Porous-Structure Device Suppressing Wave Run-Up on Marine Columns
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Solution Overview
Problem
Existing marine structures face challenges in suppressing wave run-up around columns, which leads to increased risk of equipment damage and safety hazards due to wave impacts, as current solutions are restricted by weight, stability, and engineering costs.
Innovation Solution
A porous-structure device is designed for marine platforms, comprising adjustable multi-layer porous structures with specific porosity and installation heights on columns, which effectively suppress wave run-up without compromising the hydrodynamic performance of the platform.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the height of the deck is increased to suppress wave run-up, then wave run-up is reduced, but the weight and engineering cost of the platform increase
Solution Approach 1:
The patent applies porous structures attached to the column surfaces to suppress wave run-up. The porous material allows water to pass through while dissipating wave energy, reducing the harmful wave run-up effect without requiring increases in deck height or platform weight.
Solution Approach 2:
The porous structure is divided into multiple layers with different porosity values arranged in sequence. This segmentation allows each layer to handle different aspects of wave energy dissipation, achieving effective wave run-up suppression while maintaining a compact, lightweight structure.
2Reliability
If the deck height is increased to prevent wave impact, then safety is improved, but the stability and engineering cost are adversely affected
Solution Approach 1:
The porous structures provide safety by dissipating wave energy and reducing wave run-up height, preventing wave impact on the deck without requiring increased deck height that would affect platform stability.
Solution Approach 2:
The porous structure design allows for adjustable parameters including porosity values and layer thicknesses, enabling optimization of wave suppression performance while maintaining platform stability under various sea conditions.
3Object-affected harmful factors
If porous structures are added to suppress wave run-up, then wave run-up is reduced, but the device complexity increases
Solution Approach 1:
The porous structure is segmented into multiple layers with gradient porosity values. While this segmentation improves wave run-up suppression effectiveness, the patent optimizes the number of layers and their configurations to balance performance with structural complexity.
Solution Approach 2:
The patent optimizes key parameters such as porosity values (ranging from 0.4 to 0.8), layer thicknesses, and total structure height to achieve effective wave run-up suppression while minimizing the added structural complexity and maintaining ease of installation.
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 device effectively reduces wave run-up impacts while maintaining the platform's hydrodynamic performance, is adjustable for different sea conditions, and is cost-effective, avoiding the need for significant structural changes.
Implementation Method 1
A plurality of through holes penetrate through the surfaces of the porous laminated plates, the plurality of porous laminated plates are arranged in parallel
Implementation Method 2
A porous-structure device for suppressing wave run-up comprises a marine platform... A porous device is disposed outside each column and is formed by combining and connecting four single components
Data Source
AI summary
A porous-structure device includes a semi-submersible platform consisting of four columns, two pontoons, two horizontal supports and a deck. Fillets on middle portions of the columns have a square section, a radius of the fillets, close to the deck and the pontoons, of the columns is gradually decreased to 0, a porous device is disposed outside each column and is formed by combining and connecting four single components, and each single component is formed by combining and connecting a plurality of porous laminated plates and a plurality of connecting pieces. The parameters, such as the pore type, porosity, number of layers, interlayer spacing and installation height, of the porous laminated plates are set according to the wave characteristics in different sea areas.