Offshore Pile Installation System Using Counterweight Pressing
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Solution Overview
Problem
Traditional offshore foundation pile installation methods, such as hammering, generate significant noise and vibrations harmful to wildlife and risk deforming or weakening the piles, leading to costly and time-consuming mitigation measures.
Innovation Solution
A pile installation system that uses a main body and movable part with a counterweight frame of reference, allowing for the installation of piles by pushing rather than hammering, with the option to simultaneously translate and rotate the pile, reducing installation force and noise, and incorporating an elongated sleeve to maintain pile distance and facilitate supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the hammering method is used to drive foundation piles into the seabed, then the piles can be installed relatively quickly, but significant noise and vibrations are generated which are harmful to wildlife and require costly mitigation measures
Solution Approach 1:
The patent replaces the traditional hammering method (impact mechanics) with a pushing method using a controlled mechanical press. The pressing device applies gradual, controlled force through a hydraulic or mechanical press, substituting the high-impact hammering mechanism with a low-impact controlled pressing mechanism, thereby eliminating harmful noise and vibrations while maintaining installation productivity
Solution Approach 2:
The patent changes the force application parameters from high-impact, short-duration hammering blows to low-impact, extended-duration pushing forces. The pressing device maintains controlled force application over a longer period, transforming the temporal and magnitude parameters of force application to eliminate harmful environmental effects while achieving the same installation objective
2Productivity
If the hammering method is used to drive foundation piles, then piles can be installed, but the large applied load risks deforming or weakening the foundation piles
Solution Approach 1:
The patent fundamentally changes the force application parameters from high-magnitude impact loads to controlled, gradual pushing forces. The pressing device applies force progressively over time, maintaining the pile's structural integrity by avoiding sudden load spikes that cause deformation or weakening, while still achieving the necessary installation depth
Solution Approach 2:
The pressing device operates through controlled periodic cycles of force application and release, gradually pushing the pile into the seabed. This periodic, controlled action allows the pile to be progressively installed without subjected to the extreme transient loads of hammering, thereby maintaining structural integrity while achieving installation productivity
3Force
If the hammering method is used for pile installation, then piles can be driven into the seabed, but cumbersome actuators are required to apply the large necessary loads
Solution Approach 1:
The patent replaces complex hammering actuators with a simpler controlled pressing mechanism. Instead of requiring complex systems to generate and control high-impact hammer blows, the pressing device uses a straightforward hydraulic or mechanical press that applies gradual, controlled force, significantly reducing actuator complexity while maintaining installation capability
Solution Approach 2:
The patent employs hydraulic or pneumatic pressing mechanisms to generate the necessary installation force. These fluid-based systems provide smooth, controlled force application through hydraulic pressure or pneumatic pressure, replacing complex mechanical hammering actuators with simpler, more controllable fluid-powered pressing devices that reduce overall system complexity
Data Source
AI summary
This pile installation system for an offshore foundation construction includes a main body, a movable part and a first means for attaching the main body to a frame of reference. This frame of reference is configured to act as a counterweight. It further includes a second means for attaching the movable part to a pile to be installed, and the movable part may be moved, with respect to the main body, in translation about the direction of an insertion axis.