Precast pile opening connecting structure

Abstract

The utility model discloses a precast pile opening connecting structure which comprises an upper pile body, a lower pile body and a connecting piece with a damping effect. The end opening of the upper pile body and the end opening of the lower pile body are each provided with an annular step facilitating assembly, multiple sets of assembly grooves are formed in the annular steps, first fixing bolts are installed in the assembly grooves, and the upper pile body, the lower pile body and the connecting pieces are fixed through the first fixing bolts. The hidden assembling groove is formed, the fixing bolt used for being connected with the pile opening is arranged in the assembling groove, the outer side of the assembling groove is sealed through the sealing ring, further, the outer side of the sealing ring is coated with the waterproof coating, the connecting structure can be isolated from water, and therefore the fixing bolt is effectively prevented from being rusted; furthermore, the connecting piece with the damping effect is arranged, the good damping and shock insulation purposes can be achieved through a lead core, a rubber buffer layer and the like in the connecting piece, and therefore the safety of the whole structure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of precast pile installation, in particular to a connecting structure for the mouth of a precast pile. Background Technique

[0002] During the foundation construction process, the pile body of the required precast pile is generally long. However, it is inconvenient to transport an overly long precast pile. Therefore, in actual construction, multiple precast piles are often connected to form a complete pile body to reach the length required for construction.

[0003] For example, a connecting structure for a precast pile disclosed in the Chinese authorized patent CN220284784 U can quickly connect the mouths of precast piles through through holes opened at the ports of the precast piles and by means of lead screws, nuts and connecting pieces, and the firmness effect is quite reliable.

[0004] After careful analysis of the above patent technology by the inventor of the present invention and in combination with the actual situation of this industry, it is considered that the above patent technology has the following deficiencies to be improved. Firstly, both the lead screw and the nut are in an open state, and it is very easy to come into contact with moisture in the construction site, thus rusting and affecting the service life of the connecting structure. Secondly, there is a lack of effective shock-absorbing elements at the connection of the pile mouths. When the building structure borne by the precast pile vibrates, the precast pile cannot effectively reduce the vibration hazard, which may cause dislocation or even fracture at the connection of the precast pile mouths, affecting the safety of the entire building structure. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the utility model provides a connecting structure for the mouth of a precast pile, which solves the problems of easy rusting and poor shock-absorbing effect of the existing connecting structure for the mouth of a precast pile.

[0007] (2) Technical Solutions

[0008] To achieve the above object, the utility model provides the following technical solution: A connecting structure for the mouth of a precast pile includes an upper pile body, a lower pile body and a connecting piece with a shock-absorbing effect.

[0009] Circular steps for convenient assembly are provided at the ports of the upper pile body and the lower pile body. Multiple sets of assembly grooves are opened on the circular steps, and first fixing bolts are installed in the assembly grooves to fix the upper pile body, the lower pile body and the connecting piece.

[0010] A sealing ring is installed on the circular step. The sealing ring is fixed to the side of the circular step by a second fixing bolt. A waterproof coating is provided on the outer periphery of the sealing ring, and the outer edge of the waterproof coating is flush with the outer walls of the upper pile body and the lower pile body.

[0011] As a further preference, the sealing ring is formed by clamping two semi-circular half-rings, and the end face width of the sealing ring can cover the entire assembly groove.

[0012] As a further preference, the waterproof coating is an asphalt coating.

[0013] As a further preference, the connecting member includes upper and lower connecting steel plates, a shock-absorbing layer in the middle, and a lead core at the axis.

[0014] As a further preference, the shock-absorbing layer includes an outermost armored layer, a connecting layer in the second outermost layer, a threaded groove for the first fixing bolt to pass through is provided in the connecting layer, and a shock-absorbing component is further included between the lead core and the connecting layer.

[0015] As a further preference, the shock-absorbing component includes sealing plates on both the upper and lower sides, a rubber buffer layer is filled between the two sealing plates, and multiple groups of support steel plates are inserted at intervals in the rubber buffer layer.

[0016] (III) Beneficial effects

[0017] The present utility model provides a connecting structure for the pile mouth of a precast pile. It has the following beneficial effects:

[0018] For this connecting structure of the precast pile mouth, by setting a hidden assembly groove, the fixing bolts for connecting the pile mouth are placed inside the assembly groove, and the outside of the assembly groove is sealed by a sealing ring. Further, by coating a waterproof coating on the outside of the sealing ring, the connecting structure can be separated from moisture, thus effectively avoiding the corrosion of the fixing bolts; furthermore, by setting a connecting member with a shock-absorbing effect, good shock-absorbing and vibration-isolating purposes can be achieved through the lead core, rubber buffer layer, etc. inside it, thereby improving the safety of the overall structure. Description of the drawings

[0019] Figure 1 It is a schematic structural diagram of the present utility model;

[0020] Figure 2 It is an exploded view of the partial structure of the present utility model;

[0021] Figure 3 It is a sectional view of the structure of the connecting member of the present utility model;

[0022] Figure 4 It is an enlarged view of the structure at A of the present utility model.

[0023] In the figure: 1. Upper pile body; 2. Lower pile body; 3. Connecting piece; 31. Connecting steel plate; 32. Shock-absorbing layer; 321. Armor layer; 322. Connecting layer; 323. Sealing plate; 324. Rubber buffer layer; 325. Supporting steel plate; 33. Lead core; 4. Annular step; 5. Assembly groove; 6. First fixing bolt; 7. Sealing ring; 8. Second fixing bolt; 9. Waterproof coating. Specific implementation manner

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] As Figure 1-2 shown, the present invention provides a technical solution: a connecting structure for the pile mouth of a precast pile, including an upper pile body 1, a lower pile body 2, and a connecting piece 3 with a shock-absorbing effect.

[0026] As Figure 3 shown, the connecting piece 3 includes connecting steel plates 31 on the upper and lower layers, the connecting steel plates 31 mainly serve the purpose of bearing the load, and a shock-absorbing layer 32 in the middle, and also includes a lead core 33 at the axis. The main function of the lead core 33 is to provide plasticity and anti-creep performance, and can absorb and dissipate the energy from external forces to protect the structure from damage.

[0027] As Figure 3 shown, the shock-absorbing layer 32 includes an armor layer 321 (cast iron material can be used) on the outermost side, and a connecting layer 322 on the second outermost layer. Threaded grooves for the first fixing bolt 6 to pass through are provided in the connecting layer 322, and a shock-absorbing component is also included between the lead core 33 and the connecting layer 322.

[0028] As Figure 3 shown, the shock-absorbing component includes sealing plates 323 on the upper and lower sides, a rubber buffer layer 324 is filled between the two sealing plates 323, and multiple groups of supporting steel plates 325 are inserted at intervals in the rubber buffer layer 324. The rubber buffer layer 324 can absorb vibrations, and the supporting steel plates 325 can support the entire shock-absorbing component to prevent deformation.

[0029] As Figure 4 shown, annular steps 4 for convenient assembly are provided at the ports of the upper pile body 1 and the lower pile body 2. Multiple groups of assembly grooves 5 are provided on the annular steps 4, and first fixing bolts 6 are installed in the assembly grooves 5. The first fixing bolts 6 fix the upper pile body 1, the lower pile body 2, and the connecting piece 3.

[0030] like Figure 2 , 4 As shown, a sealing ring 7 is installed on the annular step 4. The sealing ring 7 is formed by two semicircular half rings clamped together, and the end face width of the sealing ring 7 can cover the entire assembly groove 5. The sealing ring 7 is fixed to the side of the annular step 4 by a second fixing bolt 8. The periphery of the sealing ring 7 is provided with a waterproof coating 9, which is an asphalt coating. The outer edge of the waterproof coating 9 is flush with the outer wall of the upper pile body 1 and the lower pile body 2.

[0031] Meanwhile, the contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field.

[0032] During use, when assembling the upper pile body 1 and the lower pile body 2, first place the connecting piece 3 between the upper pile body 1 and the lower pile body 2, and ensure that the assembly groove 5 is aligned up and down, then screw the first fixing bolt 6 into the assembly groove 5, and fix it at both ends with locking nuts, thereby preliminarily completing the pile mouth connection.

[0033] Afterwards, two semicircular sealing rings 7 are clamped on the annular step 4 and closed into a complete circular ring to be clamped outside the annular step 4, and the sealing ring 7 is fixed to the annular step 4 by the second fixing bolt 8. The sealing ring 7 can completely cover the assembly groove 5. Furthermore, by coating a layer of asphalt waterproof coating 9 on the outer side of the sealing ring 7, it can prevent moisture from entering the assembly groove 5 and corroding the first fixing bolt 6.

[0034] To sum up, the prefabricated pile-to-pile connection structure, by providing a hidden assembly groove, the fixing bolts for connecting the pile mouth are built into the assembly groove, and the outer side of the assembly groove is sealed by a sealing ring. Furthermore, by applying a waterproof coating on the outer side of the sealing ring, the connection structure can be separated from the water, thereby effectively preventing the fixing bolts from rusting; further, by providing a connector with a shock-absorbing effect, a good shock-absorbing and seismic isolation purpose can be achieved through the lead core, rubber buffer layer, etc. inside it, thereby improving the safety of the overall structure.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A prefabricated pile opening connection structure, characterized in that: It comprises an upper pile body (1), a lower pile body (2) and a connecting piece (3) with a shock-absorbing effect; An annular step (4) is provided at the ends of the upper pile body (1) and the lower pile body (2) for facilitating assembly. The annular step (4) is provided with a plurality of assembly grooves (5). First fixing bolts (6) are installed in the assembly grooves (5). The first fixing bolts (6) fix the upper pile body (1), the lower pile body (2) and the connecting piece (3). A sealing ring (7) is installed on the annular step (4), and the sealing ring (7) is fixed to the side of the annular step (4) by a second fixing bolt (8). A waterproof coating (9) is arranged on the periphery of the sealing ring (7), and the outer edge of the waterproof coating (9) is flush with the outer walls of the upper pile body (1) and the lower pile body (2).

2. A prefabricated pile opening connection structure according to claim 1, characterized in that: The sealing ring (7) is formed by clamping two semicircular half rings, and the end surface width of the sealing ring (7) can cover the entire assembly groove (5).

3. The prefabricated pile opening connection structure according to claim 1, characterized in that: The waterproof coating (9) is an asphalt coating.

4. The prefabricated pile opening connection structure according to claim 1, characterized in that: The connecting member (3) comprises two layers of connecting steel plates (31) and an upper and lower layer, a shock absorbing layer (32) located in the middle, and a lead core (33) located at the axis.

5. The prefabricated pile opening connection structure according to claim 4, characterized in that: The shock-absorbing layer (32) comprises an outermost armor layer (321) and a connecting layer (322) located at the second outer layer, wherein a thread groove is provided in the connecting layer (322) for the first fixing bolt (6) to pass through, and further comprises a shock-absorbing component located between the lead core (33) and the connecting layer (322).

6. A prefabricated pile opening connection structure according to claim 5, characterized in that: The shock absorbing assembly comprises sealing plates (323) on the upper and lower sides, a rubber buffer layer (324) is filled between the sealing plates (323) on the two sides, and a plurality of groups of supporting steel plates (325) are inserted at intervals in the rubber buffer layer (324).

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