CN-224227770-U - End plate and precast pile

Abstract

The utility model relates to the technical field of precast piles and particularly discloses an end plate and a precast pile, wherein the end plate comprises an end plate main body, a plurality of anchors Zhang Kong are arranged on the end plate main body, a plurality of anchor tensioning holes are arranged on the end plate main body at intervals, each anchor tensioning hole comprises a bolt hole, a sliding rib groove and two upsetting anchor holes, each upsetting anchor hole is used for installing upsetting heads of steel bars, and as each anchor Zhang Kongna is provided with two upsetting anchor holes, the upsetting heads of two steel bars can be installed, under the condition that the number of the steel bars is unchanged, the number of half anchors Zhang Kong can be reduced, the strength of the end plate main body is further improved, and the service life of the precast pile is prolonged.

Inventors

• ZHANG FANGFANG
• YAN TIANLONG

Assignees

• 宁波中淳高科股份有限公司

Dates

Publication Date

20260512

Application Date

20250528

Claims (10)

1. 1. An end plate, comprising: An end plate body having a plurality of anchors Zhang Kong thereon, a plurality of the anchors Zhang Kong being spaced apart on the end plate body; Each anchor hole comprises a bolt hole, two rib sliding grooves and two upsetting anchor holes, wherein the two upsetting anchor holes are arranged on two symmetrical sides of the bolt hole, and each upsetting anchor hole is respectively communicated with the bolt hole through one rib sliding groove.
2. 2. An end plate according to claim 1, wherein said end plate body is circular in shape as a whole, a plurality of said anchors Zhang Kong are arranged in an annular arrangement as a whole on said end plate body, and the centers of a plurality of said bolt holes are all located on the same circumference.
3. 3. An end plate according to claim 2, wherein a first straight line is provided between the central axis of the end plate body and the central axis of the bolt hole, and a second straight line is provided between the central axes of the two heading anchor holes of the same anchor Zhang Kongna, said second straight line coinciding with said first straight line.
4. 4. An end plate according to claim 2, wherein a first straight line is provided between the center of the end plate body and the center of the bolt hole, a second straight line is provided between the centers of the two heading anchor holes of the same anchor Zhang Kongna, a first included angle is provided between the second straight line and the first straight line, and the first included angle is greater than 0 ° and less than 90 °.
5. 5. An end plate according to claim 4, wherein said first included angle is set at 45 °.
6. 6. An end plate according to claim 1, wherein the end plate body is formed as a square, the plurality of anchors Zhang Kong are arranged on the end plate body as a square, the centers of the plurality of bolt holes are all located on the same square, a second straight line is arranged between the centers of the two heading anchor holes of the same anchor Zhang Kongna, and the plurality of second straight lines are all oriented to the center of the end plate body.
7. 7. An end plate according to claim 1, wherein said end plate body is formed in a square shape as a whole, a plurality of said anchors Zhang Kong are arranged in a ring shape as a whole on said end plate body, and central axes of a plurality of said bolt holes are all located on the same circumference; a first straight line is arranged between the central axis of the end plate main body and the central axis of the bolt hole, a second straight line is arranged between the central axes of the two upsetting anchor holes of the same anchor Zhang Kongna, and the second straight line coincides with the first straight line.
8. 8. An end plate according to claim 6 or 7, wherein the central part of the end plate body is provided with a through hole, the centre of which coincides with the centre of the end plate body.
9. 9. A precast pile, characterized by comprising: The pile body is internally provided with steel bars; An end plate according to any one of claims 1 to 8, said end plate being provided at both ends of said pile body, said upset of said steel bars being connectable into said upset anchor eye.
10. 10. A precast pile as defined in claim 9, wherein a plurality of said heading anchor holes are surrounded to form a first anchor eye group and a second anchor eye group, a plurality of said bars form a first bar cage and a second bar cage, said first bar cage and said second bar cage are distributed in said pile body along the radial direction of said pile body, a plurality of heading in said first bar cage are respectively insertable into a plurality of said heading anchor holes of said first anchor eye group, and a plurality of heading in said second bar cage are respectively insertable into a plurality of said heading anchor holes of said second anchor eye group.

Description

End plate and precast pile Technical Field The utility model relates to the technical field of precast piles, in particular to an end plate and a precast pile. Background Along with the rapid development of super high-rise buildings and large-span structures, modern engineering has double requirements on foundation bearing systems, namely, the foundation bearing systems are required to have high-efficiency vertical load transmission capacity and also are required to meet the horizontal resistance requirements under complex working conditions. The traditional natural foundation has obvious limitation in resisting vertical and horizontal loads transmitted by the upper structure, and prestressed concrete piles are commonly adopted in the engineering to form pile foundations so as to meet the bearing requirements. However, under complex geological conditions such as high-rise buildings, offshore photovoltaics and the like, pile foundations often bear larger bending moment loads, and the bending resistance of the traditional prestressed concrete pile is difficult to meet actual engineering requirements. In the prior art, in order to improve the bending resistance of pile foundations, a mode of optimizing the arrangement of longitudinal steel bars is generally adopted. For example, chinese patent CN222349743U discloses a photovoltaic pile for an offshore wind farm, and the technical scheme thereof is that longitudinal ribs are configured on a first circumference and a second circumference with a central axis of a pile body as a center of a circle to form a structure with two rows of staggered arrangement, so as to improve the overall bending resistance and shear strength of the pile body. Although the pile performance is improved to a certain extent by the scheme, the design of the end plate for fixing the longitudinal steel bars still has the obvious defect that each group of steel bar penetrating hole units which are arranged along the radial direction can only fix a single prestressed steel bar, so that a large number of steel bar penetrating holes need to be formed in the end plate. The integral strength and stability of the end plate are weakened, and uneven stress of the end plate after prestress tensioning can be caused by overlarge hole spacing, so that flatness is affected. In addition, the dense open-cell structure is easy to cause stress concentration phenomenon, and fatigue damage of the end plate can be accelerated under the long-term load effect, so that the durability of the precast pile is reduced. Disclosure of Invention The utility model is made in consideration of the above problems, and an object of the utility model is to provide an end plate and a precast pile, wherein each anchor Zhang Kongna is provided with two upsetting anchor holes, namely, each anchor hole can fix two reinforcing steel bars, so that the number of anchor holes can be reduced, the strength of the end plate can be improved, and the durability of the precast pile can be improved. To achieve the above object, the present utility model provides an end plate comprising: An end plate body having a plurality of anchors Zhang Kong thereon, a plurality of the anchors Zhang Kong being spaced apart on the end plate body; Each anchor hole comprises a bolt hole, two rib sliding grooves and two upsetting anchor holes, wherein the two upsetting anchor holes are arranged on two symmetrical sides of the bolt hole, and each upsetting anchor hole is respectively communicated with the bolt hole through one rib sliding groove. According to the above-mentioned end plate, the end plate main body is circular, the anchors Zhang Kong are arranged on the end plate main body in an annular arrangement, and the centers of the bolt holes are all located on the same circumference. According to the above-mentioned end plate, a first straight line is arranged between the center of the end plate main body and the center of the bolt hole, a second straight line is arranged between the centers of the two heading anchor holes of the same anchor Zhang Kongna, and the second straight line coincides with the first straight line. According to the above-mentioned end plate, a first straight line is arranged between the center of the end plate main body and the center of the bolt hole, a second straight line is arranged between the central axes of the two heading anchor holes of the same anchor Zhang Kongna, a first included angle is arranged between the second straight line and the first straight line, and the first included angle is larger than 0 degrees and smaller than 90 degrees. According to the above-described one of the end plates, the first included angle is set to 45 °. According to the above-mentioned end plate, the end plate main body is integrally square, the anchors Zhang Kong are integrally square and arranged on the end plate main body, the central axes of the bolt holes are all located on the same square, a second straight line is arranged between