Mechanical connection precast pile
By setting up a structure of outer sleeve, inner sleeve and clamp on the prefabricated pile, the problem of lack of integrated connection in the existing mechanical connection methods is solved, the stability and construction efficiency of the prefabricated piles are improved, and the resistance to being drilled into the foundation is reduced.
Patent Information
- Application Number
- CN202421807933.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-07-29
AI Technical Summary
The existing mechanical connection prefabricated piles are mainly concentrated in the connection at the end plates of the two sections of prefabricated piles, which lacks the integrity of the connection and insufficient stability.
A mechanically connected prefabricated pile is designed. By setting an outer sleeve and an inner sleeve on the pile body and the end plate, and using the cooperation of grooves and annular protrusions, the connection stability with the pile body is strengthened; the connection stability with the end plate is strengthened through the end plate by snapping into the inner groove; the clamping structure of the clamp is used to form an integral connection between the pile body and the end plate of the adjacent two prefabricated piles.
It effectively improves the overall stability between prefabricated piles, reduces the workload and time during prefabricated piles, improves work efficiency, and reduces the resistance of prefabricated piles when they are driven into the foundation.
Smart Images
Figure CN222847340U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of prefabricated piles, in particular to a mechanically connected prefabricated pile. Background Art
[0002] Concrete precast piles have the advantages of low production cost, ability to withstand large loads, durability, fast construction speed, simple construction, and low technical difficulty. They are widely used in construction projects such as buildings, roads, bridges, and docks. During the construction process, it is often necessary to use welding or mechanical structure connection to connect multiple precast piles in sequence. Among them, the welding method generally involves driving one section of the precast column into the foundation, lifting the other section of the precast pile above the first section of the precast pile, and after alignment, the end plates of the two sections of the precast piles are in contact, and the operator welds at the end plates of the two sections of the precast piles. This method is time-consuming and labor-intensive, and requires waiting for the weld to cool. The work efficiency is low and the connection quality is affected by the level of the welder. The mechanical connection method can effectively reduce the workload, shorten the required working time, and improve work efficiency, but the existing mechanical connection method mainly focuses on the connection at the end plates of the two sections of the precast piles, lacks the integral connection with the pile body, resulting in poor connection integrity. When the precast pile is pressed down to the ground, it is stressed, the connection moves and shifts, and the connection stability deteriorates. Utility Model Content
[0003] In view of this, in order to solve the above technical problems, the utility model proposes a mechanical connection precast pile that can effectively reduce the workload when connecting precast piles, shorten working time, improve work efficiency, and improve the overall stability between the connected precast piles.
[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:
[0005] A mechanically connected prefabricated pile, comprising:
[0006] A pile body, wherein a steel cage is buried inside the pile body; grooves along the circumferential direction are provided on the outer side walls at the upper and lower ends of the pile body;
[0007] End plates, the upper and lower ends of the pile body are provided with the end plates; the outer edge of the end plate on the side facing the pile body is provided with a circle of embedded grooves;
[0008] An outer sleeve, which is sleeved on the outer wall at the upper and lower ends of the pile body, and an annular protrusion embedded in the groove is provided on the inner wall of the outer sleeve; the end of the outer sleeve is inserted into the inner groove, and the end of the outer sleeve is a slot structure;
[0009] The clamp has an annular clamping block at both the upper and lower ends of the inner side wall thereof, which can be inserted into the clamping groove structure at the end of the outer clamp. The clamp connects the end plates of the upper and lower sections of the precast pile into one piece by means of the annular clamping block; the clamp includes two semi-annular clamps butted together to form an annular shape.
[0010] The outer sleeve is nested in the pile body and the end plate at the same time, and the connection stability with the pile body is strengthened by the cooperation of the groove and the annular protrusion, and the connection stability with the end plate is strengthened by the end being inserted into the embedded groove. At the same time, the groove structure at its end is used to cooperate with the clamp to form an integral connection between the pile body and the end plate of the two adjacent prefabricated piles, avoiding the problem of poor stability that only relies on the connection of the end plates of the two adjacent prefabricated piles. The clamp is composed of two semi-annular clamps that are butt-jointed into a ring, which is easy to assemble and buckle.
[0011] Furthermore, there are at least two grooves on the outer side wall at the end of the pile body, and the outer sleeve is provided with the same number of annular protrusions, which are embedded in the grooves to enhance the connection stability between the outer sleeve and the pile body.
[0012] Furthermore, the butt joint ends of the two semi-annular clamps are provided with a butt joint plate that can be overlapped up and down, and the butt joint plate is provided with bolt holes, and the two semi-annular clamps are butt jointed and fixed by bolts.
[0013] After the two semi-annular clamps are inserted into the groove structure at the end of the outer clamp, they are connected to form a ring. The connecting plates of the two semi-annular clamps overlap up and down, and the bolts are inserted into the bolt holes and locked and fixed. Here, the two semi-annular clamps can also be fixed by welding the connecting parts.
[0014] Furthermore, a positioning block is provided on the outer ring side wall of the end plate; and a positioning notch corresponding to the positioning block and used for inserting the positioning block is provided on the inner side wall of the clamp.
[0015] After the clamp is inserted into the clamping groove structure at the end of the outer clamp, the positioning block is inserted into the positioning groove, which can locate the position of the clamp in the circumferential direction and reduce the risk of accidental sliding of the clamp in the circumferential direction.
[0016] Furthermore, it also includes an inner hoop; the inner side wall at the upper and lower ends of the pile body is also provided with a circumferential groove, the inner hoop is arranged on the inner side wall at the upper and lower ends of the pile body, and the outer side wall of the inner hoop is provided with an annular protrusion embedded in the groove.
[0017] The setting of the inner hoop strengthens the transverse shear resistance at the end of the pile body.
[0018] Furthermore, there are at least two grooves on the inner side wall at the end of the pile body, and the inner hoop is provided with the same number of annular protrusions.
[0019] Furthermore, the upper and lower ends of the clamp are provided with a resistance reducing member with an annular conical structure extending in the axial direction and gradually approaching the central axis.
[0020] The ring-conical structural design of the resistance-reducing component can reduce the resistance when the precast pile is driven into the foundation.
[0021] Compared with the prior art, the mechanically connected prefabricated piles described in the utility model have the following advantages:
[0022] (1) The mechanical connection prefabricated pile structure described in the utility model is reasonably designed. The outer sleeve is embedded in the pile body and the end plate at the same time. The connection stability with the pile body is strengthened by the cooperation of the groove and the annular protrusion. The connection stability with the end plate is strengthened by the end being inserted into the embedded groove, so as to realize the connection between the outer sleeve, the pile body and the end plate. Then, the clamping groove structure at the end is used to cooperate with the clamping hoop for clamping, so as to form an integral connection between the pile body and the end plate of two adjacent prefabricated piles. This solves the problem that the current mechanical connection method mainly focuses on the connection at the end plates of the two prefabricated piles and lacks an integral connection with the pile body, thereby improving the connection stability.
[0023] (2) The connection between the outer hoop of the mechanically connected prefabricated pile and the pile body and the end plate is completed during the pile making process. The connection between the prefabricated piles on site only requires that the two sections of the prefabricated piles be aligned and contacted, the two semi-annular clamps be inserted into the clamping groove structure of the outer hoop, and then the two semi-annular clamps are butt-jointed and fixed to complete the connection of the two sections of the prefabricated piles, which effectively reduces the workload of butt-jointing the prefabricated piles, shortens the working time, and improves the working efficiency.
[0024] (3) A positioning block and a positioning notch are provided between the clamp of the mechanically connected prefabricated pile and the clamping groove structure at the end of the outer clamp in the utility model, which can reduce the risk of accidental sliding of the clamp in the circumferential direction and further improve the stability of the connection; the annular conical structure design of the resistance reduction component at the upper and lower ends of the clamp can effectively reduce the resistance of the pile body during the process of being driven into the foundation, and reduce the influence of the surrounding soil on the clamp when the prefabricated pile is pressed down to the ground. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:
[0026] Figure 1 This is a schematic diagram of the structure of the mechanically connected prefabricated piles described in Example 1 of the utility model;
[0027] Figure 2 This is a schematic diagram of the structure of the mechanically connected prefabricated piles after connection according to Example 1 of the utility model;
[0028] Figure 3 This is a schematic diagram of the top view of the clamp described in Example 1 of the utility model;
[0029] Figure 4 It is a schematic diagram of the top view of the structure of the clamp described in Example 1 of the utility model being disassembled into two semi-annular clamps;
[0030] Figure 5 This is a schematic diagram of the side structure of the clamp described in Example 1 of the utility model;
[0031] Figure 6 This is a schematic diagram of the structure of the mechanically connected prefabricated piles described in Example 2 of the utility model;
[0032] Figure 7 This is a schematic diagram of the structure of the mechanically connected prefabricated piles after connection according to Example 2 of the utility model;
[0033] Figure 8 This is a schematic diagram of the structure of the mechanically connected prefabricated piles after connection according to Example 3 of the utility model;
[0034] Fig. 9 This is a schematic diagram of the internal structure of the clamp described in Example 3 of the utility model;
[0035] Fig.10 This is a schematic diagram of the top view of the clamp described in Example 3 of the utility model;
[0036] Fig.11 This is a schematic diagram of the structure of the mechanically connected prefabricated piles after connection as described in Example 4 of the utility model.
[0037] Description of reference numerals:
[0038] 1-pile body, 2-end plate, 3-outer hoop, 4-clamp, 5-inner hoop, 6-embedded groove, 7-annular protrusion, 8-slot structure, 9-annular clamp, 10-semi-annular clamp, 11-butt plate, 12-positioning block, 13-positioning notch, 14-resistance reduction component. DETAILED DESCRIPTION
[0039] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0040] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.
[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.
[0042] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.
[0043] Example 1
[0044] like Figures 1 to 5 As shown,
[0045] A mechanically connected prefabricated pile comprises a pile body 1, an end plate 2, an outer hoop 3, a clamp 4, and an inner hoop 5;
[0046] The pile body 1 is a concrete pile body with a steel cage buried inside; the inner and outer walls at the upper and lower ends of the pile body 1 are provided with grooves along the circumferential direction, and each groove has at least two grooves;
[0047] The upper and lower ends of the pile body 1 are provided with end plates 2; the outer edge of the end plate 2 facing the pile body 1 is provided with a circle of embedded grooves 6;
[0048] The outer sleeve 3 is sleeved on the outer wall at the upper and lower ends of the pile body 1, and the inner wall of the outer sleeve 3 is provided with two annular protrusions 7 embedded in two grooves; the end of the outer sleeve 3 is inserted into the inner groove 6, and the end of the outer sleeve 3 is a slot structure 8;
[0049] The inner side wall of the clamp 4 is provided with an annular clamp block 9 which can be clamped into the clamping groove structure 8 at the end of the outer clamp 3 at both ends. The clamp 4 connects the upper and lower end plates 2 of the precast pile into one piece by means of the annular clamp block 9. The clamp 4 includes two semi-annular clamps 10 butted together to form an annular shape. The butt ends of the two semi-annular clamps 10 are provided with a butt plate 11 which can be overlapped up and down. The butt plate 11 is provided with bolt holes. The two semi-annular clamps 10 are butt-jointed and fixed by bolts.
[0050] The inner hoop 5 is arranged on the inner side wall at the upper and lower ends of the pile body 1, and two annular protrusions 7 embedded in two grooves are arranged on the outer side wall of the inner hoop 5.
[0051] The working principle of the mechanically connected prefabricated piles described in this embodiment is as follows:
[0052] The connection between the outer hoop 3, the inner hoop 5, the pile body 1 and the end plate 2 is completed during the pile making process. When connecting two sections of precast piles on site, one section of the precast column is driven into the foundation, and the other section of the precast pile is lifted above the first section of the precast pile. After alignment, the end plates 2 of the two sections of the precast piles are in contact and fit, and the two semi-annular clamps 10 are inserted into the end groove structure 8 of the outer hoop 3 to form a ring. The butt joint plates 11 of the two semi-annular clamps 10 overlap up and down, and the bolts are inserted into the bolt holes and locked to complete the fixation.
[0053] Example 2
[0054] like Figure 6 and 7 As shown, based on Example 1, the difference from Example 1 is that: a positioning block 12 is provided on the outer ring side wall of the end plate 2; and a positioning notch 13 corresponding to the positioning block 12 and used for inserting the positioning block 12 is provided on the inner side wall of the clamp 4.
[0055] By setting the positioning block 12 and the positioning slot 13, the position of the clamp 4 in the circumferential direction can be positioned, reducing the risk of accidental sliding of the clamp 4 in the circumferential direction; during the assembly process, when the two semi-annular clamps 10 are inserted into the end slot structure 8 of the outer clamp 3, the positions of the positioning block 12 and the positioning slot 13 must be aligned first.
[0056] Example 3
[0057] like Figures 8 to 10 As shown, based on Example 1, the difference from Example 1 is that: the upper and lower ends of the clamp 4 are provided with an annular conical structure resistance reduction component 14 extending along the axial direction and gradually approaching the central axis.
[0058] By providing the resistance reducing member 14, the resistance during the process of driving the precast pile into the foundation can be reduced.
[0059] Example 4
[0060] like Fig.11As shown, based on Example 2, the difference from Example 2 is that: the upper and lower ends of the clamp 4 are provided with an annular conical structure resistance reduction component 14 extending along the axial direction and gradually approaching the central axis.
[0061] By providing the resistance reducing member 14, the resistance during the process of driving the precast pile into the foundation can be reduced.
[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A mechanically connected prefabricated pile, characterized in that: include: A pile body, wherein a steel cage is buried inside the pile body; grooves along the circumferential direction are provided on the outer side walls at the upper and lower ends of the pile body; End plates, the upper and lower ends of the pile body are provided with the end plates; the outer edge of the end plate on the side facing the pile body is provided with a circle of embedded grooves; An outer sleeve, which is sleeved on the outer wall at the upper and lower ends of the pile body, and an annular protrusion embedded in the groove is provided on the inner wall of the outer sleeve; the end of the outer sleeve is inserted into the inner groove, and the end of the outer sleeve is a slot structure; The clamp has an annular clamping block at both the upper and lower ends of the inner side wall thereof, which can be inserted into the clamping groove structure at the end of the outer clamp. The clamp connects the end plates of the upper and lower sections of the precast pile into one piece by means of the annular clamping block; the clamp includes two semi-annular clamps butted together to form an annular shape.
2. The mechanically connected prefabricated pile according to claim 1, characterized in that: There are at least two grooves on the outer side wall at the end of the pile body, and the outer sleeve is provided with the same number of annular protrusions.
3. The mechanically connected prefabricated pile according to claim 1, characterized in that: The butt joint ends of the two semi-annular clamps are provided with butt joint plates which can be overlapped up and down, and the butt joint plates are provided with bolt holes, and the two semi-annular clamps are butt jointed and fixed by bolts.
4. The mechanically connected prefabricated pile according to claim 1, characterized in that: A positioning block is arranged on the outer ring side wall of the end plate; and a positioning notch corresponding to the positioning block and used for inserting the positioning block is arranged on the inner side wall of the clamp.
5. The mechanically connected prefabricated pile according to claim 1, characterized in that: It also includes an inner hoop; the inner side wall at the upper and lower ends of the pile body is also provided with a circumferential groove, the inner hoop is arranged on the inner side wall at the upper and lower ends of the pile body, and the outer side wall of the inner hoop is provided with an annular protrusion embedded in the groove.
6. The mechanically connected prefabricated pile according to claim 5, characterized in that: There are at least two grooves on the inner side wall at the end of the pile body, and the inner hoop is provided with the same number of annular protrusions.
7. The mechanically connected prefabricated pile according to any one of claims 1 to 6, characterized in that: The upper and lower ends of the clamp are provided with a resistance reducing member of an annular cone structure extending in the axial direction and gradually approaching the central axis.