Pre-tensioning method prestressed concrete pipe pile
By setting ring grooves and guide bumps on the connecting plate of concrete pipe piles, automatic alignment between the insertion rod and the socket is achieved, solving the problem of manual alignment difficulties in the prior art, and improving the efficiency of pipe pile connection.
Patent Information
- Application Number
- CN202420603614.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-26
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-03-26
AI Technical Summary
In deep pile foundation buildings, single pipe piles cannot meet the connection needs. The existing connection methods require manual alignment of the insertion rods and sockets, resulting in inefficient connection efficiency.
A prestressed concrete pipe pile is designed with a pre-tension method, and the ring groove and guide bump are arranged on the second connecting plate. The insertion rod and the socket are automatically aligned, and the insertion rod is made by contacting the side of the guide bump. During the descent process, it corresponds to the socket on the bottom surface of the ring groove to improve alignment efficiency.
Automatic alignment of front and rear pipe piles during pile connection is realized, connecting efficiency is improved, and the time and energy of manual operation is reduced.
Smart Images
Figure CN222275454U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of concrete pipe piles, and more specifically relates to a prestressed concrete pipe pile using a pre-tensioning method. Background Art
[0002] Pre-tensioning prestressed concrete pipe piles is a method in which the prestressed steel bars embedded in the pipe are tensioned before pouring concrete to produce shrinkage stress. The concrete is then poured. After the concrete reaches a certain strength, the steel bars are loosened to allow them to elastically shrink. With the help of the bond between the concrete and the prestressed steel bars, pre-compression stress is produced on the entire pipe pile, thereby improving the overall strength of the concrete pipe pile. It has been widely used.
[0003] Since the pile foundations of some buildings are deep and a single pipe pile cannot meet the requirement, pile connection is required, that is, connecting the top of the previous pipe pile with the lower end of the next pipe pile. The current connection method is to set steel plates at both ends of the pipe piles, and perform pile connection by welding the steel plates on the front and rear pipe piles. There is also a method of setting a rod or a socket on the steel plate of the previous pipe pile, and setting a socket or a rod on the steel plate of the next pipe pile. When connecting, the rod is inserted into the socket, and then the two steel plates are welded to improve the connection effect between the pipe piles.
[0004] When the pipe piles are connected, the last pipe pile needs to be lifted vertically by a crane, which makes the lower end of the pipe pile easy to shake, making it difficult to align the plug rod and the plug hole. Manual alignment is required, which is time-consuming and labor-intensive. Utility Model Content
[0005] In view of the deficiencies in the prior art, the utility model provides a pre-tensioned prestressed concrete pipe pile which can improve the alignment efficiency between the front and rear pipe piles.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a prestressed concrete pipe pile by pretensioning method, comprising a pipe pile body and a first connecting plate and a second connecting plate located at both ends of the pipe pile body, the first connecting plate being provided with a plurality of plug rods, the second connecting plate being provided with plug holes corresponding to the plug rods, the second connecting plate being provided with an annular groove, the plug holes being opened on the bottom surface of the annular groove, a guide protrusion being provided between two adjacent plug holes in the annular groove, and the two side surfaces of the guide protrusion being respectively extended obliquely to the orifices of the two adjacent plug holes.
[0007] Furthermore, the top of the guide protrusion is lower than the surface of the second connecting plate.
[0008] Furthermore, the top of the guide protrusion is arc-shaped, and the end of the insertion rod is arc-shaped.
[0009] Furthermore, the annular groove expands from the inside to the outside, and the width of the annular groove is greater than the diameter of the insertion rod.
[0010] Furthermore, the thickness of the second connecting plate is greater than that of the first connecting plate, and the total depth of the insertion hole and the annular groove is equal to or greater than the length of the insertion rod.
[0011] Furthermore, the connection between the insertion hole and the guide protrusion is rounded.
[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: when the piles are connected, the second connecting plate of the preceding pipe pile faces upward, the succeeding pipe pile is located above the preceding pipe pile and the first connecting plate faces downward, the succeeding pipe pile is lowered so that its insertion rod first extends into the annular groove, at which time the annular groove can be used to prevent the succeeding pipe pile from continuing to shake, and the succeeding pipe pile is continued to be lowered. After the insertion rod contacts the side surface of the guide protrusion, the guiding effect of the guide protrusion can make the insertion rod gradually correspond to the insertion hole on the bottom surface of the annular groove during the descending process, thereby realizing automatic alignment of the insertion rod and the insertion hole, thereby improving the alignment efficiency between the front and rear pipe piles. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural schematic diagram of the prestressed concrete pipe pile of the utility model with the second connecting plate as the front side;
[0014] Figure 2 for Figure 1 Schematic diagram of the cross section along the AA direction;
[0015] Figure 3 for Figure 1 Schematic diagram of the cross section along the BB direction;
[0016] Figure 4 It is a schematic structural diagram of the front and rear pipe piles in the utility model when they are aligned.
[0017] Reference numerals: pipe pile body 1; first connecting plate 2; second connecting plate 3; insertion rod 4; insertion hole 5; annular groove 6; guide protrusion 7. DETAILED DESCRIPTION
[0018] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the present invention.
[0019] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" and "a number" is two or more, unless otherwise clearly and specifically defined.
[0020] Reference Figures 1 to 3 The utility model is further described.
[0021] A prestressed concrete pipe pile by pretensioning method comprises a pipe pile body 1 and a first connecting plate 2 and a second connecting plate 3 located at both ends of the pipe pile body 1, wherein the first connecting plate 2 is provided with a plurality of plug rods 4, the second connecting plate 3 is provided with plug holes 5 corresponding to the plug rods 4, the second connecting plate 3 is provided with an annular groove 6, the plug holes 5 are opened on the bottom surface of the annular groove 6, a guide protrusion 7 is provided between two adjacent plug holes 5 in the annular groove 6, and the two side surfaces of the guide protrusion 7 are respectively extended obliquely to the openings of the two adjacent plug holes 5.
[0022] like Figure 2 As shown, in this embodiment, preferably, the top of the guide protrusion 7 is lower than the surface of the second connecting plate 3.
[0023] like Figure 2 and Figure 3 As shown, in this embodiment, preferably, the top of the guide protrusion 7 is arc-shaped, and the end of the insertion rod 4 is arc-shaped. When the end of the insertion rod 4 contacts the top of the guide protrusion 7, the insertion rod 4 can automatically slide in a biased manner to avoid the insertion rod 4 being fixed.
[0024] like Figure 3 As shown, in this embodiment, preferably, the annular groove 6 expands from the inside to the outside, and the notch width of the annular groove 6 is greater than the diameter of the insertion rod 4.
[0025] Preferably, in this embodiment, the thickness of the second connecting plate 3 is greater than that of the first connecting plate 2 , and the total depth of the insertion hole 5 and the annular groove 6 is equal to or slightly greater than the length of the insertion rod 4 .
[0026] Preferably, in this embodiment, the connection between the insertion hole 5 and the guide protrusion 7 is chamfered to facilitate the insertion of the insertion rod 4 into the insertion hole 5 .
[0027] like Figures 1 to 4After the first connecting plate 2 of the rear pipe pile is inserted into the annular groove 6, the annular groove 6 can be used to prevent the rear pipe pile from continuing to shake, and the rear pipe pile can be further lowered. The connecting plate 2 of the rear pipe pile is downwardly moved and the second connecting plate 3 is upwardly moved. Then, the first connecting plate 2 of the rear pipe pile is downwardly moved and the second connecting plate 3 is upwardly moved. When the plug rod 4 on the rear pipe pile is inserted into the annular groove 6, the annular groove 6 can be used to prevent the rear pipe pile from continuing to shake, and the rear pipe pile can be further lowered. The plug rod 4 first contacts the side surface of the guide protrusion 7 in the annular groove 6. After contacting the side surface of the guide protrusion 7, the guiding effect of the guide protrusion 7 can be used to make the plug rod 4 gradually correspond to the insertion hole 5 on the bottom surface of the annular groove 6 during the descending process, so as to realize automatic alignment of the plug rod 4 and the insertion hole 5, until the plug rod 4 is inserted into the plug rod 4, the first connecting plate 2 of the rear pipe pile contacts the second connecting plate 3 of the front pipe pile, and then the first connecting plate 2 and the second connecting plate 3 are welded to complete the pile connection. The alignment process of the front and rear pipe piles is more convenient and quick. When the plug rod 4 is inserted into the annular groove 6, the plug rod 4 and the insertion hole 5 can be automatically aligned, thereby improving the alignment efficiency.
[0028] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.
Claims
1. A prestressed concrete pipe pile, comprising a pipe pile body and a first connecting plate and a second connecting plate located at both ends of the pipe pile body, characterized in that: A plurality of plug rods are arranged on the first connecting plate, and plug holes corresponding to the plug rods are arranged on the second connecting plate. An annular groove is arranged on the second connecting plate, and the plug holes are opened on the bottom surface of the annular groove. A guide protrusion is arranged between two adjacent plug holes in the annular groove, and two side surfaces of the guide protrusion extend obliquely to the openings of the two adjacent plug holes respectively.
2. The prestressed concrete pipe pile according to claim 1, characterized in that: The top of the guide protrusion is lower than the surface of the second connecting plate.
3. The prestressed concrete pipe pile according to claim 1, characterized in that: The top of the guide protrusion is in an arc shape, and the end of the insertion rod is in an arc shape.
4. The prestressed concrete pipe pile according to claim 1, characterized in that: The annular groove expands from the inside to the outside, and the width of the notch of the annular groove is greater than the diameter of the insertion rod.
5. The prestressed concrete pipe pile according to claim 1, characterized in that: The thickness of the second connecting plate is greater than that of the first connecting plate, and the total depth of the insertion hole and the annular groove is equal to or greater than the length of the insertion rod.
6. The prestressed concrete pipe pile according to claim 1, characterized in that: The connection between the insertion hole and the guide protrusion is rounded.