Auxiliary Device and Method for Recovering Forepoling Grouted-Steel Pipe Piles Used in Foundation Pit Support
The auxiliary recovery device and method for forepoling grouted steel pipe piles address the issue of material waste by enabling complete extraction, thereby reducing costs and supporting sustainable construction practices.
US20260193859A1Pending Publication Date: 2026-07-09HEFEI UNIV OF TECH
Patent Information
- Authority / Receiving Office
- US · United States
- Patent Type
- Applications(United States)
- Current Assignee / Owner
- HEFEI UNIV OF TECH
- Filing Date
- 2025-09-19
- Publication Date
- 2026-07-09
AI Technical Summary
Technical Problem
Existing methods for recovering forepoling grouted steel pipe piles result in significant material waste and increased costs due to the unrecovered below-slab sections, hindering low-carbon emission reduction and sustainable construction practices.
Method used
An auxiliary recovery device comprising clamps, clamping hydraulic shafts, lifting hydraulic shafts, and a multi-plane configuration, along with a method involving friction-reducing preparation, measurement, and coordinated crane operation, enables complete extraction of forepoling grouted steel pipe piles.
Benefits of technology
Enhances recycling rates and reduces construction costs while promoting low-carbon emission reduction and sustainable development by facilitating the full recovery of steel pipe piles.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure US20260193859A1-D00000_ABST
Abstract
An auxiliary device and method for recovering forepoling grouted steel pipe piles used in foundation pit support, comprising clamps, clamping hydraulic shafts, an upper plane, lifting hydraulic shafts, and a main plane. The clamping hydraulic shafts are mounted on the upper plane, with four shafts installed. The lifting hydraulic shafts are fixed to the main plane, with their output ends connected to the upper plane. Both the upper plane and main plane are designed to sleeve onto the forepoling grouted steel pipe piles. The recovery device and method disclosed in this invention can significantly improve the recycling rate of forepoling grouted steel pipe piles, thereby substantially reducing construction costs. This innovation not only enhances economic efficiency but also actively promotes low-carbon emission reduction during construction, making positive contributions to environmental protection and sustainable development.
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