CN219060029U - A connection device for prestressed concrete pipe piles - Google Patents

Abstract

The utility model relates to a prestressed concrete pipe pile connecting device which comprises an upper end plate, a lower end plate, an upper annular steel plate, a lower annular steel plate, pins and an outer hoop. The lower end plate of the upper section pipe pile and the upper end plate of the lower section pipe pile are both fixed with an annular steel plate, and the diameters of the annular steel plates on the two end plates are one by one, so that the two annular steel plates can be just butted together; a plurality of holes are formed in the annular steel plate along the annular direction, and pins can be placed in the holes to connect the upper section of pipe pile with the lower section of pipe pile; the pin is in a truncated cone shape, the diameter of the pin is small from the inside to the outside, the average diameter of the pin is slightly smaller than the average diameter of the holes on the annular steel plate, and the length of the pin is slightly larger than the depth of the holes, so that errors caused by construction and manufacturing can be corrected, and the rear end of the pin is filled and leveled by a rubber gasket; the outer hoops are divided into two pieces, and are connected by bolts, and an annular steel plate is formed after the two outer hoops are aligned and used for preventing the pins from moving outwards; the stiffening rib is arranged in the middle of the outer hoop, and the positions of the stiffening rib and the holes are the same, so that the effect of reinforcing the outer hoop is achieved.

Description

A connection device for prestressed concrete pipe piles

technical field

The utility model relates to the technical field of prestressed concrete pipe piles, in particular to a connection device for prestressed concrete pipe piles.

Background technique

Prestressed concrete pipe piles are widely used in engineering. When the pile body is long, it is necessary to connect multiple sections of prestressed concrete pipe piles to form a whole. At present, the main connection methods are welding, bolt connection, outer hoop connection and so on. Welding is used to connect, and the welding connection has high technical requirements for construction personnel. There are many factors affecting the quality of on-site welding welds, and there is a disadvantage that the quality cannot be effectively controlled. Since the weld seam quality is difficult to be guaranteed, the prestressed concrete pipe piles have insufficient uplift resistance and are prone to fracture and disjoint when subjected to an upward force. Mechanical connections such as bolts have problems such as difficult alignment of the upper and lower wire holes, complex connection structure, and low reliability. The use of hoop connection increases the diameter of the pile body, which is unfavorable for the sinking of the pile body.

Utility model content

In order to solve the problems existing in the above concrete pipe pile connection process, the utility model provides a connection device for prestressed concrete pipe piles, which can quickly and firmly connect the upper and lower sections of concrete pipe piles.

For realizing above-mentioned technical purpose, the technical scheme that the utility model takes is:

A connection device for prestressed concrete pipe piles, comprising a first end plate, a second end plate, a first annular plate, a second annular plate, pins and an outer hoop, the upper end of the first end plate and the second end plate The lower ends can be connected with prestressed concrete pipe piles, the lower surface of the first end plate is fixed with the first annular plate, the first end plate and the first annular plate are coaxially arranged, and the upper surface of the second end plate is fixed with the second The annular plate, the second end plate and the second annular plate are coaxially arranged, and the outer diameter of the first annular plate is smaller than the inner diameter of the second annular plate or the inner diameter of the first annular plate is greater than the outer diameter of the second annular plate, so that the first The lower end of the annular plate can be inserted into the upper end of the second annular plate or the upper end of the second annular plate can be inserted into the lower end of the first annular plate. Both the first annular plate and the second annular plate are provided with a number of holes along the ring direction. When the lower end of the first annular plate can When the upper end of the second annular plate is inserted or the upper end of the second annular plate can be inserted into the lower end of the first annular plate, the holes on the first annular plate and the second annular plate are aligned one by one to form a pin hole, and the inner diameter of the pin hole is smaller than the outer diameter of the hole The diameter and the shape of the pin hole are suitable for the pin, the pin can be inserted into the pin hole, and the first annular plate and the second annular plate are locked and fixed, and the outer hoop can be hugged outside the first annular plate and the second annular plate, preventing The pin slides out of the hole.

In some of these embodiments, the central axis of the first annular plate and the second annular plate are perpendicular to the upper and lower surfaces of the first end plate and the second end plate, the height of the first annular plate and the second annular plate, Same thickness.

In some of the embodiments, the first end plate, the second end plate, the first annular plate and the second annular plate are all made of steel.

In some of the embodiments, the lower edge of the first annular plate and the upper edge of the second annular plate are rounded.

In some of these embodiments, the first annular plate and the second annular plate are uniformly provided with a plurality of holes in the circumferential direction, and the shape and size of the holes on the same annular steel plate are the same. Pointing to the central axis of the pile body, the diameter of the hole is larger on the outside and smaller on the inside along the radial direction of the pile body, and the maximum diameter of the hole on the inner annular plate after butt joint is equal to the minimum diameter of the hole on the inner annular plate.

In some of the embodiments, the pin is made of high-strength steel. The pin is in the shape of a truncated cone with a large diameter at one end and a small diameter at the other end. The maximum diameter of the pin is smaller than the maximum diameter of the pin hole, and the minimum diameter of the pin is larger than the minimum diameter of the pin hole.

In some of these embodiments, the length of the pin is slightly greater than the sum of the thicknesses of the first annular plate and the second annular plate. There is a gap between the first annular plate and the second annular plate, so the outer end of the pin has two possibilities of being located in the pin hole and protruding out of the pin hole. If the outer end of the pin is located in the pin hole, the rubber is fixed at the outer end of the pin. Gasket, and then grind the rubber gasket to be flush with the outer surface of the outer ring plate. If the outer end of the pin protrudes out of the pin hole, grind the outer end of the pin until it is flush with the outer surface of the outer ring plate.

In some of the embodiments, when the outer end of the pin needs to fix the rubber gasket, the rubber gasket is bonded to the outer end of the pin by glue.

In some of these embodiments, the outer hoop is divided into two semi-annular half hoops, bolt holes that can be aligned with each other are provided at both ends of the two half hoops, and the bolts pass through the bolt holes at the same time to hug and fix the two half hoops , used to prevent the pin from moving outward.

In some of the embodiments, a circle of horizontal stiffening ribs is arranged on the outer hoop, the horizontal stiffening ribs are at the same height as each pin hole, and a protective layer is arranged on the outer side of the outer hoop; a layer of anti-corrosion material is filled between the outer hoop and the protective layer.

Compared with the prior art, the utility model has the advantages:

1. Using this connection scheme, the connection speed is fast, and the technical requirements for the on-site construction personnel are low, and the construction of the pile foundation can be completed conveniently and quickly;

2. The lower edge of the first annular plate and the upper edge of the second annular plate are rounded, so that when the upper section pipe pile and the lower section pipe pile are aligned, the precision tolerance is large.

3. The holes of the two ring-shaped steel plates are aligned to form a truncated circular pin hole suitable for the pin, which makes the pin easy to insert and has a certain tolerance for the pin insertion accuracy.

4. The terminal plate connection of this scheme is mechanical connection, and the connection quality is guaranteed, especially when it is resistant to pulling out, the performance is better than that of the traditional welding scheme.

Description of drawings

Fig. 1 is the overall elevation view of the connected prestressed concrete pipe pile end plate and connection;

Figure 2 is a schematic diagram of the structure of the lower end plate;

Fig. 3 is a schematic diagram of the structure of the upper end plate;

Fig. 4 is an elevational view of the outer hoop structure.

The reference signs are: 1 is the first end plate, 11 is the first annular plate, 12 is the anchor hole, 2 is the second end plate, 21 is the second annular plate, 3 is the pin, 4 is the outer hoop , 41 is a stiffener, 42 is a bolt hole, 43 is a half hoop, and 44 is a bolt.

Detailed ways

Embodiments of the utility model are described in further detail below in conjunction with the accompanying drawings.

It should be noted that terms such as "upper", "lower", "left", "right", "front", and "rear" cited in the utility model are only for the convenience of description and are not used In order to limit the applicable scope of the present utility model, the change or adjustment of the relative relationship shall also be regarded as the applicable scope of the present utility model without substantive changes in the technical content.

Referring to Figures 1-4, a quick-connect prestressed concrete pipe pile connection device includes a first end plate 1, a second end plate 2, a first annular plate 11, a second annular plate 21, a pin 3, an outer hoop 4; in the construction process, the lower section pipe pile is first pressed into the soil, the second end plate 2 and the second annular plate 21 are on its upper part, after the upper section pipe pile is hoisted, the first end plate 1 and the second An annular plate 11 is in its lower part, insert the first annular plate 11 of the upper section pipe pile into the second annular plate 21 of the lower section pipe pile, and rotate the upper section pipe pile so that the wedge-shaped holes on the two annular steel plates are aligned one by one. After the wedge holes are aligned, insert the pin 3. After the pin is pushed into the hole, the recess at the rear end is filled with rubber gaskets and glued, and then the protruding part is processed to be smooth. Then use the outer hoop 4 to hoop the pin 3 for a week, so that the outward displacement of the pin 3 can be limited, and the two pipe piles can be connected as an effective whole. Note that pins should be avoided at the connection position of the outer hoop. Then put a layer of iron sheet on the outside of the hoop, and fill the middle of the iron sheet and the hoop with asphalt and other anti-corrosion materials.

The first annular plate 11 and the first end plate 1, the second annular plate 21 and the second end plate 2 are connected structurally, and are connected by welding, or integrally formed, and their materials are the same as those of ordinary end plates. The steel material is the same. The axes of the ring-shaped steel plates are respectively perpendicular to the surface of the end plate, and the centers of the end plate and the ring-shaped steel plate are on the central axis of the pile body. The height and thickness of the two ring-shaped steel plates are the same; the outer diameter of the first ring-shaped plate is slightly smaller than The inner diameter of the second annular plate, when the upper section pipe pile and the lower section pipe pile are connected, the first annular plate can be inserted into the second annular plate; the lower edge of the first annular plate and the upper edge of the second annular plate are rounded , to avoid misalignment of the upper and lower end plates due to manufacturing and construction errors. The height of the ring-shaped steel plate is 60mm, and the thickness of the ring-shaped steel plate is 25mm.

The two ring-shaped steel plates are evenly opened with 8 wedge-shaped holes along the circumferential direction, which are in the shape of a truncated cone. The central axis of the truncated circular plate points to the central axis of the pile body along the horizontal direction. The included angle of the axis is 1:10; the maximum diameter of the hole on the first annular plate is equal to the minimum diameter of the hole on the second annular plate, which is 25mm; the shape and size of the holes on the same annular steel plate are the same, and the rings on the two hole steel plates The interval arc is the same, and the holes of the inner and outer annular steel plates correspond to each other; pins can be inserted into the aligned holes to connect the upper and lower concrete pipe piles.

The pin 3 is made of high-strength steel and has a circular truncated shape. It is adapted to the shape of the hole after alignment on the two circular steel plates. The angle between its side and the central axis is 1:10, the length is 60mm, the maximum diameter is 29mm, and the minimum diameter is 18mm. . Considering that in actual engineering, the end plate will be slightly deformed during the process of processing or hammering the pile, the pin 3 is in the shape of a cone, so the pin 3 can be better inserted into the hole, and because the size is limited, it will not The whole enters into the second annular plate and fails. After the pin is pushed into the hole, the recess at the rear end is filled with glue and rubber gaskets, and then the protruding part is processed to be flat.

The installation method of the present utility model is as follows:

Step 1. The first annular plate 11 and the second annular plate 21 are connected to the first end plate 1 and the second end plate 2 respectively. When making pipe piles, the first end plate 1 and the second end plate 2 It has been fixedly installed at both ends of the pipe piles, and the fixing method is to anchor the corresponding pipe piles through the anchor holes 12 provided on the first end plate 1 and the second end plate 2 .

Step 2. At the construction site, when the lower pipe pile sinks to the connection position, lift the upper pipe pile with a crane, rotate the upper pipe pile, and insert the first annular plate 11 into the second annular plate 21; rotate the upper section Pipe piles, so that the holes on the two ring-shaped steel plates are aligned one by one.

Step 3: Insert the pin 3 into the hole.

Step 4: Fill the depression at the rear end of the pin 3 with glue and glue the rubber gasket, and then smooth the protruding part.

Step five, put the outer hoop 4 around the pin 3 and tighten the high-strength bolts.

Step 6, put a layer of protective layer on the outside of the outer hoop 4 again, and various anti-corrosion materials such as asphalt are arranged in the protective layer.

The above are only preferred implementations of the utility model, and the scope of protection of the utility model is not limited to the above-mentioned embodiments, and all technical solutions under the thinking of the utility model all belong to the scope of protection of the utility model. It should be pointed out that for those of ordinary skill in the art, some improvements and modifications without departing from the principle of the utility model should be regarded as the protection scope of the utility model.

Claims (10)

1. The connecting device of the prestressed concrete pipe pile is characterized by comprising a first end plate (1), a second end plate (2), a first annular plate (11), a second annular plate (21), a pin (3) and an outer hoop (4), wherein the upper end of the first end plate (1) and the lower end of the second end plate (2) can be connected with the prestressed concrete pipe pile, the first annular plate (11) is fixed on the lower surface of the first end plate (1), the first end plate (1) and the first annular plate (11) are coaxially arranged, the second annular plate (21) is fixed on the upper surface of the second end plate (2), the second annular plate (2) and the second annular plate (21) are coaxially arranged, the outer diameter of the first annular plate (11) is smaller than the inner diameter of the second annular plate (21) or the inner diameter of the first annular plate (11) is larger than the outer diameter of the second annular plate (21), so that the lower end of the first annular plate (11) can be inserted into the second annular plate (21) or the upper end of the second annular plate (21) or the second annular plate (21) can be inserted into the second annular plate (21) along the upper end of the second end plate (21), and the upper end of the second annular plate (11) can be inserted into the second annular plate (21) or the lower end of the second annular plate (11), the holes on the first annular plate (11) and the second annular plate (21) are aligned one by one to form a pin hole, the inner diameter of the hole of the pin hole is smaller than the outer diameter of the hole, the shape of the pin hole is matched with that of the pin (3), the pin (3) can be inserted into the pin hole, the first annular plate (11) and the second annular plate (21) are mutually clamped and fixed, the outer hoop (4) can be wrapped around the outer sides of the first annular plate (11) and the second annular plate (21), and the pin (3) is blocked from sliding out of the hole.

2. The connecting device of the prestressed concrete pipe pile according to claim 1, wherein the central axes of the first annular plate (11) and the second annular plate (21) are respectively perpendicular to the upper surface and the lower surface of the first end plate (1) and the second end plate (2), and the heights and the thicknesses of the first annular plate (11) and the second annular plate (21) are the same.

3. A connection device for prestressed concrete pipe piles according to claim 2, wherein the first end plate (1), the second end plate (2), the first annular plate (11) and the second annular plate (21) are all made of steel.

4. A connection device for prestressed concrete pipe piles according to claim 3, wherein the lower edges of the first annular plates (11) and the upper edges of the second annular plates (21) are rounded.

5. The connecting device of the prestressed concrete pipe pile according to claim 4, wherein a plurality of holes are uniformly formed in the first annular plate (11) and the second annular plate (21) along the circumferential direction, the holes on the same annular steel plate are in a round table shape in the same shape and size, the central axis of each hole points to the central axis of the pile body along the horizontal direction, the diameters of the holes are larger and smaller along the radial direction of the pile body, and the maximum diameter of the holes on the annular plates positioned on the inner side after being butted is equal to the minimum diameter of the holes on the annular plates positioned on the inner side.

6. The connecting device for the prestressed concrete pipe piles according to claim 5, wherein the pin (3) is made of high-strength steel, the pin (3) is in a truncated cone shape with one end having a large diameter and the other end having a small diameter, the maximum diameter of the pin (3) is smaller than the maximum diameter of the pin hole, and the minimum diameter of the pin (3) is larger than the minimum diameter of the pin hole.

7. The connection device for prestressed concrete pipe piles according to claim 6, wherein the length of the pin (3) is slightly greater than the sum of the thicknesses of the first annular plate (11) and the second annular plate (21), and after the pin (3) is inserted into the pin hole, since the first annular plate (11) and the second annular plate (21) are not necessarily completely attached, a gap is formed between the first annular plate (11) and the second annular plate (21), the outer end of the pin (3) has two possibilities of being positioned in the pin hole and protruding out of the pin hole, such as the outer end of the pin (3) is positioned in the pin hole, a rubber gasket is fixed at the outer end of the pin (3), and then the rubber gasket is ground to be flush with the outer surface of the outer annular plate, such as the outer end of the pin (3) protrudes out of the pin hole, and the outer end of the pin (3) is ground to be flush with the outer surface of the outer annular plate.

8. The connecting device of the prestressed concrete pipe pile according to claim 7, wherein when the outer end of the pin (3) is required to be fixed with a rubber gasket, the rubber gasket is adhered to the outer end of the pin (3) through glue.

9. A device for connecting a prestressed concrete pipe pile according to claim 8, characterized in that said outer collar (4) is divided into two half collars (43) of semi-annular shape, which are provided with bolt holes (42) at both ends thereof, which can be aligned with each other, and bolts (44) passing through the bolt holes (42) simultaneously fasten the two half collars (43) in a surrounding manner for preventing the outward movement of the pins (3).

10. A connection device for prestressed concrete pipe piles according to claim 9, wherein: a circle of horizontal stiffening ribs (41) are arranged on the outer hoop (4), the horizontal stiffening ribs are flush with the height of each pin hole, and a protective layer is arranged on the outer side of the outer hoop (4); an anti-corrosion material layer is filled between the outer hoop (4) and the protective layer.

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