PHC桩变径组合桩
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CRCC HARBOR & CHANNEL ENG BUREAU GRP
- Filing Date
- 2025-07-30
- Publication Date
- 2026-07-17
AI Technical Summary
In dense sandy geological conditions, existing technologies for pile foundation construction using a combination of long and short piles have several drawbacks. These include reduced contact area between the steel pipe pile and the soil, leading to decreased side friction resistance, and increased equipment requirements and damage risks associated with increasing the length of the steel pipe pile or PHC long pile.
The PHC pile is coaxially set with the first steel pipe pile, and multiple stiffening plates are set between the second steel pipe pile and the first steel pipe pile to form a composite pile by welding. This reduces the internal pressure of the pile body and enhances the penetration force. At the same time, an arc-shaped cladding plate is used to enhance the connection strength and sealing.
It effectively reduces the internal pressure of the pile, enhances the penetration and overall rigidity of the pile, avoids pile cracking, reduces the requirements for construction equipment and production lines, and improves the stability and compressive strength of the composite pile.
Smart Images
Figure CN224514196U_ABST
Abstract
Claims
1. A PHC pile reducing combined pile, characterized in that, include: PHC pile (100). The first steel pipe pile (200) has an outer diameter that is the same as that of the PHC pile (100). The first steel pipe pile (200) and the PHC pile (100) are coaxially arranged. One end of the first steel pipe pile (200) is connected to the PHC pile (100). The second steel pipe pile (300) has the same inner diameter as the PHC pile (100). The second steel pipe pile (300) is coaxially arranged with the first steel pipe pile (200). The second steel pipe pile (300) is located on the side of the first steel pipe pile (200) away from the PHC pile (100). Multiple first stiffening plates (310) are arranged between the first steel pipe pile (200) and the second steel pipe pile (300). The multiple first stiffening plates (310) are evenly distributed around the second steel pipe pile (300) and are arranged radially along the second steel pipe pile (300).
2. The PHC pile reducing combined pile according to claim 1, characterized by, The outer sides of the first stiffening plate (310) are covered with an arc-shaped covering plate (320).
3. The PHC pile reducing combined pile according to claim 2, characterized in that, The arc-shaped cladding plate (320) is arranged along the axial direction of the second steel pipe pile (300). One end of the arc-shaped cladding plate (320) is connected to the outer surface of the second steel pipe pile (300), and the other end of the arc-shaped cladding plate (320) is connected to the outer surface of the first steel pipe pile (200).
4. The PHC pile with variable diameter as described in claim 3, characterized in that, The first stiffening plate (310) includes a first connecting part (311) and a second connecting part (312). The first connecting part (311) and the second connecting part (312) are arranged in parallel. The first connecting part (311) is welded to the first steel pipe pile (200), and the second connecting part (312) is welded to the second steel pipe pile (300).
5. The PHC pile reducing combined pile according to claim 4, characterized in that, The first stiffening plate (310) also includes a top abutment (313), which is disposed on the side of the second connecting part (312) near the pile end of the second steel pipe pile (300). The top abutment (313) bends inward toward the second steel pipe pile (300) and abuts against the pile end of the second steel pipe pile (300).
6. The PHC pile reducing combined pile according to claim 5, characterized in that, The first stiffener (310) further includes a third connecting part (314), which is obliquely disposed between the first connecting part (311) and the second connecting part (312), and is welded to the arc-shaped cladding plate (320).
7. The PHC pile reducing combined pile according to claim 1, characterized by, The first stiffener (310) has a total of 12 pieces.
8. The PHC pile reducing combined pile according to claim 1, characterized by, The first steel pipe pile (200) has a plurality of second stiffening plates (210) on its inner side. The plurality of second stiffening plates (210) are evenly distributed along the circumference of the first steel pipe pile (200). The plurality of second stiffening plates (210) are located at one end of the first steel pipe pile (200) near the PHC pile (100).