Flexible Woven Containment Sheets for Corrosion-Resistant Protection
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Solution Overview
Problem
Existing containment structures, such as metal nets and concrete block nets, are economically, structurally, and logistically burdensome, prone to corrosion, and difficult to implement for preventing falling boulders, debris flows, and avalanches.
Innovation Solution
A lightweight, flexible containment sheet with a composite reinforcement strip structure, comprising polymeric coating and longitudinal fibers, allowing for a modular and adaptable design with variable mesh spacing, connected by simple means for easy assembly and transport.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal nets are used for containment structures, then containment effectiveness is achieved, but weight and structural complexity increase significantly
Solution Approach 1:
The patent employs a flexible geosynthetic containment sheet with a woven structure consisting of reinforcement strips arranged in a warp and weft pattern. This flexible film structure replaces heavy metal nets while maintaining containment effectiveness through its engineered weave pattern and material properties, significantly reducing structure weight.
Solution Approach 2:
The containment sheet utilizes composite geosynthetic materials with reinforcement strips embedded within the fabric structure. These composite materials provide high strength-to-weight ratio, achieving reliable containment while minimizing structure weight compared to solid metal alternatives.
2Reliability
If metal nets are used for containment structures, then containment function is provided, but susceptibility to corrosion increases
Solution Approach 1:
The flexible geosynthetic containment sheet is made from inert polymer materials that are inherently resistant to corrosion from water, chemicals, and atmospheric agents. This eliminates the corrosion susceptibility inherent in metal nets while maintaining containment function through the engineered fabric structure.
Solution Approach 2:
The geosynthetic containment sheet uses durable but replaceable polymer materials that, while having finite service life, provide excellent corrosion resistance during their operational period. The sheets can be easily replaced when needed, overcoming the long-term degradation issues of metal structures.
3Reliability
If concrete blocks connected by cables are used for containment, then containment capability is achieved, but device complexity and implementation difficulty increase
Solution Approach 1:
The patent uses a continuous flexible geosynthetic sheet that can be deployed as a complete containment barrier without requiring assembly of discrete concrete blocks and cables. This significantly simplifies device complexity and implementation while maintaining containment capability through the sheet's inherent structural integrity.
Solution Approach 2:
The containment function, reinforcement, and flexibility are merged into a single integrated geosynthetic sheet structure. This eliminates the need for separate concrete blocks, cables, and connection hardware, greatly reducing device complexity and ease of implementation.
4Strength
If metal nets are used for containment structures, then structural strength is provided, but ease of transport and installation deteriorates
Solution Approach 1:
The flexible geosynthetic containment sheet can be easily rolled, folded, or bundled for transport and then quickly deployed at the installation site. This flexibility dramatically improves ease of operation compared to rigid metal nets that require complex handling and assembly procedures.
Solution Approach 2:
The containment sheet is designed to be dynamically deployable, allowing it to be quickly installed and adapted to various terrain conditions. The flexible material can be manually or mechanically deployed without requiring heavy lifting equipment or complex assembly procedures needed for metal structures.
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 containment sheet provides effective, durable, and versatile protection against dynamic and static loads, overcoming corrosion issues and logistical challenges, while being easy to transport and customize for various applications.
Implementation Method 1
a plurality of longitudinal reinforcement fibres arranged within the longitudinal channels... the presence of longitudinal reinforcement fibres gives the reinforcement strip the strength characteristics required for the static and/or dynamic containment function
Implementation Method 2
each reinforcement strip comprises: a polymeric coating capsule surrounding a plurality of longitudinal channels... and a plurality of longitudinal reinforcement fibres arranged within the longitudinal channels
Data Source
AI summary
Containment sheet (1) comprising a flexible weave (2) defined by a plurality of reinforcement strips (3) interwoven with each other in a warp and weft pattern. Each reinforcement strip (3) comprises:—a polymeric coating capsule (4) surrounding a plurality of longitudinal channels (5) extending parallel to a longitudinal extension direction of the reinforcement strip (3) and arranged as aligned in a direction perpendicular to the longitudinal extension direction, and—a plurality of longitudinal reinforcement fibres (6) arranged within the longitudinal channels (5). The containment sheet (1) further comprises at least a connecting portion (7) connected to the flexible weave (2) and suitable for connecting the containment sheet (1) to a further containment sheet (1) and/or to an external structure (E).