Piling Remediation Using Cap Plate and Pipe Segment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for repairing and reconnecting deteriorated timber pilings are costly, time-consuming, and weaken the structural integrity of pilings when securing girders, especially in marine environments and flood-prone areas, necessitating effective and efficient solutions for piling rehabilitation and girder support.
Innovation Solution
A method involving a piling planing tool that smooths and flattens the top section of pilings, followed by the installation of a pipe segment and cap plate, allowing secure attachment of structural member supports like girder brackets or lally jacks, ensuring solid and reinforced support for girders without the need for extensive piling replacement or structural steel fabrication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the banding method is used to secure girders to pilings, then the girder can be attached to the piling, but the structural integrity of the piling is severely weakened
Solution Approach 1:
A steel plate intermediary is introduced between the girder and piling. The steel plate is positioned against the piling surface and secured with fasteners, while the girder is then attached to the steel plate. This intermediary distributes the load across a larger area of the piling and provides a stronger attachment surface, maintaining structural integrity while enabling secure girder attachment.
2Reliability
If total piling replacement is performed, then structural support is restored, but the process is expensive and time-consuming
Solution Approach 1:
The solution segments the repair process into localized interventions rather than complete replacement. Only the damaged upper section of the piling is addressed by installing reinforcement elements and connection hardware, while the sound lower section remains in place. This segmented approach restores structural support functionality without the time and expense of removing and replacing the entire piling.
Solution Approach 2:
The method performs preliminary reinforcement of the piling before girder attachment. Steel plates, wrap-around members, or other reinforcement elements are installed on the damaged piling section first, creating a strengthened substrate that can then support the girder load. This preliminary strengthening action enables reliable structural support restoration without complete replacement.
3Ease of repair
If repair work is performed in marine environments, then piling damage can be addressed, but the process requires construction of barriers and water removal which increases cost and time
Solution Approach 1:
The repair method is designed to be performed in situ without requiring the piling to be exposed or dried. The steel plate reinforcement and fastening system can be installed while the piling remains in the water, eliminating the need for cofferdams, sheet piling barriers, or pump systems to remove water. The repair system serves itself by working around rather than against the marine environment.
Data Source
AI summary
A method for supporting and securing structural members, such as girders, to remediated pilings utilizes a pipe segment and cap plate positioned on the planed top section of the piling and welded to the pipe segment. Structural member supports, such as girder brackets or lally type jacks, are secured to the cap plate. The girder is positioned on the structural member supports and is secured thereto. By this method the girder is solidly and effectively supported by a fully formed, reinforced piling.