Pivotal Pile Guide for Uneven Substrates
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Solution Overview
Problem
Existing pile guides are not effectively suited for driving piles into uneven or undulating underwater substrates with localized variations in level, as they tend to support the pile guide at different angles, leading to piles being driven in non-vertical orientations and requiring strengthened or protected support actuators to withstand lateral loads.
Innovation Solution
A pile guide with a support frame that allows pivotal movement about two axes of rotation, eliminating the need for strengthened support actuators, and featuring a universal joint or resiliently flexible members to accommodate uneven substrates, ensuring vertical alignment of pile guide members and resisting demounting under lateral loading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a pile guide is supported on an uneven substrate, then the pile guide can be positioned on the substrate, but the pile guide members will be misaligned and piles will be driven in non-vertical orientations
Solution Approach 1:
The support frame is made dynamically adjustable through pivotal movement about two axes of rotation, allowing the structure to adapt its orientation to uneven substrates while maintaining vertical alignment of pile guide members. This dynamic adjustment capability resolves the contradiction between ease of positioning and alignment precision.
Solution Approach 2:
The orientation parameters of the support frame are changed through controlled pivotal movements about two perpendicular axes, enabling the frame to achieve the correct vertical orientation despite the uneven substrate. This parameter adjustment allows the system to maintain manufacturing precision while operating on varied terrain.
2Adaptability or versatility
If variable-length support actuators are used to accommodate uneven substrates, then the pile guide can be positioned on uneven surfaces, but the actuators must be strengthened or protected to withstand lateral loads
Solution Approach 1:
Instead of using variable-length actuators that require strengthening, the invention employs a dynamically adjustable support frame with pivotal movement capability. This dynamic approach provides substrate accommodation through orientation adjustment rather than length variation, eliminating the need for strengthened actuators while maintaining adaptability.
Solution Approach 2:
The mechanical system of variable-length actuators is replaced with a rotational pivot system. The pivotal movement mechanism substitutes for the linear extension/compression mechanism, providing the same adaptability function without the structural strengthening requirements associated with lateral load resistance in actuators.
3Manufacturing precision
If a support arrangement with two degrees of rotational freedom is used, then the pile guide members can be aligned vertically on uneven substrates, but the device complexity increases
Solution Approach 1:
The support arrangement with two degrees of rotational freedom serves multiple functions: it accommodates uneven substrates, enables vertical alignment of pile guide members, and provides stability during pile driving. This multi-functionality justifies the increased complexity by consolidating several requirements into a single integrated mechanism.
Solution Approach 2:
The two-axis pivotal movement system efficiently changes two orientation parameters (azimuth and elevation angles) to achieve vertical alignment. While this increases device complexity, it provides a systematic and controllable method for parameter adjustment that is more efficient than alternative approaches for achieving precise alignment on uneven surfaces.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise vertical alignment of pile guide members on uneven substrates, reducing the need for strengthened support actuators and minimizing hydrodynamic drag, while maintaining stability during pile driving.
Implementation Method 1
a support arrangement configured to permit pivotal movement of the support frame relative to the base frame about a first axis of rotation
Implementation Method 2
Alternatively or additionally, the support arrangement may comprise a resiliently flexible member, such as a coil spring or a rod of rubber or plastics material
Data Source
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AI summary
A pile guide (10) for supporting a pile as it is driven into a substrate (20) comprises a base frame (12) having a substrate-engaging surface (14) and a plurality of pile guide members (16) coupled to a support frame (18), each pile guide member being configured to guide a pile in a respective predetermined direction therethrough as it is driven into the substrate. The support frame (18) is mounted on the base frame (12) via a support arrangement (22) configured to permit pivotal movement of the support frame relative to the base frame about a first axis of rotation (R1).