support leg (9); The supporting leg (9) is provided with a reinforcing rib (16) and an upper supporting plate (17).

2. A novel sleeve-free grouting prefabricated shear wall according to claim 1, characterized in that: The reserved vertical steel bars (4) and the reserved horizontal stirrups (2) are both embedded and installed on the prefabricated shear wall body (1). A reserved part (21) is embedded on the prefabricated shear wall body (1). The threaded hole provided on the reserved part (21) is threadedly connected to one end of a high-strength stud bolt (22).

3. A novel sleeve-free grouting prefabricated shear wall according to claim 1, characterized in that: A side baffle (10) is fixedly connected to the side of the prefabricated shear wall body (1), the side baffle (10) is in a right-angled triangular plate structure, a side grouting hole (11) is reserved on the side baffle (10), the side grouting hole (11) is in a circular groove structure, and a plug (12) is stuck in the side grouting hole (11).

4. The novel sleeve-free grouting prefabricated shear wall according to claim 1 is characterized in that: The reserved vibration through hole (5) is in a circular hole-like structure, the reserved vibration through hole (5) runs through the entire prefabricated shear wall body (1), a key slot (3) is reserved on the side of the reserved vibration through hole (5), and the key slot (3) is in a square slot-like structure.

5. The novel sleeve-free grouting prefabricated shear wall according to claim 1 is characterized in that: One end of the support leg (9) is pre-embedded in the prefabricated shear wall body (1); a hoisting hole (7) is reserved on the upper surface of the prefabricated shear wall body (1); an embedded part (8) is arranged in the hoisting hole (7); and both ends of the embedded part (8) are pre-embedded in the prefabricated shear wall body (1).

6. The novel sleeve-free grouting prefabricated shear wall according to claim 1 is characterized in that: The side of the support leg (9) is provided with a connection hole (13) and a square groove (14); the square groove (14) is in a square groove-shaped structure; a reinforcing rib (16) is arranged in the square groove (14); one end of the reinforcing rib (16) is fixedly connected to the support leg (9) and the other end is fixedly connected to an upper support plate (17); the upper support plate (17) is in a square plate-shaped structure; and the upper support plate (17) is fixedly connected to the support leg (9).

7. The novel sleeve-free grouting prefabricated shear wall according to claim 1 is characterized in that: A side fixing plate (15) is fixedly connected to the side of the support leg (9); the side fixing plate (15) is in a square plate-like structure; the side fixing plate (15) is in contact with the upper surface of a bottom support plate (18); the bottom support plate (18) is in an "L"-shaped plate-like structure; a clamping block (19) is fixedly connected to one side of the bottom support plate (18).

8. The novel sleeve-free grouting prefabricated shear wall according to claim 1 is characterized in that: The upper grouting hole (6) is in a square groove-shaped structure, the upper grouting hole (6) is connected to a through groove (23) reserved in the prefabricated shear wall body (1), the through groove (23) is in a square groove-shaped structure, and the through groove (23) is connected to the key groove (3).

9. The novel sleeve-free grouting prefabricated shear wall according to claim 7 is characterized in that: The clamping block (19) is in a square plate-like structure, one end of the clamping block (19) is clamped in the square groove (14), and a fastening bolt (20) on the clamping block (19) is threadedly connected to a fastening nut (25) in a mounting groove (24) provided on the supporting leg (9), and the fastening nut (25) is fixedly connected to the supporting leg (9).

10. The method for realizing the novel sleeve-free grouting prefabricated shear wall according to any one of claims 1 to 7 comprises the following steps: S1: Component production, using customized steel molds to ensure accurate reservation of steel bars, keyways (3), legs (9), upper grouting holes (6) and through slots (23); S2: Installation, roughening the wall surface to increase the concrete bonding capacity, hoisting the prefabricated shear wall body (1), fixing the diagonal brace, connecting the reserved vertical steel bars (4) with the first-level extrusion sleeve, and tying the reserved horizontal stirrups (2) to complete the installation; S3: Sealing the formwork. The horizontal zone at the root of the prefabricated shear wall body (1) can be sealed with a wooden formwork, and concrete is poured. The reserved vibration through hole (5) is vibrated with a vibrating rod to ensure that the concrete flows densely.

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