Concrete grouting pull rivet and concrete pile connecting structure applying pull rivet

Abstract

The utility model discloses a grouting rivet for concrete and a concrete pile connecting structure using the same, relates to the technical field of building connecting pieces, and aims to solve the problem that a traditional mechanical connecting piece is used as a steel plate type concrete prefabricated piece, so that the cost is too high. The key points of the technical scheme are as follows: the connector comprises a fixed section and an inserting section, the front end of the inserting section is provided with an end head, the section diameter of the end head is larger than that of the inserting section, the end head is uniformly provided with a plurality of chutes along the peripheral side, and the chutes penetrate through the upper surface and the lower surface of the end head. The utility model aims to provide a grouting rivet for concrete and a concrete pile connecting structure using the same.

Description

Technical Field

[0001] This utility model relates to building connectors, and more specifically, to a concrete grouting rivet and a concrete pile connection structure using the rivet. Background Technology

[0002] Riveting is a common type of connector, but it has not yet been used in precast concrete components. Currently, mechanical connectors are commonly used in precast concrete components. For example, a prestressed pipe pile connector disclosed in Chinese Patent Publication No. CN212688935U has the following technical features: it includes a first nut, a rod body, a second nut, a ferrule assembly, and an intermediate sleeve. The rod body is installed inside the first nut and has a plug portion. The intermediate sleeve is installed in the inner cavity of the second nut. The ferrule assembly is located in the cavity formed by the intermediate sleeve and the inner cavity of the second nut. The intermediate sleeve has a first limiting cavity at one end near the ferrule assembly to prevent the ferrule assembly from coming out of the second nut. The ferrule assembly has multiple elastic locking clips evenly arranged circumferentially, forming a locking area for the plug portion to be inserted. The inner wall of each elastic locking clip has a limiting stepped groove to prevent the plug portion from being pulled out backward from the locking area formed by the multiple elastic locking clips.

[0003] The above-mentioned technical solution uses more components, which is more expensive than riveting and is suitable for ordinary concrete piles. There is a new type of concrete pile, which is characterized by having steel plates at both ends. After the two piles are connected at both ends, the two steel plates are welded together by sealing welding to give it better water resistance. Due to the presence of steel plates, the above-mentioned pile type gives it the application environment of riveting. Using traditional mechanical connectors has the problem of excessive cost.

[0004] Therefore, a new technical solution is urgently needed to solve the above-mentioned technical problems. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a concrete grouting riveting method and a concrete pile connection structure using the riveting method.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a concrete grouting riveting, comprising a fixed section and an insertion section, wherein the insertion section has an end head at its front end, the cross-sectional diameter of the end head is larger than the cross-sectional diameter of the insertion section, and the end head is uniformly provided with a plurality of inclined grooves along its periphery, the inclined grooves penetrating the upper and lower surfaces of the end head.

[0007] The present invention is further configured such that the front end of the end head is provided with a spherical surface.

[0008] The present invention is further configured such that: the fixed section has several operating planes on its circumferential side below the external thread.

[0009] The present invention is further configured such that: the circumferential sidewall of the plug segment is provided with a plurality of ratchet-shaped ring teeth at equal intervals.

[0010] A concrete pile connection structure includes a concrete pile with an upper steel plate and a lower steel plate fixedly connected to its two ends, respectively. A grouting rivet is fixedly connected to the surface of the lower steel plate. The upper steel plate has an insertion groove for inserting a splice section. The insertion groove extends into the interior of the concrete pile. A post-curing layer is filled between the insertion groove and the splice section.

[0011] The present invention is further configured such that the post-curing layer is formed after being fixed by cement slurry.

[0012] The present invention is further configured such that: the lower steel plate is provided with a threaded groove penetrating its upper and lower surfaces, and the circumferential sidewall at the end of the fixed section is provided with an external thread that matches the threaded groove.

[0013] The present invention is further configured such that: multiple threaded grooves are provided and are evenly distributed along the outer circumference of the surface of the lower steel plate, and multiple insertion grooves are provided and correspond to the threaded grooves.

[0014] The present invention is further configured such that: a reinforcing layer is provided inside the post-curing layer, and the reinforcing layer is a steel mesh sleeve.

[0015] The present invention is further configured such that the inner circumferential wall of the insertion groove is provided with an internal thread.

[0016] This utility model has the following beneficial effects: In the process of fixing and connecting concrete parts, the fixing section of the grouting rivet is fixedly connected to a concrete part. By opening an insertion groove for the insertion section to be inserted into another concrete part and filling the insertion groove with cement grout, the two concrete parts can be effectively fixed and connected after fixing, which greatly reduces the construction cost. Moreover, compared with traditional mechanical connectors, a single grouting rivet effectively reduces the production cost of the connector. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of specific embodiment 1;

[0018] Figure 2 This is a three-dimensional structural diagram of specific embodiment 2;

[0019] Figure 3 A schematic diagram of the cross-sectional structure of the concrete pile in this embodiment 2;

[0020] Figure 4 This is a schematic diagram of a partial cross-sectional structure at the connection of concrete piles.

[0021] Figure descriptions: 1. Fixed section; 2. Insertion section; 3. End; 4. Inclined groove; 5. Spherical surface; 6. Operating plane; 7. Ratcheted ring tooth; 8. Concrete pile; 9. Upper steel plate; 10. Lower steel plate; 11. Insertion groove; 12. Post-curing layer; 13. Threaded groove; 14. External thread; 15. Reinforcing layer; 16. Internal thread. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings.

[0023] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific part, respectively. Specific Implementation Example 1:

[0025] As shown in the figure, a concrete grouting riveting includes a fixed section 1 and an insertion section 2. The insertion section 2 has an end 3 at its front end. The cross-sectional diameter of the end 3 is larger than that of the insertion section 2. Several inclined grooves 4 are evenly opened along the periphery of the end 3, and the inclined grooves 4 penetrate the upper and lower surfaces of the end 3.

[0026] In the process of fixing and connecting concrete components, the fixing section 1 of the grouting rivet is fixedly connected to a concrete component. By opening an insertion groove for the insertion section 2 to be inserted into another concrete component and filling the insertion groove with cement grout, the two concrete components can be effectively fixed and connected after fixing. This greatly reduces the construction cost. Moreover, compared with traditional mechanical connectors, a single grouting rivet effectively reduces the production cost of the connector.

[0027] The front end of the end 3 is provided with a spherical surface 5, which enables the insertion section 2 to better break through the uncured cement slurry and ensure that the insertion section 2 can be inserted into the slot.

[0028] In other embodiments, the front end of end 3 can also adopt a conical surface, a multi-faceted pyramid shape, or other structures that make it easier to insert cement fluid. The specific structure adopted can be selected according to the difficulty of mold closing in the cold heading machine.

[0029] The closer the cross-sectional diameter of end 3 is to the inner diameter of the insertion groove, the better its effect on improving tensile strength. However, it also makes it more difficult to squeeze out cement slurry during the insertion of insertion segment 2. Therefore, the inclined groove 4 provided on the periphery of end 3 allows cement slurry to be squeezed out of the insertion groove through the inclined groove 4, reducing the impact of end 3 on the insertion of insertion segment 2 into the insertion groove.

[0030] The circumferential sidewall of the plug section 2 is provided with several ratchet-shaped ring teeth 7 at equal intervals, so that the connection section between the plug section 2 and the post-curing layer is connected in a sawtooth shape, which effectively improves the connection strength between the two. Specific Implementation Example 2:

[0032] A concrete pile connection structure using the above-mentioned grouting and riveting includes a concrete pile 8, with an upper steel plate 9 and a lower steel plate 10 fixedly connected to its two ends respectively. A grouting and riveting is fixedly connected to the surface of the lower steel plate 10. An insertion groove 11 for inserting a insertion section 2 is provided on the steel plate 9. The insertion groove 11 extends into the interior of the concrete pile 8. A post-curing layer 12 is filled between the insertion groove 11 and the insertion section 2.

[0033] During installation, cement grout is first poured into the insertion groove 11 of one concrete pile 8, and then the grouting rivet at one end of another concrete pile 8 is inserted into the insertion groove 9 filled with cement grout, so that the upper steel plate 9 and the lower steel plate 10 of the two concrete piles 7 are in contact. After the cement grout has cured, a post-curing layer 13 is formed. Finally, the workers seal and weld the two steel plates 8 that are in contact, thereby ensuring the connection strength of the two concrete piles 7.

[0034] The lower steel plate 10 has a threaded groove 13 that runs through its upper and lower surfaces. The end side wall of the fixed section 1 is provided with an external thread 14 that matches the threaded groove 13. The fixed section 1 has several operating planes 6 on its circumference below the external thread. In this embodiment, two mirror-shaped operating planes are provided to facilitate the rotation and installation of the grouting rivet using a specific tool.

[0035] When tightening the grouting rivet, the top of the fixed section 1 abuts against the concrete pile 8. The grouting rivet is detachably connected to the lower steel plate, which facilitates its separate processing and transportation, further reducing costs.

[0036] Multiple threaded grooves 13 are provided and are evenly distributed along the outer circumference of the surface of the lower steel plate 10. Multiple insertion grooves 11 are provided and correspond to the threaded grooves 13, thereby further improving the connection strength between the concrete piles 8.

[0037] A reinforcing layer 15, specifically a steel mesh sleeve, is provided inside the post-curing layer 12. The inner circumference of the insertion groove 11 is provided with internal threads 16, which further improves the stability of the connection between the post-curing layer and the insertion groove and enhances the tensile performance of the two concrete piles.

[0038] During installation, the inside of the insertion slot 11 is first cleaned, then a steel mesh sleeve is placed inside the insertion slot 11, slurry is added, and finally the insertion section 2 is inserted into the insertion slot 11, so that the steel mesh sleeve is wrapped around the periphery of the insertion section 2. After the slurry solidifies and forms the post-curing layer 12, its structural stability is further improved.

[0039] The grout is mainly composed of cement-based materials with added epoxy resin, steel fiber, ceramsite, carbon fiber and other materials to increase its crack resistance and tensile strength, and ensure the service life of the post-curing layer 12 and the concrete pile.

[0040] The specific embodiments are merely explanations of this utility model and are not intended to limit it. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this utility model.

Claims

1. A grouted rivet of concrete, characterized by: It includes a fixed section (1) and a plug-in section (2). The plug-in section (2) has an end (3) at its front end. The cross-sectional diameter of the end (3) is larger than that of the plug-in section (2). The end (3) has several inclined grooves (4) evenly distributed along its periphery. The inclined grooves (4) penetrate the upper and lower surfaces of the end (3).

2. A grouted rivet of claim 1, wherein: The front end of the end (3) is provided with a spherical surface (5).

3. A grouted, frictional, pull-riveted concrete according to claim 1, wherein: The fixed section is provided with several operating planes (6) on its circumference below the external thread.

4. The grouted, frictional, pull-riveted concrete of claim 1, wherein: The circumferential sidewall of the plug section (2) is provided with several ratchet ring teeth (7) at equal intervals.

5. A concrete pile connection structure using the grouting rivet of any one of claims 1 to 4, characterized by: The concrete pile (8) has an upper steel plate (9) and a lower steel plate (10) fixedly connected to its two ends respectively. The surface of the lower steel plate (10) is fixedly connected with a grouting rivet. The upper steel plate (9) has an insertion groove (11) for inserting the insertion section (2). The insertion groove (11) extends into the interior of the concrete pile (8). The insertion groove (11) and the insertion section (2) are filled with a post-curing layer (12).

6. A concrete pile connection structure according to claim 5, characterised in that: The post-curing layer (12) is formed after being fixed by cement slurry.

7. A concrete pile connection structure according to claim 6, characterised in that: The lower steel plate (10) has a threaded groove (13) that runs through its upper and lower surfaces, and the circumferential sidewall of the end of the fixed section (1) is provided with an external thread (14) that matches the threaded groove (13).

8. A concrete pile connection structure according to claim 7, characterised in that: The threaded grooves (13) are provided in multiple ways and are evenly arranged along the outer circumference of the surface of the lower steel plate (10). The insertion grooves (11) are provided in multiple ways and correspond to the threaded grooves (13).

9. A concrete pile connection structure according to claim 8, characterised in that: The post-curing layer (12) is provided with a reinforcing layer (15), which is a steel mesh sleeve.

10. A concrete pile connection structure according to claim 9, characterised in that: The inner circumferential wall of the insertion slot (11) is provided with an internal thread (16).

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