Additive-Manufactured Stone Structures with Magnetic Sheet-Pile Attachment

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Solution Overview

Problem

Existing biodiversity solutions for underwater areas are not optimal in terms of efficiency, accessibility, and sustainability, and there is a high demand for improving and restoring marine biodiversity.

Innovation Solution

A structure comprising magnets and a stone material, preferably concrete, is additive manufactured and attached to underwater sheet piles using magnetic forces, creating an artificial reef that enhances biodiversity by providing habitats for aquatic life.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If traditional biodiversity solutions are used, then biodiversity improvement is attempted, but efficiency and accessibility are not optimal

Engineering Contradiction:
Improvebiodiversity improvement efficiencyVSAvoidsolution reliability
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The invention changes the physical and chemical parameters of the structure by using additive manufacturing to create specific porosity, surface area, and material composition. The concrete mixture includes expandable agents, fertilizers, and pH-adjusting substances that transform the structure's properties over time, creating optimal conditions for biodiversity improvement while ensuring structural reliability

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The invention uses composite materials combining concrete with organic fertilizers, expandable agents, and pH-adjusting substances. This composite approach creates a multi-functional structure that provides both structural stability and biological enhancement, resolving the contradiction between efficiency and reliability in biodiversity solutions

Inventive Principle:
Principle #40Composite materials

2Ease of manufacture

If additive manufacturing is used for the structure, then manufacturability and sustainability are improved, but manufacturing complexity increases

Engineering Contradiction:
Improvestructure manufacturabilityVSAvoidmanufacturing process complexity
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The invention segments the manufacturing process into distinct phases: preparing the additive mixture with specific components, printing the structure layer by layer, and allowing in-situ expansion and chemical reactions. This segmentation simplifies each individual step while achieving complex overall functionality, improving ease of manufacture without overwhelming complexity

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The structure performs self-service functions through in-situ expansion of embedded agents, automatic pH adjustment, and fertilizer release. These self-service capabilities reduce the need for post-manufacturing interventions and simplify the overall manufacturing process, as the structure completes its own preparation and activation

Inventive Principle:
Principle #25Self-service

3Ease of operation

If magnets are used for attachment, then attachment ease is improved, but magnetic force reliability in underwater conditions may be compromised

Engineering Contradiction:
Improveattachment easeVSAvoidmagnetic attachment reliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The invention uses curved or rounded magnetic attachment surfaces that better conform to the cylindrical sheet pile structures. This curvature improves contact area and magnetic coupling, enhancing attachment reliability in underwater conditions while maintaining ease of operation through simple magnetic attraction

Inventive Principle:
Principle #14Spheroidality (Curvature)

Solution Approach 2:

The magnetic attachment components use composite materials with high magnetic permeability and corrosion resistance. This composite approach maintains strong magnetic forces in the corrosive underwater environment while preserving the ease of magnetic attachment operation

Inventive Principle:
Principle #40Composite materials

4Duration of action of stationary object

If the structure is made entirely of stone material, then durability and sustainability are improved, but manufacturing flexibility decreases

Engineering Contradiction:
Improvestructure longevityVSAvoidmanufacturing flexibility
Core Design Contradiction:
Duration of action of stationary objectVSAdaptability or versatility

Solution Approach 1:

The invention changes the parameters of stone material (concrete) by incorporating expandable agents, fertilizers, and pH-adjusting substances. These parameter changes allow the stone material to exhibit time-dependent properties such as expansion, nutrient release, and pH adjustment, maintaining durability while adding manufacturing flexibility and functional versatility

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The invention applies different local qualities within the stone material structure, with varying concentrations of expandable agents, fertilizers, and pH-adjusting substances in different regions. This local quality variation allows tailored functionality in different parts of the structure while maintaining overall durability and stone material composition

Inventive Principle:
Principle #3Local quality

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 structure efficiently improves underwater biodiversity by offering durable, economical, and sustainable habitats for marine organisms, with easy manufacturability and longevity, utilizing 3D printing technology.

Implementation Method 1

one or more attachments means, preferably one or more magnets

Methodology Applied
Scientific EffectMagnetic force: Magnetism

Data Source

PatentEP4628652A1Additive manufacturing of structures for underwater sheet piles
Publication Date: 2025.10.08 STONEREEFS AS
  • EP4628652A1 patent drawingFigure 1
  • EP4628652A1 patent drawingFigure 2
  • EP4628652A1 patent drawingFigure 3

AI summary

The present invention relates to a structure (100) for attachment to associated underwater sheet pile(s) (200), said structure comprising: one or more attachments means (300), preferably one or more magnets, at least a portion made in a stone material, preferably the entire structure is made of stone material, at least a portion being additive manufactured, preferably the entire structure is additive manufactured, and wherein said structure is adapted to be arranged in the indentation of one or more underwater sheet piles. Furthermore, the invention relates to a method for attaching a structure to a sheet pile, wherein said method comprises the steps of: providing an additive manufactured structure, providing a mounting bracket comprising at least one magnet, releasably attaching the mounting bracket by magnetic force to the one or more sheet piles by positioning said mounting bracket in an indentation of one or more sheet piles.