Twisted Wire Soil Reinforcement for MSE Structures
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Solution Overview
Problem
Existing mechanically stabilized earth (MSE) structures face challenges in finding soil reinforcing elements that are easy to store and transport while providing sufficient resistance to shear forces, as conventional materials and configurations can be cumbersome and inefficient.
Innovation Solution
The development of soil reinforcing elements comprising twisted wire strands enclosed by a flexible outer member, which maintains the wires spaced apart and configured to enhance tensile strength and resistance, includes designs with parallel wires, converging/diverging patterns, and transverse wires to improve structural integrity and ease of handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional soil reinforcing elements are used, then structural resistance to shear forces is provided, but storage and transport become cumbersome
Solution Approach 1:
The soil reinforcing element is divided into multiple discrete wires (typically two parallel wires) that are spaced apart and individually enclosed by a flexible outer member. This segmentation allows the element to be more flexible and easier to handle during storage and transport, while still providing the necessary structural resistance when installed in the MSE structure.
Solution Approach 2:
A flexible outer member encloses each wire individually, providing protection while maintaining flexibility. The flexible nature of this outer covering allows the reinforcing element to be easily coiled, stored, and transported without compromising the structural integrity of the wires inside, thus resolving the contradiction between strength provision and ease of handling.
2Strength
If wire strands are twisted to enhance strength, then tensile strength increases, but structural complexity increases
Solution Approach 1:
The patent employs composite construction by twisting multiple wire strands together to form stronger wire cables. This composite approach combines simpler wire strands into a more complex but stronger twisted structure, achieving enhanced tensile strength through material composition rather than through overly complex structural arrangements. The complexity is localized to the wire level, not the overall element level.
Data Source
AI summary
A soil reinforcing element for a mechanically stabilized earth structure may include two wires spaced apart from each other (e.g., substantially parallel to each other). Each wire may include at least two wire strands twisted about one another. A flexible outer member may enclose the two wires, may extend between the two wires, and may couple the two wires with each other. The flexible outer member may maintain the two wires spaced apart from each other, and may define at least one aperture between the at least two wires. The flexible outer member may have a protrusion extending along the length thereof. In another exemplary embodiment, a plurality of transverse wires may be coupled to the two parallel wires.