Geocomposite with 3D Geomat for Impact Absorption
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Solution Overview
Problem
Existing geocomposites face limitations such as loss of insulating and draining efficiency under localized high pressures and insufficient thickness for shock absorption, particularly in applications like playing fields, leading to inadequate impact absorption and potential damage to athletes.
Innovation Solution
A geocomposite comprising multiple layers of geotextiles separated by a three-dimensional geomat with a thickness of approximately 4 to 5 mm, where the geotextiles are thermofixed to the geomat and optionally connected with geogrids or geomembranes, providing enhanced shock absorption and resistance to crushing without compromising drainage capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a geogrid is used as the intermediate separation layer, then the geocomposite provides drainage and separation functionality, but under localized high pressures the geotextile webs come into contact through the geogrid openings, causing loss of insulating and draining efficiency
Solution Approach 1:
The patent changes the physical state and mechanical properties of the intermediate separation layer by using a three-dimensional random mesh structure with controlled cell size (0.5-5mm) and void ratio (60-80%). This structural parameter optimization allows the layer to maintain its separation function under localized high pressures while providing adequate drainage capability, resolving the contradiction between drainage efficiency and resistance to crushing.
Solution Approach 2:
The patent creates a composite structure combining geotextile webs with a three-dimensional random mesh intermediate layer. This composite design integrates the separation and drainage functions of the mesh with the structural support and filtration properties of the geotextiles, achieving both reliable drainage efficiency and resistance to crushing forces.
2Object-affected harmful factors
If the geocomposite thickness is increased to improve shock absorption capability, then impact absorption for playing fields is enhanced, but the cost and complexity of the structure increase
Solution Approach 1:
The patent utilizes a porous three-dimensional random mesh structure with high void ratio (60-80%) as the intermediate layer. This porous configuration provides excellent shock absorption and impact energy dissipation capabilities while maintaining a relatively thin overall structure, thereby enhancing protection without significantly increasing structural complexity or cost.
Solution Approach 2:
The patent transitions from traditional planar separation layers to a three-dimensional random mesh structure. This dimensional change creates a volumetric network that provides superior shock absorption and impact resistance within a compact thickness, effectively addressing the harmful effects without requiring excessive structural complexity.
3Reliability
If relatively rigid geotextile webs are used to withstand localized flexion under high pressure, then the geocomposite maintains its function under pressure, but the cost of the geotextile webs and the geocomposite increases
Solution Approach 1:
The patent optimizes the parameters of the intermediate separation layer, specifically the cell size (0.5-5mm) and void ratio (60-80%), to provide adequate structural support and pressure distribution. This allows the use of more cost-effective geotextile webs that do not require excessive rigidity, as the optimized mesh structure itself contributes to withstanding localized pressures.
Solution Approach 2:
The high void ratio (60-80%) porous three-dimensional random mesh structure provides both drainage functionality and structural support. This porous architecture distributes localized pressures effectively, reducing the requirement for expensive rigid geotextiles while maintaining functional stability under pressure conditions.
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 effectively absorbs shocks and maintains drainage efficiency even under high localized pressures, making it suitable for applications like playing fields and landfill sites, while being cost-effective and flexible in production.
Implementation Method 1
The geotextiles are thermofixed to the geomat
Data Source
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AI summary
A geocomposite which is suitable for the consolidation and/or drainage of ground, composed of a plurality of layers comprising at least a first web (12) of geotextile and at least a second web (14) of geotextile which are thermofixed to the sides of an intermediate separation layer (16) which is produced by means of at least one geomat of entangled plastics threads having a thickness of approximately from 4 to 5 mm, or more. This geocomposite may be used as a basis in order to form a complex geocomposite, in which there is thermofixed to at least one of the webs (12, 14) of the basic geocomposite (10) at least one additional layer (19, 42, 44) of a geosynthetic selected from the group comprising geogrids, geonets, geomats, geotextiles, geomembranes or a combination or stratification thereof.