Assembly type hollow sandwich plate sleeve grouting connection joint structure

Abstract

The utility model discloses an assembly type open-web sandwich plate sleeve grouting connection node structure which comprises an open-web sandwich plate and a component, steel bars are arranged at the ends of the open-web sandwich plate and the component, and the two opposite steel bars are connected together through a grouting sleeve connecting piece. By adopting the connection mode of the internal thread cover and the external thread, the first grouting pipe and the second grouting pipe are separated when construction is carried out in a narrow space, so that the first grouting pipe and the second grouting pipe can be sleeved on corresponding reinforcing steel bars respectively, operation in the narrow space is facilitated, construction personnel can operate conveniently, the construction efficiency is greatly improved, and the construction cost is reduced. The two opposite steel bars can be accurately in butt joint and fixed, it is guaranteed that the steel bars can effectively transmit force in the structural stress process, the connection reliability is guaranteed, and the overall strength and stability of the structure are improved.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated hollow sandwich panel sleeve grouting technology, specifically a prefabricated hollow sandwich panel sleeve grouting connection node structure. Background Technology

[0002] Hollow sandwich slab structures consist of two layers of ribbed reinforced concrete slabs, also known as shear key type two-way hollow slabs. These slabs are connected at the intersections of a grid pattern using reinforced concrete shear keys with a width greater than their height, thus optimizing the structure. They are characterized by light weight, high flexibility, and low damping. Furthermore, large-span spatial structures are highly sensitive to lateral internal forces. Additionally, the reinforcing bars of different components within the hollow sandwich slab require reliable connections using grouted sleeves to ensure coordinated action, transferring tensile and compressive loads and maintaining structural integrity.

[0003] Currently, Chinese patent CN220747433U discloses a prefabricated building construction grouting sleeve, including a first reinforcing steel bar, a second reinforcing steel bar, a third reinforcing steel bar, a sleeve shell, a grout discharge port, and a grouting port. An auxiliary connecting pipe is fixedly connected to the top of the sleeve shell, and an auxiliary connecting pipe is fixedly connected to the top of the auxiliary connecting pipe. An auxiliary branch pipe is fixedly connected to the surface of the sleeve shell, and the surface of the sleeve shell is fixedly connected to the back of the grout discharge port and the grouting port. This utility model, through the combined use of the sleeve shell, auxiliary sleeve inner shell, auxiliary connecting pipe, auxiliary connecting pipe, and auxiliary branch pipe assembly, along with the grout discharge port, grouting port, and auxiliary cotton body assembly, achieves the effect of preventing grout waste and continuously injecting grout into the pipe body, ensuring the grout completely fills the pipe body and completely wraps the prefabricated end reinforcing steel bar and the inserted end reinforcing steel bar. This results in a denser and more resilient grout after hardening, solving the problem of grout waste caused by a large amount of grout spraying out from the grouting port during grouting.

[0004] The above-mentioned grouting sleeve for prefabricated building construction has some problems in use. Although it can prevent grout waste, when the gap between the ends of the steel bars of the two sets of components to be connected is small, the operation space is limited due to the obstruction of the adjacent steel bars, and the construction personnel have difficulty inserting the steel bars into the sleeve smoothly and accurately. They may need to repeatedly adjust the position of the steel bars, which increases the difficulty of insertion. Utility Model Content

[0005] The purpose of this utility model is to provide a prefabricated hollow sandwich panel sleeve grouting connection node structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A prefabricated hollow sandwich panel sleeve grouting connection node structure includes a hollow sandwich panel and a component. The ends of the hollow sandwich panel and the component are provided with steel bars, and two sets of opposite steel bars are connected together by a grouting sleeve connector.

[0008] The grouting sleeve connector includes a first grouting pipe and a second grouting pipe. The top of both the first and second grouting pipes is connected to an injection pipe. The first grouting pipe is sleeved on the end of the reinforcing bar located on the side of the hollow sandwich slab, and the second grouting pipe is sleeved on the end of the reinforcing bar on the component side. The end of the first grouting pipe has an annular groove, and the surface of the annular groove is fitted with an internal thread cap. The end of the second grouting pipe is provided with an external thread that matches the internal thread cap. The inner cavity of the internal thread cap is connected to the end of the second grouting pipe through a mating thread with the external thread. The opposing ends of the first and second grouting pipes are fixedly connected with guide pipes. The opposing ends of the two sets of guide pipes are provided with anti-detachment components for fixing the reinforcing bars and preventing them from coming out.

[0009] As a preferred technical solution, the anti-detachment component includes a threaded tube fixedly connected to the end of the guide tube. The circumferential surface of the threaded tube has four sets of square holes arranged in a cross-shaped symmetrical pattern. The inner cavity of each set of square holes is connected to a wedge block through a rotating connector. The inclined surface of each set of wedge blocks is arranged upwards. A nut is threadedly connected to the end of the threaded tube near the guide tube, and the opening of the nut contacts the inclined surface of the wedge block.

[0010] As a preferred technical solution, the rotating connector includes connecting grooves formed on the inner wall surfaces of both sides of each set of square holes near the end of the guide tube. A connecting rod is rotatably inserted into the inner cavity of each set of connecting grooves. A connecting strip is fixedly connected between two sets of connecting rods in the same position. The end of each set of connecting strips is fixedly connected to the end of the corresponding side wedge block.

[0011] As a preferred technical solution, rubber tubes are fixedly connected to the opposite ends of both sets of guide tubes.

[0012] As a preferred technical solution, the two sets of rubber tubes are arranged in a trumpet shape, and the small ends of the two sets of rubber tubes are arranged opposite each other.

[0013] As a preferred technical solution, a rubber ring is embedded at the end of the second grouting pipe, and the end of the rubber ring protrudes from the opening of the second grouting pipe.

[0014] As a preferred technical solution, both sets of injection tubes are fitted with caps at the top.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model, through the setting of the grouting sleeve connector, adopts the connection method of internal thread cap and external thread, which separates the first grouting pipe and the second grouting pipe when constructing in a confined space. This facilitates the fitting of the pipes onto the corresponding reinforcing bars, making it easier to operate in confined spaces and thus easier for construction personnel to operate. This greatly improves construction efficiency. Furthermore, it enables the two sets of reinforcing bars to be accurately connected and fixed, ensuring that the reinforcing bars can effectively transmit force during structural stress, guaranteeing the reliability of the connection, and improving the overall strength and stability of the structure.

[0017] 2. By setting up the anti-loosening component, the wedge block will tightly lock the steel bar when the nut is tightened, which can effectively prevent the steel bar from coming out of the guide tube, improve the reliability and safety of the connection node, and ensure that the steel bar connection will not fail during the structural stress process. At the same time, the four sets of wedge blocks arranged in a cross symmetry can fix the steel bar from multiple directions, which can better adapt to steel bars of different diameters and has a certain degree of versatility.

[0018] 3. The present invention uses a rubber tube, which is funnel-shaped. Its shape can guide the steel bars well, making it easier and more accurate for the steel bars to be inserted into the guide tube and the grouting tube. At the same time, it can effectively prevent the grout from overflowing from the gap between the rubber tube and the steel bars. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of the prefabricated hollow sandwich panel sleeve grouting connection node structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the grouting sleeve connector of this utility model;

[0021] Figure 3 This is a schematic diagram of the guide tube of this utility model;

[0022] Figure 4 This is a schematic diagram of the anti-detachment component of this utility model.

[0023] In the picture:

[0024] 100. Hollow sandwich slab; 101. Reinforcing steel; 102. Component;

[0025] 200. Second grouting pipe; 201. Injection pipe; 202. Cap; 203. Annular groove; 204. Internal thread cap; 205. External thread; 206. Guide pipe; 207. Rubber ring; 208. First grouting pipe; 209. Rubber hose;

[0026] 300. Threaded pipe; 301. Wedge block; 302. Square hole; 303. Nut; 304. Connecting strip; 305. Connecting rod; 306. Connecting groove. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-4 This embodiment provides a prefabricated hollow sandwich panel sleeve grouting connection node structure, including a hollow sandwich panel 100 and a component 102. The ends of the hollow sandwich panel 100 and the component 102 are provided with steel bars 101, and two sets of opposite steel bars 101 are connected together by grouting sleeve connectors.

[0029] The grouting sleeve connector includes a first grouting pipe 208 and a second grouting pipe 200. Both the top of the first grouting pipe 208 and the second grouting pipe 200 are connected to an injection pipe 201. The first grouting pipe 208 is sleeved on the end of the reinforcing bar 101 located on the side of the hollow sandwich slab 100, and the second grouting pipe 200 is sleeved on the end of the reinforcing bar 101 on the side of the component 102. An annular groove 203 is formed at the end of the first grouting pipe 208, and an internal threaded cap 204 is fitted onto the surface of the annular groove 203. An external thread 205, which matches the internal threaded cap 204, is provided at the end of the second grouting pipe 200. The inner cavity of the internal threaded cap 204 is connected to the end of the second grouting pipe 200 through a mating thread with the external thread 205. The opposing ends of the first grouting pipe 208 and the second grouting pipe 200 are... The guide pipes 206 are fixedly connected, and each of the two sets of guide pipes 206 has an anti-detachment component at one end of its opposite side to fix the reinforcing bar 101 and prevent it from coming off. By setting the grouting sleeve connector, the internal thread cap 204 and the external thread 205 are used for connection. When constructing in a confined space, the first grouting pipe 208 and the second grouting pipe 200 can be separated, which is convenient for them to be fitted onto the corresponding reinforcing bars 101. This facilitates operation in confined spaces and makes it easier for construction personnel to operate, greatly improving construction efficiency. In addition, it enables the two sets of opposite reinforcing bars 101 to be accurately connected and fixed, ensuring that the reinforcing bars 101 can effectively transmit force during structural stress, ensuring the reliability of the connection, and improving the overall strength and stability of the structure.

[0030] Among them, component 102 is a technical means well known to those skilled in the art, including but not limited to one of the following: frame column, shear wall, and hollow sandwich panel 100 of adjacent floors in a building. Others will not be described in detail here.

[0031] The anti-detachment component includes a threaded tube 300 fixedly connected to the end of the guide tube 206. The threaded tube 300 has four sets of square holes 302 arranged in a cross-shaped symmetrical pattern on its circumferential surface. Each set of square holes 302 has a wedge-shaped block 301 connected to its inner cavity via a rotating connector. The inclined surface of each wedge-shaped block 301 faces upwards. A nut 303 is threadedly connected to the end of the threaded tube 300 near the guide tube 206. The opening of the nut 303 contacts the inclined surface of the wedge-shaped block 301. With the anti-detachment component, when the nut 303 is tightened, the wedge-shaped block 301 tightly grips the reinforcing bar 101, effectively preventing the reinforcing bar 101 from detaching from the guide tube 206. This improves the reliability and safety of the connection node, ensuring that the reinforcing bar 101 connection will not fail during structural stress. Furthermore, the four sets of wedge-shaped blocks 301 arranged in a cross-shaped symmetrical pattern can fix the reinforcing bar 101 from multiple directions, adapting well to reinforcing bars 101 of different diameters and possessing a certain degree of versatility.

[0032] The rotating connector includes connecting grooves 306 on the inner wall surfaces of both sides of each set of square holes 302 near the end of the guide tube 206. Each set of connecting grooves 306 has a connecting rod 305 rotatably inserted into its inner cavity. A connecting strip 304 is fixedly connected between two sets of connecting rods 305 in the same position. The end of each set of connecting strips 304 is fixedly connected to the end of the corresponding side wedge block 301. By setting the rotating connector, the wedge block 301 can rotate flexibly in the square hole 302, so that when the reinforcing bar 101 is inserted, the wedge block 301 can be adjusted according to the position and angle of the reinforcing bar 101, and the subsequent clamping operation can be smoothly realized.

[0033] Among them, the opposite ends of the two sets of guide tubes 206 are fixed with rubber tubes 209. The two sets of rubber tubes 209 are arranged in a trumpet shape, with the small ends of the two sets of rubber tubes 209 facing each other. Through the arrangement of the rubber tubes 209, the trumpet shape can play a good guiding role for the steel bar 101, making it easier and more accurate for the steel bar 101 to pass through the guide tube 206 and the grouting pipe. At the same time, it can effectively prevent the grout from overflowing from the gap between the rubber tube 209 and the steel bar 101.

[0034] The end of the second grouting pipe 200 is inlaid with a rubber ring 207. The end of the rubber ring 207 protrudes from the opening of the second grouting pipe 200. With the setting of the rubber ring 207, when the first grouting pipe 208 and the second grouting pipe 200 are connected, the rubber ring 207 can form a sealing barrier at the connection between the two, effectively preventing the grouting material from seeping out from the connection.

[0035] Both sets of injection pipes 201 are fitted with caps 202 at the top. By setting the caps 202, it is possible to prevent debris from entering the injection pipes 201 when no grouting operation is being performed, avoid blockage of the injection pipes 201, ensure unobstructed injection channels, and thus ensure that the grouting process can proceed smoothly, which is conducive to ensuring construction quality.

[0036] Working principle;

[0037] First, the first grouting pipe 208 is sleeved on the end of the steel bar 101 on the side of the hollow sandwich slab 100, and the second grouting pipe 200 is sleeved on the end of the steel bar 101 on the side of the component 102, so that the two sets of steel bars 101 are initially positioned by the first grouting pipe 208 and the second grouting pipe 200.

[0038] Subsequently, an internal threaded cap 204 is fitted onto the annular groove 203 at the end of the first grouting pipe 208. The internal threaded cap 204 is moved toward the second grouting pipe 200 and rotated so that its inner cavity is connected to the external thread 205 at the end of the second grouting pipe 200. Through the cooperation between the internal threaded cap 204 and the external thread 205, the first grouting pipe 208 and the second grouting pipe 200 are threaded together.

[0039] At this time, the wedge block 301 in the anti-detachment component is connected to the square hole 302 of the threaded tube 300 through the rotating connector. In the initial state, the inclined surface of the wedge block 301 faces upward, and the bottom of the wedge block 301 contacts the steel bar 101 located in the threaded tube 300. Subsequently, the nut 303 is tightened continuously, and the opening of the nut 303 gradually squeezes the inclined surface of the wedge block 301. After being squeezed, the wedge block 301 will move towards the steel bar 101 and tighten, thereby tightly locking the steel bar 101 and preventing the steel bar 101 from coming out of the guide tube 206, thus achieving reliable fixation of the steel bar 101.

[0040] Meanwhile, the opposite ends of the two sets of guide tubes 206 are fixedly connected with flared rubber tubes 209, with the smaller ends facing each other. The flared rubber tubes 209 can play a certain guiding role, making it easier for the reinforcing bar 101 to accurately pass through the guide tubes 206. In addition, during the connection process, the rubber tubes 209 can fill the gap between the guide tubes 206 and the reinforcing bar 101, playing a certain sealing role and preventing grout leakage during the grouting process.

[0041] At this time, the cap 202 is removed, and grout is injected into the first grouting pipe 208 and the second grouting pipe 200 through one of the injection pipes 201. This fills the gap between the first grouting pipe 208, the second grouting pipe 200 and the reinforcing bar 101, as well as the internal space of the entire grouting sleeve connector, so that the reinforcing bar 101 and the grouting pipe form a tight bond. This achieves a reliable connection between the hollow sandwich panel 100 and the component 102. The force is transmitted through the adhesive force of the grout, ensuring the integrity and stability of the structure.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A prefabricated hollow sandwich panel sleeve grouting connection node structure, characterized in that, It includes a hollow sandwich panel (100) and a component (102), and the ends of the hollow sandwich panel (100) and the component (102) are provided with steel bars (101), and two sets of steel bars (101) are connected together by a grouting sleeve connector; The grouting sleeve connector includes a first grouting pipe (208) and a second grouting pipe (200). Both the first grouting pipe (208) and the second grouting pipe (200) have an injection pipe (201) connected to their tops. The first grouting pipe (208) is sleeved on the end of the reinforcing bar (101) located on the side of the hollow sandwich panel (100), and the second grouting pipe (200) is sleeved on the end of the reinforcing bar (101) on the side of the component (102). An annular groove (203) is formed at the end of the first grouting pipe (208), and an internal thread is fitted onto the surface of the annular groove (203). The end of the second grouting pipe (200) is provided with an external thread (205) that is compatible with the internal thread cover (204). The inner cavity of the internal thread cover (204) is connected to the end of the second grouting pipe (200) through the mating thread of the external thread (205). The opposing ends of the first grouting pipe (208) and the second grouting pipe (200) are both fixedly connected with guide pipes (206). The opposing ends of the two sets of guide pipes (206) are provided with anti-detachment components for fixing the reinforcing bar (101) and preventing the reinforcing bar (101) from falling out.

2. The prefabricated hollow sandwich panel sleeve grouting connection node structure according to claim 1, characterized in that: The anti-detachment component includes a threaded tube (300) fixedly connected to the end of the guide tube (206). The circumferential surface of the threaded tube (300) is provided with four sets of square holes (302) arranged in a cross shape. The inner cavity of each set of square holes (302) is connected to a wedge block (301) through a rotating connector. The inclined surface of each set of wedge blocks (301) is set upward. The end of the threaded tube (300) near the guide tube (206) is threadedly connected to a nut (303). The opening of the nut (303) contacts the inclined surface of the wedge block (301).

3. The prefabricated hollow sandwich panel sleeve grouting connection node structure according to claim 2, characterized in that: The rotating connector includes connecting grooves (306) on the inner wall surfaces of both sides of each set of square holes (302) near the end of the guide tube (206). A connecting rod (305) is rotatably inserted into the inner cavity of each set of connecting grooves (306). A connecting strip (304) is fixedly connected between two sets of connecting rods (305) in the same position. The end of each set of connecting strips (304) is fixedly connected to the end of the corresponding side wedge block (301).

4. The prefabricated hollow sandwich panel sleeve grouting connection node structure according to claim 1, characterized in that: The opposite ends of the two sets of guide tubes (206) are fixed with rubber tubes (209).

5. The prefabricated hollow sandwich panel sleeve grouting connection node structure according to claim 4, characterized in that: The two sets of rubber tubes (209) are arranged in a trumpet shape, and the small ends of the two sets of rubber tubes (209) are arranged opposite each other.

6. The prefabricated hollow sandwich panel sleeve grouting connection node structure according to claim 1, characterized in that: The end of the second grouting pipe (200) is inlaid with a rubber ring (207), the end of which protrudes from the opening of the second grouting pipe (200).

7. A prefabricated hollow sandwich panel sleeve grouting connection node structure according to any one of claims 1-6, characterized in that: Both sets of injection tubes (201) are fitted with caps (202) at the top.

Images