3D Nonwoven Geotextile Cell Structure for Soil Interlock and Stiffness
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Solution Overview
Problem
Existing geotextile materials in civil engineering applications often lack both sufficient stiffness to resist deformation under load and effective interlock with soil, failing to fully meet the requirements for soil reinforcement.
Innovation Solution
A three-dimensional nonwoven geotextile material with cell structures having a depth of at least 1.0 cm, composed of a nonwoven fiber layer that forms a spatial form, providing high interlock and stiffness through a combination of cell structures and bridging sections, which can be combined with geogrids to enhance stiffness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If geotextile materials are designed to provide high interlock with soil, then soil reinforcement capability is improved, but stiffness to resist deformation under load deteriorates
Solution Approach 1:
The patent transitions from traditional two-dimensional geotextile structures to three-dimensional cell structures with depths of at least 1.0 cm. This dimensional change allows the geotextile to provide both high interlock with soil particles through the cell configuration and sufficient stiffness to resist deformation under load, resolving the technical contradiction between these two properties.
Solution Approach 2:
The patent combines nonwoven fiber layers forming cell structures with geogrids to create a composite geosynthetic material. This composite structure integrates the soil interlock capabilities of the nonwoven cells with the high stiffness and load-bearing properties of the geogrid, simultaneously achieving both high interlock and sufficient stiffness.
2Stress or pressure
If geotextile materials are designed to provide sufficient stiffness, then resistance to deformation under load is improved, but interlock with soil deteriorates
Solution Approach 1:
The patent creates a composite structure combining nonwoven fiber layers that provide soil interlock through their cell structures with geogrids that provide high stiffness. The nonwoven layer with cells of at least 1.0 cm depth ensures effective interlock with soil particles, while the integrated geogrid provides the necessary stiffness to resist deformation under load.
Solution Approach 2:
The geotextile is segmented into distinct functional zones: nonwoven cell structures for interlock and geogrid components for stiffness. This segmentation allows each component to optimize its specific function while working together as an integrated system, resolving the contradiction between interlock and stiffness requirements.
3Strength
If cell structures with depth of at least 1.0 cm are created, then interlock capability is improved, but manufacturing complexity worsens
Solution Approach 1:
The patent merges the formation of three-dimensional cell structures with the nonwoven fabric manufacturing process itself. By integrating the cell structure formation into the existing nonwoven production line, the patent achieves high interlock capability through deep cells (at least 1.0 cm) without significantly increasing manufacturing complexity, as the cell structures are created as part of the fabric formation process rather than as a separate post-processing step.
Data Source
Figure 1A~1C
Figure 2A~2C
Figure 3~4A
AI summary
A three-dimensional geotextile material is provided, the three-dimensional geotextile material comprising a nonwoven layer of fibers, and comprising a multitude of cell structures for confinement of particulate matter, in particular for confinement of clay, sand and/or gravel, the cell structures comprising a base and one or more side walls composed of the nonwoven layer of fibers and forming an opening in the cell structures, the cell structures having a depth, the base of the cell structures having an inner surface and an opposite outer surface, wherein the depth of the cell structures is 1.0 cm or more. Also provided is a three-dimensional geotextile composite material comprising a geogrid connected to the three- dimensional geotextile material. Furthermore, processes for manufacturing the three-dimensional geotextile material and for manufacturing the three-dimensional geotextile composite material are provided.