CN209873785U - Tubular pile connector - Google Patents

Abstract

The utility model relates to a pipe pile connector, which is used for connecting two stacked concrete pipe piles. The ends of the concrete pipe piles are all provided with annular end plates, and the pipe pile connector includes A protruding portion protruding radially outward and a fixing portion protruding vertically near the protruding portion integrally formed on the peripheral edge of the end plate; and at least two hoop segments matched therewith. The pipe pile connector of the utility model has the characteristics of few parts, simple assembly and strong versatility, and is very suitable for outdoor operation of pipe piles in the railway field, for example.

Description

Pipe pile connector

technical field

The utility model relates to the technical field of concrete pipe pile construction, in particular to a pipe pile connector capable of quick installation.

Background technique

Concrete pipe piles are widely used in construction projects due to their high bearing capacity, strong adaptability to geological conditions, and fast construction speed. The functions of the pipe pile end plates at both ends of the concrete pipe pile mainly include: tensioning the steel skeleton when making the pipe pile to make it produce prestress; bearing the hammering of the pile driver during pile driving; and other important functions. In the existing construction technology, two concrete pipe piles are usually welded together by welding the end plates of the pipe piles. This method takes a long time to weld, and the welding quality mainly depends on the welding skills of the workers. When the joint enters the ground At this time, the quality of the joint cannot be guaranteed, the ability of the pipe pile to withstand the transverse shear stress is insufficient, and the joint is easily broken, and the upper and lower pipe piles are offset, which makes the pipe pile lose its function. The pipe pile connected by welding , the quality and service life of pipe piles cannot be guaranteed. In the prior art, there is also a construction technology that uses connectors to realize the connection of pipe piles, which can indeed increase the connection speed of pipe piles to a certain extent, but its connection strength cannot be guaranteed, especially the ability to resist transverse shear force. powerful.

Therefore, a pipe pile connection device with high connection strength, short connection period and low cost is required in the industry.

Utility model content

The utility model aims to provide a pipe pile connector which can at least partly solve the various deficiencies of the above-mentioned prior art.

According to one aspect of the present invention, a pipe pile connector is provided, which is used to connect two stacked concrete pipe piles, and the ends of the concrete pipe piles are all provided with annular end plates, wherein the pipe piles The connector includes: a protruding portion protruding radially outward integrally formed along the periphery of the annular end plate and a fixing portion protruding vertically near the protruding portion; at least two hoop sections, The hoop section is arranged on the outer side of the protrusion along the outer periphery of the annular end plate, wherein the hoop section includes: a groove arranged in the middle, wherein the cross-sectional shape of the groove is configured to overlap with the overlapping The cross-sectional shapes of the two protruding parts match; and a connecting part protruding from the middle part of the hoop segment vertically to both sides, wherein the connecting part substantially surrounds the fixing part to pass through the fastener Connect the two tightly.

The inventor of the utility model proposes the innovative pipe pile connector according to the utility model based on his perennial on-site construction experience. Compared with the existing methods such as welding, the pipe pile connector of the utility model has obvious advantages not only in the required operation period and operation cost, but also in the bending strength and pullout strength of the connected pipe pile. improve. Moreover, the pipe pile connector of the utility model has the characteristics of few parts, simple assembly, and strong versatility, which is very suitable for outdoor operation of pipe piles in the railway field, for example.

Preferably, wherein said at least two hoop sections have substantially the same size. This allows the hoop segments to be produced in batches and to be used in a versatile manner, which brings great convenience for outdoor work.

Preferably, the at least two hoop segments are three hoop segments, wherein each hoop segment forms a central angle of 120 degrees with respect to the outer circumference of the annular end plate. This is convenient for instructing workers to assemble the hoop segment in a prescribed manner, thereby reducing the possibility of worker's misoperation.

Preferably, the depth of the groove is equal to the protrusion of the protruding portion of the annular end plate. This is convenient to ensure sufficient wedging between the pipe piles to ensure the connection strength of the connector. This matching method is convenient for workers to confirm that the hoop section has been assembled in place, which is very suitable for outdoor working environments.

Preferably, the vertical extension height of the hoop segment is at least 3 times the thickness of the annular end plate. This helps to increase the contact surface between the hoop section and the pipe pile body to be connected, thereby further increasing the connection strength between the pipe piles, and can prevent undesired inclination or inclination between the stacked pipe piles.

Preferably, the concrete pipe pile further includes a pipe sleeve connected to the annular end plate, wherein a concrete pipe body is solidified in the space between the annular end plate and the pipe sleeve, and a steel bar is opened in the concrete pipe body. multiple passages through. This facilitates ensuring sufficient wedging between the pipe piles to ensure the connection strength of the connector.

Preferably, the outer diameter of the protrusion is larger than the outer diameter of the sleeve. This facilitates ensuring sufficient wedging between the pipe piles to ensure the connection strength of the connector, and prevents undesired inclination or inclination between stacked pipe piles.

Preferably, the plurality of passages are evenly spaced in the concrete pipe body along the circumferential direction. This facilitates ensuring sufficient wedging between the pipe piles to ensure the connection strength of the connector.

Part of the other features and advantages of the present utility model will be obvious to those skilled in the art after reading the application, and the other part will be described in the following detailed description with reference to the accompanying drawings.

Description of drawings

Below, describe embodiment of the present utility model in detail in conjunction with accompanying drawing, wherein:

Fig. 1 is a schematic cross-sectional view of a pipe pile connector according to the present invention.

Explanation of reference signs

11, 12 pipe piles; 11A, 12A annular end plates; 11B, 12B pipe sleeves; 11A1, 12A1 fixed parts; 11C, 12C protruding parts; 11D, 12D concrete pipe bodies; 11E, 12E channels; Groove; 2B connection.

Detailed ways

Referring now to FIG. 1 , the schematic scheme of the device and method disclosed in the present utility model will be described in detail. Although the drawings are provided to illustrate some embodiments of the invention, the drawings are not necessarily to scale of particular embodiments and certain features may be exaggerated, removed, or partially sectioned to better illustrate and explain the invention public content. Some components in the drawings can be adjusted according to actual needs without affecting the technical effect. Appearances of the phrase "in the drawings" or similar terms in the specification do not necessarily refer to all drawings or examples.

It should be noted that when a component is said to be "fixed" to another component, it can be directly on the other component or there can also be an intervening component. When a component is said to be "connected" to another component, it may be directly connected to the other component or there may be intervening components at the same time. When a component is said to be "set" on another component, it can be set directly on the other component or there may be an intervening component at the same time. Certain directional terms used hereinafter to describe the drawings, such as "inner," "outer," "above," "below" and other directional terms, are to be understood those directions involved in the drawing. Unless otherwise specified, the directional terms described in this specification basically follow the conventional directions understood by those skilled in the art.

The term "vertical" used in the present invention means that there is generally a vertical relationship in a three-dimensional space, and the above-mentioned vertical is not intended to be limited to a strict vertical, but a certain inclination is allowed. The terms "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance in the present invention, but are used to distinguish one component from other components .

Below in conjunction with accompanying drawing, the embodiment of the present utility model is described in detail.

As shown in FIG. 1 , a first pipe pile 11 and a second pipe pile 12 made of concrete are shown superimposed, wherein the second pipe pile 12 has, for example, been partially inserted into the ground. The first pipe pile 11 and the second pipe pile 12 are respectively provided at their ends with a first annular end plate 11A and a second annular end plate 12A, wherein the first annular end plate 11A and the second annular end plate 12A realize the second The abutment and preliminary alignment of the first pipe pile 11 and the second pipe pile 12 in the vertical direction. As shown in the figure, the first annular end plate 11A and the second annular end plate 12A are integrally formed with protruding portions 11C and 12C protruding outward along their peripheral edges, wherein these protruding portions 11C and 12C preferably have the same protruding length to It is ensured that when the first pipe pile 11 at the upper part is subjected to the downward hammering of the pile driver, the first pipe pile 11 will not fall over using the protrusion 12C as a supporting surface. Further, fixing portions 11A1 and 12A1 protruding vertically are formed in the vicinity of the protruding portions 11C and 12C.

Preferably, a first pipe sleeve 11B and a second pipe sleeve 12B extending vertically are respectively connected to the outer peripheries of the first annular end plate 11A and the second annular end plate 12A, wherein the first pipe sleeve 11B and the second pipe sleeve 11B The pipe sleeve 12B can be, for example, an iron sheet, wherein the first sleeve 11B and the second sleeve 12B can overlap with the above-mentioned fixing parts 11A1 and 12A1 respectively, so that the ring-shaped end plates 11A and 12A and the pipe sleeves 11B and 12B A space for injecting concrete slurry is formed in the space between them, and the first concrete pipe body 11D and the second concrete pipe body 12D are respectively formed after the slurry solidifies. As shown in the figure, the outer diameters of the sleeves 11B and 12B are preferably designed to be smaller than the outer diameters of the outwardly convex protrusions 11C and 12C. Optionally, in order to enhance the connection strength between the first pipe pile 11 and the second pipe pile 12, a plurality of holes through which steel bars can pass are formed on the first concrete pipe body 11D and the second concrete pipe body 12D respectively. Channels 11E and 12E, wherein these channels are preferably evenly spaced circumferentially in the concrete pipe body. Correspondingly, holes aligned with these passages are opened on the first annular end plate 11A and the second annular end plate 12A to allow steel bars to pass through.

Further, as shown in FIG. 1 , the two stacked concrete pipe piles 11 and 12 shown in the figure can be connected via the pipe pile connector according to the present invention. Wherein the pipe pile connector includes at least two hoop segments 2 , as a preferred embodiment, these hoop segments 2 have substantially the same size, thereby realizing standardized production of the hoop segments. These hoop sections can be made of cast iron, for example, and they include the outer circumference surrounding the entire annular end plates 11A and 12A. Of course, it is also conceivable to only surround most of the entire outer circumference, as long as a stable connection can be realized. Can. Feasibly, three hoop segments are provided, wherein each hoop segment forms a central angle of 120 degrees relative to the outer circumference of the annular end plate, so as to surround the entire outer circumference of the annular end plates 11A and 12A.

As shown in FIG. 1, these hoop sections 2 are arranged outside the protrusions 11C and 12C along the outer circumference of the annular end plates 11A and 12A, wherein these hoop sections 2 all include: a groove 21 arranged in the middle, as shown in FIG. 1, wherein the cross-sectional shape of the groove 21 is configured to match the cross-sectional shape of the two overlapping protrusions 11C and 12C so as to ensure a form fit between the two when pressed. The above-mentioned hoop section 2 also includes a connecting portion 2B protruding from the middle of the hoop section vertically to both sides, wherein as shown in FIG. Connect the two tightly. Specifically, a plurality of mounting holes for fasteners to pass through are provided at a certain height position of the fixing parts 11A1 and 12A1. Correspondingly, mounting holes are also provided at the same height position of the connecting part 2B. After the fastener passes through the installation hole and is tightened, the tight contact between the hoop section 2 and the annular end plate can be realized, thereby realizing a firm connection of stacked pipe piles. Here, preferably, the vertical extension height of the hoop section is at least 3 times the thickness of the annular end plate, which also helps to increase the contact surface between the hoop section 2 and the pipe pile body to be connected Therefore, the connection strength between pipe piles is further increased.

Specifically, as shown in FIG. 1, the stacked protrusions 11C and 12C are jointly formed into a substantially trapezoidal shape protruding outward, and correspondingly, the cross section of the groove 21 is formed into a complementary trapezoidal shape, so that the stacked The two protruding parts 11C and 12C placed together are clamped and kept in an overlapping state, so that even when the two annular end plates 11A and 12A are subjected to a shear force in a transverse direction or the like, there will be no obvious relative displacement or Misalignment, which ensures that the stacked pipe piles have sufficient connection strength.

At the same time, since the fastening connection between the hoop segment 2 and the annular end plate is realized through the fixing parts 11A1 and 12A1 and the connecting part 2B away from the protruding parts 11C and 12C, not all through the protruding parts 11C and 12C Realize, this firstly avoids opening on the protruding parts 11C and 12C the mounting holes that will destroy the mechanical strength of the protruding parts 11C and 12C, meanwhile, since the fasteners are respectively arranged on the fixing part 11A1 which is vertically above and below And 12A1, thus avoiding the lack of stress concentration caused by the fasteners, which allows workers to tighten the fasteners hard to ensure that the stacked pipe piles have sufficient connection strength.

Further preferably, as shown in FIG. 1, the outer diameter of the protruding portion 11C is larger than that of the pipe sleeve 11B. Such a design is beneficial for increasing the connection strength between pipe piles, and can prevent the existence of gaps between stacked pipe piles. Undesired slope or inclination. At the same time, preferably, the thickness of the hoop section 2 can be designed to be able to abut against the pipe sleeve 11B when being wedged tightly, which helps to increase the contact surface between the hoop section 2 and the pipe pile body to be connected so that The connection strength between pipe piles is further increased, and undesired inclination or inclination between stacked pipe piles can be prevented.

Next, describe the working mode of the pipe pile connector according to the utility model in a non-limiting manner:

When pile driving is required, the two pipe piles 11 and 12 to be connected are stacked on top of each other via two aligned ring-shaped end plates 11A and 12A. Next, a plurality of hoop segments 2 may be arranged from the annular end plates 11A and 12A to align the mutually superimposed protrusions 11C and 12C in the annular end plates 11A and 12A with the grooves 21 of the hoop segments 2 , and make the connecting portion of the hoop section 2 surround the fixing portion protruding vertically on the entire outer circumference of the pipe pile. Then, a worker inserts a fastener into the installation hole and tightens the fastener with a tool such as a wrench to complete the connection operation of the pipe pile connector. It is not difficult to see that the pipe pile connector of the present invention is very time-saving and labor-saving, which greatly saves the construction period and engineering cost of the operation. Further, through actual internal experiments, it was found that the bending strength and pullout strength of the pipe piles connected via the pipe pile connector of the utility model both meet the current national construction standards.

The above descriptions are only illustrative specific implementations of the present utility model, and are not intended to limit the scope of the present utility model. Any equivalent changes, modifications and combinations made by those skilled in the art without departing from the concept and principle of the present utility model shall fall within the scope of protection of the present utility model.

Claims (8)

1. The utility model provides a tubular pile connector, its two concrete pipe piles that are used for connecting the superpose, concrete pipe pile's tip all is provided with annular end plate, its characterized in that, tubular pile connector includes:

a radially outwardly projecting protrusion integrally formed along a peripheral edge of the ring-shaped end plate and a fixing portion projecting vertically in the vicinity of the protrusion;

at least two staple bolt sections, the staple bolt section is arranged along the periphery of ring end plate the outside of bulge, wherein the staple bolt section includes: a groove provided in the middle, the groove having a sectional shape configured to match a sectional shape of the two projections which are stacked; and the connecting parts extend from the middle part of the hoop section to two sides along the vertical direction, wherein the connecting parts approximately surround the fixing parts so as to fasten and connect the fixing parts and the fixing parts through fasteners.

2. The tube stake connector of claim 1, wherein said at least two anchor ear sections are of substantially the same size.

3. The tube pile connector of claim 2, wherein the at least two anchor ear sections are three anchor ear sections, wherein each anchor ear section is at a central angle of 120 degrees with respect to the outer circumference of the ring-shaped end plate.

4. The tube pile connector according to claim 1, wherein the depth of the groove is equal to the protruding length of the projection of the annular end plate.

5. The tube pile connector of claim 1, wherein the connecting portion and the fixing portion extend in a vertical direction by a height that is substantially the same and at least 3 times a thickness of the annular end plate.

6. The pipe pile connector of claim 1, wherein the concrete pipe pile further comprises a pipe sleeve connected to the ring-shaped end plate, wherein a concrete pipe body is cured in a space between the ring-shaped end plate and the pipe sleeve, and a plurality of channels for passing reinforcing steel bars are opened in the concrete pipe body.

7. The tube pile connector of claim 6, wherein the outer diameter of the projection is larger than the outer diameter of the tube sleeve.

8. The tube pile connector of claim 6, wherein the plurality of channels are evenly spaced circumferentially in the concrete tube body.