Precast pile splicing structure

Abstract

The utility model discloses a precast pile splicing structure which comprises two connecting bins connected with two precast piles respectively. The two connecting bins are symmetrically arranged relative to the precast pile connecting face, hollow spaces are formed in the connecting bins, the hollow spaces of the two connecting bins communicate with the precast pile connecting face, and limiting edges are arranged on the inner walls of the connecting bins. A plurality of expansion bolts used for being connected with the precast piles are inserted into the wall faces, away from the connecting faces of the precast piles, of the connecting bins in a threaded mode, every two expansion bolts connected with the two connecting bins are connected through a connecting mechanism, a plurality of liquid injection holes communicated with the hollow space are formed in the outer walls of the connecting bins, and the liquid injection holes and the expansion bolts are arranged at intervals. And insertion rods matched with the liquid injection holes are inserted into the liquid injection holes. The precast pile splicing structure is reasonable in structural design, good in anti-rotation performance, convenient and fast to construct and operate and good in application prospect, and the phenomenon that the connecting position is loosened due to rotation of the precast pile is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of pile connection structures, in particular to a prefabricated pile connection structure, and in particular to a prefabricated pile connection structure with good anti-rotation capability. Background Art

[0002] Precast pile connection is a construction technology in civil engineering, which is used to connect two precast piles (usually reinforced concrete piles) at the construction site to form a longer pile wall or pile foundation. This method is often used in buildings, bridges, docks, dams and other projects to increase soil bearing capacity or resist groundwater pressure.

[0003] When connecting two precast piles, expansion bolts and flanges are often used to connect the two precast piles. In order to further improve the bonding strength between precast columns, CN 210827447 U discloses a precast pile connection structure, in which a connecting rod is clamped in a fixed tube at the end faces of the precast piles that abut against each other, thereby connecting the ends of the precast piles and making the connection between the precast piles more stable. However, the existing precast column connection structures all have the problem of poor anti-rotation performance. In actual construction, if one precast column is inserted into the soil and the other precast pile rotates, the precast pile in the soil will be absorbed by the surrounding soil to exert a force that hinders its rotation, which may damage the expansion bolts or other connection structures, causing the connection between the two precast piles to loosen, affecting the construction effect.

[0004] Therefore, it is of great practical significance to develop a prefabricated pile-connected pile structure with good anti-rotation ability. Utility Model Content

[0005] Since the prior art has the above-mentioned defects, the utility model provides a method to overcome the existing defects.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A prefabricated pile connection structure, comprising two connection chambers respectively connected to two prefabricated piles;

[0008] The two connection chambers are arranged symmetrically with respect to the connection surface of the precast piles, a hollow space is opened in the connection chamber and the hollow spaces of the two connection chambers are connected to the connection surface of the precast piles, and the inner walls of the connection chambers are provided with limiting edges (the existence of the limiting edges enables the solidified concrete column blocks to have large diameters at both ends and small diameters in the middle after the concrete is injected into the connection chamber and solidified, thereby improving the bonding strength of the two connection chambers);

[0009] A plurality of expansion bolts for connecting to the precast piles are threadedly inserted on the wall surface of the connecting bin away from the connecting surface of the precast piles, and the two expansion bolts respectively connected to the two connecting bins are connected in pairs through a connecting mechanism. A plurality of injection holes connected to the hollow space are opened on the outer wall of the connecting bin, and the injection holes and the expansion bolts are arranged at intervals, and the injection holes are all inserted with insertion rods matching the injection holes.

[0010] The precast pile connection structure of the utility model has a reasonable structural design. The connection chamber is connected to the precast pile by means of expansion bolts. After the connection chambers are butt-jointed, concrete is injected into the interior of the connection chambers through the injection holes, and then the insertion rods are inserted into the injection holes. After the concrete solidifies, the concrete block in the connection chamber cooperates with the connection mechanism of the insertion rods and the connection expansion bolts to form a connection portion. Compared with the traditional flange / bolt installation method, its anti-rotation performance has been greatly enhanced, and the connection will not become loose due to the rotation of the precast piles, and the application prospect is good.

[0011] As the preferred technical solution:

[0012] In the prefabricated pile-to-pile structure as described above, a longitudinal through slot for the plug rod is provided in the width direction of the plug rod and passes through the slot.

[0013] In the prefabricated pile-to-pile structure as described above, one end of the insertion rod in the length direction is provided with an insertion rod hand-holding groove.

[0014] In the prefabricated pile-to-pile structure as described above, the connection mechanism is a connection pipe, and the two ends of the connection pipe are respectively provided with a cylindrical connection part I and a cylindrical connection part II, and the inner wall of the cylindrical connection part I is provided with an internal thread structure matching the expansion bolt, and the cylindrical connection part II matches the expansion bolt and the expansion bolt is inserted into the cylindrical connection part II.

[0015] In the prefabricated pile-to-pile structure as described above, the connection compartment is an annular structure.

[0016] In the prefabricated pile-to-pile structure as described above, the expansion bolts are evenly distributed around the circumference of the connection bin;

[0017] The injection holes are evenly distributed around the circumference of the connecting chamber.

[0018] In the prefabricated pile-to-pile structure as described above, the connection compartment is a circular ring structure.

[0019] In the precast pile connection structure as described above, the limiting edge is located on the side of the connection chamber close to the precast pile connection surface.

[0020] The installation steps of the above-mentioned prefabricated pile-connecting structure are as follows:

[0021] The user inserts several expansion bolts into the surfaces of the two connecting chambers and then into one end of the two precast piles respectively, then connects the two connecting chambers together, injects concrete into the interior of the two connecting chambers through several injection holes, and finally slides several insertion rods into the several injection holes respectively. After the concrete solidifies, the operation is completed. In the subsequent use process, the lower precast rod is absorbed in the soil, while the rotation of the upper precast rod will be hindered by several insertion rods and the concrete blocks on the inner walls of the two connecting chambers. Compared with the traditional flange / bolt installation method, under the action of the concrete block and several insertion rods, the ability of the two precast rods to resist relative rotational force becomes stronger, which fully reflects the practicality of the device.

[0022] The above technical solution is only a feasible technical solution of the present utility model, and the protection scope of the present utility model is not limited thereto. Those skilled in the art can reasonably adjust the specific design according to actual needs.

[0023] The above utility model has the following advantages or beneficial effects:

[0024] (1) The precast pile connection structure of the utility model has a reasonable structural design. The connection chamber is connected to the precast pile by using expansion bolts. After the connection chamber is connected, concrete is injected into the connection chamber through the injection hole, and then the insertion rod is inserted into the injection hole. After the concrete solidifies, the concrete block in the connection chamber cooperates with the connection mechanism of the insertion rod and the connection expansion bolt to form a connection part. Compared with the traditional flange / bolt installation method, its anti-rotation performance has been greatly enhanced, and the connection will not be loosened due to the rotation of the precast pile;

[0025] (2) The prefabricated pile-connecting structure of the utility model has a simple structure, readily available materials, easy on-site processing and low cost, and has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention and its features, appearance and advantages will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn to scale, and the emphasis is on illustrating the subject matter of the present invention.

[0027] Figure 1 and 2 They are schematic diagrams of the external structure of the prefabricated pile connection structure of the utility model at different viewing angles;

[0028] Figure 3 for Figure 1 A half-section view of

[0029] Figure 4 for Figure 1 Relative to Figure 3 Half section view at a vertical angle;

[0030] Among them, 1-connecting bin, 2-limiting edge, 3-expansion bolt, 4-liquid injection hole, 5-connecting mechanism, 501-connecting pipe, 502-cylindrical connecting part II (socket), 6-insertion rod, 7-insertion rod longitudinal groove, 8-insertion rod holding groove. DETAILED DESCRIPTION

[0031] The structure of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but is not intended to limit the present invention.

[0032] Example 1

[0033] A prefabricated pile-to-pile structure, such as Figures 1 to 4 As shown, it includes two connection chambers 1 respectively connected to two prefabricated piles, and the connection chamber 1 is a circular ring structure;

[0034] The two connection chambers 1 are arranged symmetrically with respect to the connection surface of the precast piles. A hollow space is opened in the connection chamber 1 and the hollow spaces of the two connection chambers 1 are connected to the connection surface of the precast piles. The inner walls of the connection chambers 1 are provided with limit edges 2, and the limit edges 2 are located on the side of the connection chamber 1 near the connection surface of the precast piles. In this way, after concrete is injected into the two connection chambers 1 and solidified, the solidified concrete columnar blocks have large diameters at both ends and a small diameter in the middle, which can achieve the fixation of the two connection chambers 1;

[0035] A plurality of expansion bolts 3 for connecting to the precast piles are threadedly inserted on the wall surface of the connection bin 1 away from the connection surface of the precast piles. The two expansion bolts 3 respectively connected to the two connection bins are connected in pairs through a connection mechanism 5. The connection mechanism 5 is a connection pipe 501. The two ends of the connection pipe 501 are respectively provided with a cylindrical connection part I and a cylindrical connection part II502. The inner wall of the cylindrical connection part I is provided with an internal thread structure matching the expansion bolts 3. The cylindrical connection part II502 matches the expansion bolts 3 and the expansion bolts 3 are inserted on the cylindrical connection part II502. The expansion bolts 3 are evenly distributed around the circumference of the connection bin 1.

[0036] A plurality of injection holes 4 connected to the hollow space are provided on the outer wall of the connecting bin 1, and the injection holes 4 are evenly distributed around the circumference of the connecting bin 1. The injection holes 4 and the expansion bolts 3 are arranged at intervals. Insertion rods 6 matching the injection holes 4 are inserted at the injection holes 4. A longitudinal insertion rod groove 7 penetrating the slot is provided in the width direction of the insertion rod 6. After the concrete solidifies, concrete will be formed on the inner walls of the plurality of longitudinal insertion rod grooves 7, thereby further applying force to the interior of the concrete columnar block. A insertion rod hand-holding groove 8 is provided at one end of the insertion rod 6 in the length direction, so that the operator can hold the insertion rod and insert it into the injection hole 4 conveniently.

[0037] Example 2

[0038] A prefabricated pile-to-pile structure is basically the same as the first embodiment, except that the insertion rod 6 does not have the insertion rod longitudinal through groove 7 and the insertion rod hand-holding groove 8.

[0039] It has been verified that the precast pile connection structure of the utility model has a reasonable structural design. The connection chamber is connected to the precast pile by means of expansion bolts. After the connection chamber is docked, concrete is injected into the interior of the connection chamber through the injection hole, and then the insertion rod is inserted into the injection hole. After the concrete solidifies, the concrete block in the connection chamber cooperates with the connection mechanism of the insertion rod and the connection expansion bolt to form a connection part. Compared with the traditional flange / bolt installation method, its anti-rotation performance has been greatly enhanced, and the connection will not become loose due to the rotation of the precast pile; the structure is simple, the material is easily available, it is easy to process on site, and the cost is low, and the application prospect is good.

[0040] Those skilled in the art should understand that those skilled in the art can implement variations by combining the prior art and the above embodiments, which will not be described in detail here. Such variations do not affect the essential content of the present utility model, and will not be described in detail here.

[0041] The above describes the preferred embodiments of the utility model. It should be understood that the utility model is not limited to the above-mentioned specific implementation methods, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the utility model without departing from the scope of the technical solution of the utility model, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the utility model. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of protection of the technical solution of the utility model.

Claims

1. A prefabricated pile-connected pile structure, characterized in that: It includes two connection chambers respectively connected with two prefabricated piles; The two connection chambers are arranged symmetrically with respect to the connection surface of the precast piles, a hollow space is opened in the connection chamber and the hollow spaces of the two connection chambers are connected to the connection surface of the precast piles, and the inner walls of the connection chambers are provided with limit edges; A plurality of expansion bolts for connecting to the precast piles are threadedly inserted on the wall surface of the connecting bin away from the connecting surface of the precast piles, and the two expansion bolts respectively connected to the two connecting bins are connected in pairs through a connecting mechanism. A plurality of injection holes connected to the hollow space are opened on the outer wall of the connecting bin, and the injection holes and the expansion bolts are arranged at intervals, and the injection holes are all inserted with insertion rods matching the injection holes.

2. A prefabricated pile-connected pile structure according to claim 1, characterized in that: The width direction of the insertion rod is provided with an insertion rod longitudinal through groove which penetrates the slot.

3. The prefabricated pile-connected pile structure according to claim 1, characterized in that: One end of the insertion rod in the length direction is provided with an insertion rod hand-holding groove.

4. The prefabricated pile-connected structure according to claim 1, characterized in that: The connecting mechanism is a connecting pipe, and the two ends of the connecting pipe are respectively provided with a cylindrical connecting part I and a cylindrical connecting part II. The inner wall of the cylindrical connecting part I is provided with an internal thread structure matching the expansion bolt, and the cylindrical connecting part II matches the expansion bolt and the expansion bolt is inserted into the cylindrical connecting part II.

5. The prefabricated pile-connected structure according to claim 1, characterized in that: The connecting chamber is an annular structure.

6. The prefabricated pile-connected structure according to claim 5, characterized in that: The expansion bolts are evenly distributed around the circumference of the connection bin; The injection holes are evenly distributed around the circumference of the connecting chamber.

7. The prefabricated pile-connected pile structure according to claim 5, characterized in that: The connecting chamber is a circular ring structure.

8. The prefabricated pile-connected structure according to claim 1, characterized in that: The limit edge is located on the side of the connection chamber close to the connection surface of the precast pile.

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