Thermoplastic Pile Guide Construct for Floating Docks
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Solution Overview
Problem
Current pile guide constructs for floating docks do not effectively limit excessive vertical travel, which can lead to the dock becoming detached from the piles during storms or tidal changes, and there is a need for a solution that allows desired vertical movement while preventing horizontal movement.
Innovation Solution
A pile guide construct featuring an elongated sleeve over a pile with a guide that traverses vertically, limiting horizontal movement, and using thermoplastic materials for durability and low friction, along with a limiting cap and collar to control vertical travel, ensuring the dock remains attached to the piles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the dock is allowed to move vertically freely on the piles, then the dock can accommodate water level changes and tidal activity, but the dock may exceed the height of the piles and become detached during storms or flooding
Solution Approach 1:
The limiting cap is pre-installed on the pile at a predetermined height to prevent the guide (and thus the dock) from traveling beyond the safe vertical limit. This preliminary constraint counteracts the potential harmful effect of excessive vertical travel during storms or flooding, ensuring the dock remains attached to the pile while still allowing normal tidal movement.
2Reliability
If a limiting structure is added to prevent excessive vertical travel, then the dock remains attached to the piles, but the structure may be damaged by excessive vertical travel
Solution Approach 1:
The guide acts as an intermediary element between the dock and the limiting cap. It transmits the vertical movement of the dock while being constrained by the limiting cap, thereby protecting the cap from direct impact forces and excessive travel that would cause damage. The guide absorbs and distributes the mechanical stresses during abnormal events.
3Strength
If traditional materials like metal are used for the pile guide, then the structure is strong, but it is susceptible to corrosion and barnacle growth in marine environments
Solution Approach 1:
The invention uses thermoplastic materials (such as high-density polyethylene) for the guide and limiting cap components. These materials provide a composite solution that combines adequate structural strength with inherent resistance to corrosion and barnacle growth, eliminating the need for protective coatings or maintenance associated with traditional metal materials in marine environments.
4Reliability
If a limiting cap is installed to prevent excessive vertical travel, then the dock is restrained from detaching, but the device complexity increases
Solution Approach 1:
The limiting cap is integrated directly onto the pile structure, merging the limiting function with the existing pile. The guide is designed to traverse the sleeve and interact with the limiting cap in a simple, straightforward manner. This integration approach minimizes the number of separate components and simplifies the overall construct while maintaining reliable attachment.
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
The solution allows for controlled vertical movement of floating docks while preventing horizontal movement, maintaining attachment to the piles even in high water conditions, and is durable and resistant to corrosion and barnacle growth.
Implementation Method 1
providing a construct having a low coefficient of friction that facilitates vertical movement of the guide relative to the sleeve and the pile
Implementation Method 2
Smooth plastic surfaces also resist barnacle growth
Data Source
AI summary
A pile guide construct for floating docks. An elongated and vertical sleeve is positioned over a pile that is driven into the earth. A guide is positioned over the elongated and vertically positioned sleeve. A limiting cap is positioned an upper end of the sleeve that acts as a stop to prevent the guide from exceeding a vertical height that is greater than the height of the pile. Forming the sleeve and guide of thermoplastic, such as high density polyethylene, provides a sleeve and guide that are both durable and corrosion resistant, while also providing a construct having a low coefficient of friction that facilitates vertical movement of the guide relative to the sleeve and the pile. A collar mounted to the sleeve and spaced apart from the limiting cap may also be provided to provide a lower limit of travel of the dock relative to the pile.