CN207193967U - A kind of prestressed concrete pipe pile end plate - Google Patents

Abstract

The utility model discloses a prestressed concrete pipe pile end plate, which comprises a first end plate, a second end plate, and a connecting pipe connected between the first end plate and the second end plate, the first end plate and the second end plate The two end panels are provided with through holes suitable for the inner hole of the prestressed concrete pipe pile; the first end panel is provided with a plurality of main reinforcement anchor holes along the circumference for inserting the anchor reinforcement, and the multiple main reinforcement anchor holes are evenly distributed. Distributed on the first distribution circle, a plurality of threaded holes for fastening connections are provided on the second end panel along the circumference, and the plurality of threaded holes are evenly distributed on the second distribution circle, and the radius of the second distribution circle is larger than that of the first distribution circle. The radius of a distribution circle. The utility model does not need on-site welding, and the on-site fastening operation can be carried out by using fasteners, which greatly improves the work efficiency and connection reliability, and is helpful for reducing project investment, shortening the construction period, improving the level of mechanized construction and ensuring the safety of the power grid. Safe operation and other aspects have strong practical significance.

Description

A prestressed concrete pipe pile end plate

technical field

The utility model relates to the technical field of pipe piles used for transmission line tower foundations, in particular to a prestressed concrete pipe pile end plate.

Background technique

With the rapid development of my country's electric power industry, there are more and more applications of prestressed pipe piles for transmission lines. Concrete prestressed pipe piles for transmission lines have the advantages of high strength, good pressure resistance, convenient construction, small footprint, small foundation excavation, corrosion resistance, and low environmental impact. And it is widely used in areas with poor geological conditions (such as muddy soft soil foundation). At present, most of the joints between prestressed concrete pipe pile sections of transmission lines are welded on site, which is troublesome to operate, low in efficiency, and difficult to guarantee the quality of butt joints, leaving many hidden dangers to the project.

Therefore, it is necessary to develop a new connecting end plate for transmission line tower foundation pipe piles, which solves the cumbersome operation, low work efficiency and difficult Ensuring the quality of docking has left many hidden problems for the project.

The invention patent with authorized notification number CN 102139516 B discloses a prestressed concrete pipe pile end plate. The specific scheme is: a circular steel plate (1) is provided, and several tension steel rod positioning holes are opened in the middle (3) and the associated tension steel rod perforation (5), the same number of tension bolt fixing anchor holes (4) as the tension steel rod positioning holes, the inner side of the hole is provided with an annular groove (2), and the outer side of the hole is There is a semi-U-shaped groove (6) for pile welding on the right side, and a pile hoop assembly step (7) on the left side. The tension bolt fixing anchor hole is set separately to increase the contact area between the tension bolt and the tension plate fixing anchor hole. , which effectively reduces the stress concentration of the tension bolts and prevents the tension bolts from being pulled off. When the bearing capacity is the same, the thickness of the end plate can be reduced; the setting of the welding groove and assembly steps on the outside of the hole is not only beneficial to ensure the welding quality, Improve assembly efficiency while reducing steel consumption for end plates. However, this invention still adopts the form of welding to realize the pile connection between the sections of prestressed concrete pipe piles, which cannot solve the cumbersome operation, low operation efficiency and difficulty in ensuring the quality of the butt joint caused by the on-site welding method. many hidden dangers.

Utility model content

In view of this, the purpose of this utility model is to provide a prestressed concrete pipe pile end plate for the deficiencies of the prior art, which does not need to be welded on site, and can be fastened on site by using fasteners, which greatly improves the Work efficiency and connection reliability have strong practical significance for reducing project investment, shortening construction period, improving mechanized construction level and ensuring safe operation of power grid.

In order to achieve the above object, the utility model adopts the following technical solutions:

A prestressed concrete pipe pile end plate, comprising a first end plate, a second end plate, and a connecting pipe connected between the first end plate and the second end plate, the first end plate and the second end plate The end panels are all provided with through holes adapted to the inner holes of the prestressed concrete pipe piles; the first end panel is provided with a plurality of main reinforcement anchor holes for inserting anchor reinforcement along the circumferential direction, and a plurality of the main reinforcement The anchor holes are evenly distributed on the first distribution circle, and a plurality of threaded holes for fastening connections are provided on the second end panel along the circumference, and the plurality of threaded holes are evenly distributed on the second distribution circle, so The radius of the second distribution circle is larger than the radius of the first distribution circle.

Further, the difference between the radius of the second distribution circle and the radius of the first distribution circle is 0.2-0.3 mm.

Further, between the first end panel and the second end panel and on the outside of the through hole, a plurality of stiffener plates for increasing structural strength are evenly arranged.

Further, lightening holes are provided on the stiffener plate.

Further, the prestressed concrete pipe pile end plate is arranged at the lower end of the prestressed concrete pipe pile, and the upper end of the prestressed concrete pipe pile is provided with an upper end plate having the same structure as the first end plate.

The beneficial effects of the utility model are:

The utility model adopts on-site welding method for the connection and fixation between the sections of the pipe piles used for the traditional transmission line tower foundation, which has cumbersome operation, low operation efficiency and difficulty in ensuring the quality of the butt joint, leaving many hidden dangers for the project. , providing a prestressed concrete pipe pile end plate, including a first end plate, a second end plate, and a connecting pipe connected between the first end plate and the second end plate, and at the same time between the first end plate and the second end plate The end panels are provided with through holes adapted to the inner holes of the prestressed concrete pipe piles, and a plurality of main reinforcement anchor holes for inserting anchor reinforcements are opened on the first end panel along the circumference, and the multiple main reinforcement anchor holes are evenly distributed. Distributed on the first distribution circle, a plurality of threaded holes for fastening connections are opened on the second end panel along the circumference, and the plurality of threaded holes are evenly distributed on the second distribution circle, and the radius of the second distribution circle is greater than The radius of the first distribution circle, the end plate of the prestressed concrete pipe pile adopts the double-layer structure of the first end plate and the second end plate, so that on the one hand, the anchor hole of the main reinforcement on the first end plate can be used to realize the prestressed concrete pipe pile On the other hand, the second end plate can be combined with the upper end plate of another prestressed concrete pipe pile to be connected to realize the connection between the sections of the prestressed concrete pipe pile, and only need to use the screw connection in the The fasteners in the threaded holes can quickly realize the on-site pile connection operation. At the same time, because the radius of the second distribution circle is greater than the radius of the first distribution circle, and the structure of the upper end plate is exactly the same as that of the first end plate, the fasteners When connecting the second end panel with the upper end panel of another prestressed concrete pipe pile to be connected, due to the center position deviation between the anchor hole of the main reinforcement and the threaded hole, when using fasteners (such as screws or lag screws) Self-locking is formed, thereby preventing loosening at the joints of two adjacent prestressed concrete pipe piles.

The utility model does not require on-site welding, and the on-site fastening operation can be carried out by using fasteners, which greatly improves the work efficiency and the reliability of the connection, and is helpful for reducing project investment, shortening the construction period, improving the level of mechanized construction and ensuring the safety of the power grid. Safe operation and other aspects have strong practical significance.

Description of drawings

Fig. 1 is a schematic front view of the structure of the first embodiment of the utility model;

Fig. 2 is a schematic top view of the structure of the first embodiment of the utility model;

Fig. 3 is a schematic front view of the structure of the second embodiment of the utility model;

Fig. 4 is a schematic diagram of the use state of the utility model;

Fig. 5 is a schematic diagram of pile connection of prestressed concrete pipe piles in the utility model.

Detailed ways

In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the utility model. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the described embodiments of the present invention belong to the protection scope of the present invention.

Example 1

As shown in Figures 1 and 2, a prestressed concrete pipe pile end plate includes a first end panel 1, a second end panel 2, and a connection between the first end panel 1 and the second end panel 2 The connecting pipe 3, the first end panel 1 and the second end panel 2 are provided with a through hole 4 adapted to the inner hole of the prestressed concrete pipe pile; the first end panel 1 is provided along the circumference A plurality of main reinforcement anchor holes 5 for inserting anchor reinforcement, and a plurality of said main reinforcement anchor holes 5 are evenly distributed on the first distribution circle 6, and a plurality of anchor holes 5 for fastening are provided on the second end panel 2 along the circumference. The threaded holes 7 are connected, and a plurality of the threaded holes 7 are evenly distributed on the second distribution circle 8 , and the radius of the second distribution circle 8 is larger than the radius of the first distribution circle 6 .

The difference between the radius of the second distribution circle 8 and the radius of the first distribution circle 6 is 0.25 mm.

In this embodiment, a prestressed concrete pipe pile end plate is provided, including a first end plate, a second end plate, and a connecting pipe connected between the first end plate and the second end plate, and at the first end Both the panel and the second end panel are provided with through holes suitable for the inner hole of the prestressed concrete pipe pile, and a plurality of main reinforcement anchor holes for inserting the anchor reinforcement are provided on the first end panel along the circumference, and a plurality of The anchor holes of the main reinforcement are evenly distributed on the first distribution circle, and a plurality of threaded holes for fastening connection are opened on the second end panel along the circumference, and the plurality of threaded holes are evenly distributed on the second distribution circle, and the second distribution The radius of the circle is greater than the radius of the first distribution circle. The end plate of the prestressed concrete pipe pile adopts a double-layer structure of the first end plate and the second end plate, so that on the one hand, the anchor hole of the main reinforcement on the first end plate can be used to realize the prestressed concrete pipe pile. The prestressed loading of the stressed concrete pipe pile, on the other hand, can use the second end panel combined with the upper end plate of another prestressed concrete pipe pile to be connected to realize the connection between the sections of the prestressed concrete pipe pile, and only need The on-site pile connection operation can be quickly realized by using the fasteners threaded in the threaded holes. At the same time, because the radius of the second distribution circle is greater than the radius of the first distribution circle, and the structure of the upper end plate is exactly the same as that of the first end plate, In this way, when the fasteners connect the second end panel with the upper end plate of another prestressed concrete pipe pile to be connected, since there is a center position deviation between the anchor hole of the main reinforcement and the threaded hole, then when using fasteners (such as screw rods or square heads) screw) to form self-locking, which can prevent the loosening of two adjacent prestressed concrete pipe piles.

In addition, according to the inventor's many years of work practice and knowledge accumulation, the difference between the radius of the second distribution circle and the radius of the first distribution circle is selected between 0.2 and 0.3 mm, which can play a role in the use of fasteners (such as screws) or square head screw) to form self-locking, and it will not cause the fastener to be difficult to insert, and when the difference between the radius of the second distribution circle and the radius of the first distribution circle is selected as 0.25mm, the effect is the best. This implementation In the example, the difference between the radius of the second distribution circle and the radius of the first distribution circle is selected as the optimal value of 0.25mm. Obviously, other values between 0.2 and 0.3mm can be selected, such as 0.2mm, 0.21mm, 0.22 mm, 0.23mm, 0.24mm, 0.26mm, 0.27mm, 0.28mm, 0.29mm or 0.23mm can also play the same role.

The utility model does not require on-site welding, and the on-site fastening operation can be carried out by using fasteners, which greatly improves the work efficiency and the reliability of the connection, and is helpful for reducing project investment, shortening the construction period, improving the level of mechanized construction and ensuring the safety of the power grid. Safe operation and other aspects have strong practical significance.

Example 2

As shown in Figure 3, the difference between it and Embodiment 1 is that a plurality of reinforcing ribs for increasing structural strength are evenly arranged between the first end panel 1 and the second end panel 2 and outside the through hole 4 plate 9.

Lightening holes 10 are provided on the rib plate 9 .

In this embodiment, in order to enhance the overall strength of the structure, a plurality of stiffener plates are uniformly arranged between the first end panel and the second end panel and outside the through hole. In addition, in order to reduce the influence of the overall weight increase caused by the rib plate and not to weaken the strength of the rib plate, weight-reducing holes are provided on the rib plate.

As shown in Figure 4, it is a schematic diagram of the use state of the utility model, the end plate of the prestressed concrete pipe pile is arranged on the lower end of the prestressed concrete pipe pile 11, and the upper end of the prestressed concrete pipe pile 11 is arranged on the same side as the described prestressed concrete pipe pile 11. The upper end plate 12 with the same structure as the first end plate 1, since the radius of the second distribution circle is greater than the radius of the first distribution circle, and the structure of the upper end plate is exactly the same as that of the first end plate, the fasteners are connected to the second end plate With the upper end plate of another prestressed concrete pipe pile to be connected, due to the center position deviation between the anchor hole of the main reinforcement and the threaded hole, self-locking is formed when using a fastener (such as a screw or square head screw), so that it can It can prevent the phenomenon of loosening at the connecting piles of two adjacent prestressed concrete pipe piles.

As shown in Figure 5, it is the schematic diagram of the pile connection of the prestressed concrete pipe pile in the utility model, the top is the first prestressed concrete pipe pile 13, and the bottom is the second prestressed concrete pipe pile 14, first the first The threaded hole on the second end panel at the lower end of the prestressed concrete pipe pile 13 is aligned with the main reinforcement anchor hole on the upper end plate at the upper end of the second prestressed concrete pipe pile 14, and then the first prestressed concrete pipe is secured by fasteners 15. The pile 13 and the second prestressed concrete pipe pile 14 are connected and fixed together, and the fastener 15 can be a screw rod or a lag screw.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model without limitation, other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the utility model, as long as they do not depart from the technical solution of the utility model The spirit and scope should be included in the claims of the present utility model.

Claims (5)

1. A prestressed concrete pipe pile end plate, characterized in that: comprise a first end plate, a second end plate, and a connecting pipe connected between the first end plate and the second end plate, the first end plate Both the first end panel and the second end panel are provided with through holes adapted to the inner hole of the prestressed concrete pipe pile; the first end panel is provided with a plurality of main reinforcement anchor holes for inserting anchor reinforcement along the circumference, And a plurality of anchor holes of the main reinforcement are evenly distributed on the first distribution circle, and a plurality of threaded holes for fastening connection are provided on the second end panel along the circumference, and a plurality of the threaded holes are evenly distributed in the first distribution circle. On the second distribution circle, the radius of the second distribution circle is greater than the radius of the first distribution circle. 2 . The prestressed concrete pipe pile end plate according to claim 1 , wherein the difference between the radius of the second distribution circle and the radius of the first distribution circle is 0.2-0.3 mm. 3. The prestressed concrete pipe pile end plate according to claim 1, characterized in that: between the first end plate and the second end plate and outside the through hole, a plurality of pipe piles are evenly arranged to increase the structural strength. reinforcement panels. 4. The prestressed concrete pipe pile end plate according to claim 3, characterized in that: the reinforcement plate is provided with lightening holes. 5. The prestressed concrete pipe pile end plate according to any one of claims 1 to 4, characterized in that: the prestressed concrete pipe pile end plate is arranged at the lower end of the prestressed concrete pipe pile, and the prestressed concrete pipe pile The upper end of the pipe pile is provided with an upper end plate having the same structure as the first end plate.