An extruded branch pile structure suitable for karst development area
By adopting a design that combines cast-in-place piles and expanded support plates in the expansion and spur piles in karst development areas, and with the help of linkage central rods and positioning steel reinforcement rings, the synchronous deployment and rapid locking of multi-layer support plate reinforcements were achieved, solving the problem of structural instability and improving tensile strength and construction efficiency.
CN224478443UActive Publication Date: 2026-07-10GUANGZHOU HIGHWAY ENG GRP CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU HIGHWAY ENG GRP CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-07-10
AI Technical Summary
Technical Problem
The existing squeezed-expanded support pile structure lacks a stable locking structure in karst development areas, resulting in insufficient pull-out resistance.
Method used
The structure adopts a combination of cast-in-place piles and extrusion support plates, and with the linkage lifting of the linkage rod and the positioning steel bar ring frame, the multi-layer support plate steel bars are simultaneously unfolded and formed, and the positioning steel bar ring frame is quickly locked to improve the structural stability.
Benefits of technology
It improves the pull-out resistance in karst development areas, ensures convenient construction and more stable structure, and has a significant locking effect.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN224478443U_ABST
Abstract
This utility model relates to the field of pile foundation construction technology and discloses a spur-expanded support plate pile structure suitable for karst development areas. It includes a main pile body with positioning steel reinforcement rings distributed inside. The main pile body includes a cast-in-place pile, and spur-expanded support plates are distributed on the outer wall of the cast-in-place pile. A steel reinforcement cage is pre-embedded inside the cast-in-place pile. A linkage central rod is fitted in the middle of the steel reinforcement cage through the positioning steel reinforcement rings. A pressure head is fixed at the top of the linkage central rod, and linkage plates are fixed around the linkage central rod. Linkage shafts are distributed around the bottom surface of the linkage plates. This utility model is formed by casting the cast-in-place pile and spur-expanded support plates. With multiple sets of arranged spur-expanded support plates, it can further improve the tensile strength in this area. Furthermore, with the linkage of the central rod, the reinforcement of multiple support plates is simultaneously expanded and formed, making the operation convenient. The positioning steel reinforcement rings allow for quick locking, resulting in a more stable structure.
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