Reinforced concrete outer wall connecting structure

Abstract

The utility model discloses a reinforced concrete outer wall connecting structure relates to building engineering technical field, the utility model discloses a grouting sleeve one side below is connected with first outer tube through grouting mouth, and first outer tube one side top is connected with grouting joint, and first outer tube inside below places the spring, and spring top place has the push frame, and the push frame top place has the sealing bead, and first outer tube inner ring is connected with the guide ring, the utility model discloses a grouting sleeve one side top is connected with second outer tube through the row of grout mouth. The utility model discloses the setting of first outer tube, spring, sealing bead and guide ring, when grouting operation, the slurry is guided after the top slope of guide ring, and the pressure concentrated effect is in sealing bead, and the sealing bead is driven to move down and drives the push frame compression spring, after stopping grouting, the spring releases the force storage drive push frame and moves up, makes sealing bead and guide ring bottom slope accurate adhesion and blocks, effectively reduces the slurry reflux phenomenon, and the filling fullness of grouting sleeve inside slurry is promoted with the help.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, specifically to a reinforced concrete exterior wall connection structure. Background Technology

[0002] In the process of building industrialization, precast reinforced concrete exterior wall components have become one of the core components of prefabricated buildings due to the advantages of standardized factory production, which can accurately control concrete strength and steel reinforcement layout accuracy, reduce on-site wet work, and shorten the construction cycle. These precast components are pre-installed with protruding connecting steel bars when they leave the factory. On-site construction only requires hoisting the precast components into place and splicing adjacent precast components through a special connection structure to finally form a continuous and stable exterior wall system.

[0003] Grouting sleeves are key connecting components for splicing precast reinforced concrete exterior walls. They are mainly used to achieve the mechanical transfer of connecting steel bars in adjacent precast components. Their working principle is as follows: steel bars of adjacent precast exterior walls are inserted into the cavities at both ends of the grouting sleeve. Then, high-strength, high-flow grout is injected into the sleeve. The grout fills the gap between the steel bars and the inner wall of the sleeve. After curing, through the bonding and mechanical interlocking of the grout, steel bars, and sleeve, an integrated rigid connection node is formed, ensuring the overall load-bearing capacity and deformation resistance of the exterior wall structure.

[0004] After grouting is completed, the existing grouting sleeve requires plugging the grout discharge joint with a stopper. The grouting pipe must be removed and the grouting joint quickly sealed with a stopper. The interval between plugging the grouting joint causes grout to easily flow back and leak out from the grouting joint. In addition, when the stopper is inserted to plug the grouting joint and the grout discharge joint, leakage may occur due to worker error, stopper quality problems, or leaks in the connection area between the precast exterior wall and the grout discharge joint and the grouting joint. As a result, the grouting sleeve may not be full, requiring subsequent secondary grouting. The operation is cumbersome and time-consuming. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a reinforced concrete exterior wall connection structure to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a reinforced concrete exterior wall connection structure, including a grouting sleeve, a first outer cylinder connected to the lower side of one side of the grouting sleeve via a grouting port, and a grouting connector connected to the upper side of one side of the first outer cylinder, a spring placed inside the lower part of the first outer cylinder, a pusher placed on the top of the spring, a sealing bead placed on the top of the pusher, and a guide ring connected to the inner ring of the first outer cylinder; a second outer cylinder connected to the upper side of one side of the grouting sleeve via a grout discharge port, and a grout discharge connector connected to the upper side of one side of the second outer cylinder, and end caps connected to the top and bottom of both the second outer cylinder and the first outer cylinder.

[0007] By adopting the above technical solutions, a double leak-proof system of one-way sealing and liquid level maintenance can be constructed. The spring, push frame, sealing beads and guide ring inside the first outer cylinder cooperate to automatically form a one-way seal after the grouting stops, reducing the backflow and leakage of the grout; by raising the height of the slurry discharge joint, the second outer cylinder can maintain the slurry level when the slurry discharge port is not blocked in time. The combination of the two reduces the situation that the slurry in the grouting sleeve is not fully filled. At the same time, the end cap closes the outer cylinder, providing a stable installation environment for the internal components and ensuring the sealing and functionality of the overall structure.

[0008] Further, a "rice" - shaped bracket is fixed inside the push frame, and the sealing beads are in contact with the push frame.

[0009] By adopting the above technical solutions, the "rice" - shaped bracket can not only stably support the sealing beads, ensuring that the sealing beads are not easily offset when stressed and guaranteeing the uniform transmission of force, but also reserve a slurry flow channel in the gaps of the bracket, enabling the slurry to smoothly pass through the inner ring of the push frame and flow towards the grouting port, avoiding the obstruction of slurry flow caused by the shielding of the push frame, and taking into account both the support stability and the slurry flowability.

[0010] Further, the top of the push frame slopes downwards.

[0011] By adopting the above technical solutions, the inclined surface can play a guiding role for the sealing beads when the spring drives the push frame to reset, guiding the sealing beads to accurately roll to the central area of the push frame, and then accurately fitting with the sloped opening at the bottom of the guide ring, avoiding the sealing failure caused by the offset of the sealing beads, and improving the fitting accuracy and sealing reliability of the one-way sealing structure.

[0012] Further, both the top opening and the bottom opening of the guide ring are sloped, and the sealing beads are in contact with the guide ring.

[0013] By adopting the above technical solutions, the top sloped opening can guide the slurry to the sealing beads during grouting, concentrating the slurry pressure on the top of the sealing beads, facilitating the downward movement of the sealing beads to achieve slurry flow; the bottom sloped opening, after the grouting stops, cooperates with the inclined surface of the push frame to guide the sealing beads to accurately abut against the center of the bottom of the guide ring, forming a tight seal, thereby constructing a complete one-way slurry flow channel and reducing the backflow of the slurry.

[0014] Further, a sealing ring penetrates through the top of the grouting sleeve, and the outer ring of the sealing ring is in interference fit with the inner ring of the grouting sleeve.

[0015] By adopting the above technical solutions, the steel bars in the reinforced concrete exterior wall have been placed on top of the grouting sleeve and are in contact with the sealing ring during the prefabrication and pouring.

[0016] Further, the bottom of the slurry discharge port is at the same horizontal plane as the bottom of the sealing ring.

[0017] By adopting the above technical solution, the second outer cylinder raises the installation height of the grout discharge joint, which can keep the grout level inside the sleeve stable at the same level as the bottom of the sealing ring, and prevent the grout from leaking down to the height of the grout discharge port, resulting in incomplete filling inside the grouting sleeve.

[0018] Furthermore, the cross-section of the grouting sleeve is corrugated.

[0019] By adopting the above technical solution, the cross-section of the grouting sleeve is designed to be corrugated, which can increase the bonding strength with the reinforced concrete exterior wall and increase the bonding strength between the grouting material and the grouting sleeve.

[0020] Furthermore, the sealing bead has a double-layer structure, with a steel ball as the inner core and a rubber layer as the outer layer of the sealing bead.

[0021] By adopting the above technical solution, the sealing bead adopts a double-layer design with a steel ball inner core and a rubber layer attached to the surface. The rubber layer can further improve the sealing performance between the sealing bead and the guide ring.

[0022] Furthermore, the first outer cylinder is welded and fixed to the grouting joint and the grouting port, and the second outer cylinder is welded and fixed to the grout discharge joint and the grout discharge port.

[0023] By adopting the above technical solution, after the second outer cylinder is processed, it is welded and fixed to the grouting sleeve and the grout discharge joint. After the first outer cylinder is processed, the workers weld and fix the first outer cylinder to the grouting joint and the grouting sleeve.

[0024] Furthermore, the guide ring is welded and fixed to the inner wall of the first outer cylinder, and the first and second outer cylinders are welded and fixed to the four end caps.

[0025] By adopting the above technical solution, the workers need to first put the guide ring into the first outer cylinder and weld it in place. Then, the workers will install the sealing bead, pusher and spring from the bottom of the first outer cylinder in sequence. Finally, the workers will weld the end caps to the top and bottom of the first outer cylinder. During the production of the second outer cylinder, since no internal structure is required, the workers can directly weld the end caps to the top and bottom of the second outer cylinder.

[0026] In summary, the present invention has the following main advantages:

[0027] 1. This utility model, through the arrangement of a first outer cylinder, spring, sealing bead, and guide ring, allows the grout to flow through the top slope of the guide ring during grouting. The pressure is concentrated on the sealing bead, pushing it downward and causing the pusher to compress the spring. After grouting stops, the spring releases its stored force, driving the pusher upward, so that the sealing bead precisely fits and seals the bottom slope of the guide ring. This effectively reduces grout backflow, reduces grout leakage caused by manual sealing intervals, reduces grout leakage caused by poor sealing of grouting joints, and reduces grout leakage caused by leaks in the connection area between the grouting joint and the external wall. It also helps to improve the fullness of grout filling inside the grouting sleeve.

[0028] 2. The present invention, through the setting of the push frame, the inner ring of the push frame with a star-shaped bracket facilitates stable support for the sealing bead, facilitates the transmission of force between the push frame and the sealing bead, and facilitates the flow of grout through the inner ring of the push frame to the grouting port; its top slope facilitates the guidance of the sealing bead, so that the sealing bead can roll down to the center area of ​​the push frame to cooperate with the bottom slope of the guide ring; thus realizing stable force transmission and structural support.

[0029] 3. By incorporating a second outer cylinder and a grout discharge connector, this utility model raises the installation height of the grout discharge connector, ensuring that the bottom of the grout discharge port is at the same level as the bottom of the sealing ring. Even if the grout discharge connector is not sealed in time, has a defective plug, or has leaks in the connection area, it can reduce the risk of the grout level dropping to the height of the grout discharge port due to leakage. This keeps the grout level stably maintained at the same level as the bottom of the sealing ring, reducing the probability of insufficient grout filling in the grouting sleeve, reducing the need for subsequent secondary grouting operations, simplifying the construction process, and optimizing the grout level maintenance effect. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of this utility model;

[0031] Figure 2 This is a schematic diagram of the cross-sectional structure of the grouting sleeve of this utility model;

[0032] Figure 3 This is a schematic diagram of the cross-sectional structure of the second outer cylinder of this utility model;

[0033] Figure 4 This is a schematic diagram of the cross-sectional structure of the first outer cylinder of this utility model;

[0034] Figure 5 This is a schematic diagram of the explosion structure of the first outer cylinder of this utility model.

[0035] In the diagram: 1. Grouting sleeve; 2. Sealing ring; 3. Grouting joint; 4. Grout discharge joint; 5. First outer cylinder; 6. Second outer cylinder; 7. End cap; 8. Spring; 9. Push frame; 10. Sealing bead; 11. Guide ring; 12. Grouting port; 13. Grout discharge port. Detailed implementation mode

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model, and cannot be understood as a limitation to the present utility model.

[0037] The following will explain the embodiments according to the overall structure of the present utility model.

[0038] Embodiment 1:

[0039] A reinforced concrete exterior wall connection structure, as Figures 1-5 shown, includes a grouting sleeve 1. A first outer cylinder 5 is connected to the lower side of one side of the grouting sleeve 1 through a grouting port 12. A grouting joint 3 is connected to the upper side of one side of the first outer cylinder 5. The bottom of the slurry discharge port 13 and the bottom of the sealing ring 2 are at the same horizontal plane. A spring 8 is placed below the interior of the first outer cylinder 5. A push frame 9 is placed on the top of the spring 8. A "rice" - shaped bracket is fixed inside the inner circle of the push frame 9. The top end of the push frame 9 is inclined downward. A sealing bead 10 is placed on the top of the push frame 9. The sealing bead 10 abuts against the push frame 9. A guide ring 11 is connected to the inner circle of the first outer cylinder 5. The top opening and the bottom opening of the guide ring 11 are both in a slope shape. The sealing bead 10 abuts against the guide ring 11. After stopping grouting, the compressed spring 8 inside the first outer cylinder 5 releases the stored potential energy, driving the push frame 9 to reset upward. During the upward movement of the push frame 9, the inclined surface at its top end cooperates with the slope - shaped opening at the bottom end of the guide ring 11 to jointly guide the sealing bead 10 to accurately move to the center position at the bottom of the guide ring 11, making the sealing bead 10 closely abut against the bottom of the guide ring 11 to form a one - way sealing structure. A second outer cylinder 6 is connected to the upper side of one side of the grouting sleeve 1 through a slurry discharge port 13. A slurry discharge joint 4 is connected to the upper side of one side of the second outer cylinder 6. End caps 7 are connected to the top and bottom ends of both the second outer cylinder 6 and the first outer cylinder 5. Since the second outer cylinder 6 raises the installation height of the slurry discharge joint 4, it can keep the slurry level inside the sleeve stable at a position flush with the bottom of the sealing ring 2, avoiding the slurry from dropping to the height of the slurry discharge port 13 due to slurry leakage, resulting in incomplete filling inside the grouting sleeve 1.

[0040] Refer to Figure 1 and Figure 2 In the above - mentioned embodiment, a sealing ring 2 penetrates through the top of the grouting sleeve 1. The outer circle of the sealing ring 2 is in interference fit with the inner circle of the grouting sleeve 1 to increase the sealing performance. The cross - section of the grouting sleeve 1 is in a corrugated shape. After the grouting material inside the grouting sleeve 1 is completely cured, the grouting material, through the bonding effect with the steel bars and the inner wall of the grouting sleeve 1, and the mechanical biting effect with the corrugated structure of the sleeve, stably connects the connecting steel bars of the building, the grouting sleeve 1 and the reinforced concrete exterior wall.

[0041] Embodiment 2:

[0042] Based on the above embodiment 1, in order to increase the sealing performance of the sealing bead 10, the following settings are now implemented.

[0043] See Figure 4 In the above embodiment, the sealing bead 10 has a double-layer structure. The inner core of the sealing bead 10 is a steel ball, and the outer layer of the sealing bead 10 is a rubber layer that is bonded and fixed. The sealing bead 10 adopts a double-layer design with a steel ball inner core and a rubber layer bonded to the outer layer. The rubber layer can further improve the sealing performance between the sealing bead 10 and the guide ring 11.

[0044] Example 3:

[0045] Based on the above embodiment one, in order to facilitate production and ensure the sealing of structural connections, the following settings are now adopted.

[0046] See Figure 1 , Figure 3 , Figure 4 and Figure 5 In the above embodiment, the first outer cylinder 5 is welded and fixed to the grouting joint 3 and the grouting port 12, the second outer cylinder 6 is welded and fixed to the grouting discharge joint 4 and the grouting discharge port 13, the guide ring 11 is welded and fixed to the inner wall of the first outer cylinder 5, and the first outer cylinder 5 and the second outer cylinder 6 are welded and fixed to the four end caps 7. During the production of the second outer cylinder 6, since no internal structure is required, the workers can directly weld the end caps 7 to the top and bottom of the second outer cylinder 6 and weld the second outer cylinder 6 to the grouting sleeve 1 and the grouting discharge joint 4. During the production of the first outer cylinder 5, the workers need to first put the guide ring 11 into the first outer cylinder 5 and weld it and fix it. Then, the workers install the sealing bead 10, the pusher 9 and the spring 8 from the bottom of the first outer cylinder 5 in sequence. Finally, the workers weld the end caps 7 to the top and bottom of the first outer cylinder 5. During this process, the spring 8 is compressed to complete the pre-tightening to ensure the sealing pressure. Finally, the workers weld the first outer cylinder 5 to the grouting joint 3 and the grouting sleeve 1 and fix it.

[0047] The implementation principle of this utility model is as follows: First, during the production of the second outer cylinder 6, since no internal structure is required, the workers can directly weld end caps 7 to the top and bottom of the second outer cylinder 6, and then weld and fix the second outer cylinder 6 to the grouting sleeve 1 and the grout discharge joint 4; while during the production of the first outer cylinder 5, the workers need to first put the guide ring 11 into the first outer cylinder 5 and weld it in place, then the workers install the sealing bead 10, the pusher 9 and the spring 8 in sequence from the bottom of the first outer cylinder 5, and finally the workers weld end caps 7 to the top and bottom of the first outer cylinder 5. During this process, the spring 8 is compressed to complete the pre-tightening to ensure the sealing pressure; finally, the workers weld and fix the first outer cylinder 5 to the grouting joint 3 and the grouting sleeve 1.

[0048] During the on-site hoisting and installation of precast reinforced concrete exterior wall components, workers insert the connecting steel bars extending from the building into the bottom end of the grouting sleeve 1. Meanwhile, the steel bars inside the reinforced concrete exterior wall are already placed on top of the grouting sleeve 1 and fitted with the sealing ring 2 during the precasting process. At the same time, the cross-section of the grouting sleeve 1 is designed to be corrugated, which can increase the bonding strength with the reinforced concrete exterior wall and increase the bonding strength between the subsequent grouting material and the grouting sleeve 1.

[0049] After the precast components are hoisted and positioned, the workers connect the grouting pipe to the grouting joint 3, preparing for the grouting operation. During grouting, the highly fluid grout enters the grouting joint 3 through the grouting pipe and then flows into the interior of the first outer cylinder 5. At this time, the guide ring 11 connected to the inner ring of the first outer cylinder 5 plays a guiding role. Its top opening is sloping, which can smoothly guide the grout to the sealing bead 10, so that the grout pressure is concentrated on the sealing bead 10. Under the action of grout pressure, the sealing bead 10 moves downward, simultaneously pushing the pusher 9 that is in contact with it to move downward. The cross-shaped bracket fixed in the inner ring of the pusher 9 not only provides stable support for the sealing bead 10 and ensures uniform force transmission, but also reserves flow space for the grout, allowing the grout to flow smoothly through the inner ring of the pusher 9 to the grouting port 12 and into the grouting sleeve 1. After the grout enters the grouting sleeve 1, it fills all the gaps between the reinforcing bar and the inner wall of the grouting sleeve 1, and the air in the grouting sleeve 1 is discharged from the grout discharge joint 4. During the downward movement of the pusher 9, its bottom contacts and compresses the spring 8 placed inside the lower part of the first outer cylinder 5, so that the spring 8 stores the reset potential energy.

[0050] When the grout gradually fills the grouting sleeve 1 to the grout outlet 13, the grout will enter the second outer cylinder 6 through the grout outlet 13 and finally flow out from the grout outlet joint 4 of the second outer cylinder 6. At this time, it indicates that the grout in the grouting sleeve 1 has been basically filled to the preset height, and the workers stop the grouting operation. After the grouting stops, the compressed spring 8 in the first outer cylinder 5 releases the stored potential energy and drives the pusher 9 to reset upward. During the upward movement of the pusher 9, its top inclined surface cooperates with the sloping opening at the bottom of the guide ring 11 to guide the sealing bead 10 to move precisely to the bottom center position of the guide ring 11, so that the sealing bead 10 and the bottom of the guide ring 11 are tightly abutted, forming a one-way sealing structure, which effectively reduces the situation of grout flowing back from the grouting outlet 12 to the grout outlet joint 3. This process does not require immediate manual operation and can make up for the interval of subsequent manual sealing time. Moreover, the sealing bead 10 adopts a double-layer design with a steel ball core and a rubber layer on the surface. The rubber layer can further improve the sealing performance between the sealing bead 10 and the guide ring 11.

[0051] Workers used plugs to seal the grouting joint 3 and the grout discharge joint 4 respectively, forming a safety redundancy protection. In this process, the plug sealing complements the one-way sealing structure of the first outer cylinder 5 and the height design of the second outer cylinder 6. If the plug is not properly sealed due to worker error, has quality defects, or there is a leak in the connection area between the precast exterior wall and the joint, the one-way sealing structure of the first outer cylinder 5 can prevent the grout from flowing back. The second outer cylinder 6, by raising the installation height of the grout discharge joint 4, can keep the grout level in the sleeve stable at the same level as the bottom of the sealing ring 2, preventing the grout from leaking down to the height of the grout discharge port 13 and causing incomplete filling inside the grouting sleeve 1. If the one-way sealing structure of the first outer cylinder 5 and the height design of the second outer cylinder 6 cannot achieve the desired effect due to quality reasons, the plug can be used to prevent leakage.

[0052] Finally, after the grouting material inside the grouting sleeve 1 has completely cured, the grouting material will stably connect the building's connecting steel bars, grouting sleeve 1 and reinforced concrete exterior wall through the bonding effect with the steel bars and the inner wall of the grouting sleeve 1, as well as the mechanical interlocking effect with the corrugated structure of the sleeve.

[0053] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A reinforced concrete exterior wall connection structure, comprising a grouting sleeve (1), characterized in that: One side below of the grouting sleeve (1) is connected to a first outer cylinder (5) through a grouting port (12), and a grouting joint (3) is connected above one side of the first outer cylinder (5). A spring (8) is placed below the inside of the first outer cylinder (5), and a pushing frame (9) is placed on top of the spring (8). A sealing bead (10) is placed on top of the pushing frame (9). A guiding ring (11) is connected to the inner ring of the first outer cylinder (5). One side above of the grouting sleeve (1) is connected to a second outer cylinder (6) through a slurry discharge port (13), and a slurry discharge joint (4) is connected above one side of the second outer cylinder (6). End caps (7) are connected to the top and bottom of both the second outer cylinder (6) and the first outer cylinder (5).

2. The reinforced concrete exterior wall connection structure according to claim 1, characterized in that: A "rice" - shaped bracket is fixed to the inner ring of the pushing frame (9), and the sealing bead (10) abuts against the pushing frame (9).

3. The reinforced concrete exterior wall connection structure according to claim 2, characterized in that: The top of the pushing frame (9) slopes downward.

4. The reinforced concrete exterior wall connection structure according to claim 2, characterized in that: The top opening and the bottom opening of the guiding ring (11) are both in a slope shape, and the sealing bead (10) abuts against the guiding ring (11).

5. The reinforced concrete exterior wall connection structure according to claim 1, characterized in that: A sealing ring (2) penetrates through the top of the grouting sleeve (1), and the outer ring of the sealing ring (2) is in interference fit with the inner ring of the grouting sleeve (1).

6. The reinforced concrete exterior wall connection structure according to claim 5, characterized in that: The bottom of the slurry discharge port (13) is at the same horizontal plane as the bottom of the sealing ring (2).

7. The reinforced concrete exterior wall connection structure according to claim 5, characterized in that: The cross - section of the grouting sleeve (1) is in a corrugated shape.

8. The reinforced concrete exterior wall connection structure according to claim 1, characterized in that: The sealing bead (10) has a double - layer structure. The inner core of the sealing bead (10) is a steel ball, and the surface layer of the sealing bead (10) is a rubber layer fixed by pasting.

9. The reinforced concrete exterior wall connection structure according to claim 1, characterized in that: The first outer cylinder (5) is fixedly welded to the grouting joint (3) and the grouting port (12), and the second outer cylinder (6) is fixedly welded to the slurry discharge joint (4) and the slurry discharge port (13).

10. The reinforced concrete exterior wall connection structure according to claim 9, characterized in that: The guiding ring (11) is fixedly welded to the inner wall of the first outer cylinder (5), and the first outer cylinder (5) and the second outer cylinder (6) are fixedly welded to the four end caps (7).

Images