FRP Structural Assembly for Retaining Walls
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Solution Overview
Problem
Reinforced concrete retaining walls are heavy, requiring specialized equipment and multiple workers for installation, which increases costs and safety concerns due to manual handling and the need for compliance with safety protocols.
Innovation Solution
A structural assembly using hollow fibre reinforced polymer (FRP) panels and posts, where the panels have a rear wall with outwardly curved portions and the posts have opposed channels to receive the panel sides, allowing for efficient and safer assembly without the need for concrete.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If reinforced concrete is used for retaining walls, then structural integrity is achieved, but weight increases significantly
Solution Approach 1:
The patent uses fibre reinforced polymer (FRP) composite materials to replace traditional reinforced concrete. The FRP panels and posts provide the necessary structural integrity while being significantly lighter, directly resolving the contradiction between strength and weight.
Solution Approach 2:
The patent changes the material parameters from concrete to FRP, which has different density and strength characteristics. This parameter change allows achieving the required structural integrity with reduced weight, enabling easier handling and faster installation.
2Strength
If concrete components are used, then structural integrity is maintained, but manufacturing time increases
Solution Approach 1:
The FRP panels and posts are pre-manufactured using extrusion or pultrusion processes before installation. This preliminary action allows for quality control and structural integrity assurance during manufacturing, followed by rapid on-site assembly, reducing overall project time.
Solution Approach 2:
The manufacturing process parameters are changed from concrete casting (which requires curing time) to FRP extrusion/pultrusion (which is faster and doesn't require curing). This parameter change eliminates the slow setting process and enables faster production and installation.
3Stability of the object's composition
If heavy concrete sleepers are used, then structural stability is achieved, but ease of operation decreases
Solution Approach 1:
The patent replaces heavy concrete sleepers with lighter FRP panels that maintain structural stability through their composite construction. This reduces the weight enough to be easily manipulated by workers without specialized lifting equipment, while still providing the necessary stability for retaining wall application.
Solution Approach 2:
The weight parameter of the sleepers is changed from heavy concrete to lighter FRP material. This parameter change maintains structural stability through optimized panel design while dramatically improving ease of operation and manipulation during installation.
4Reliability
If multiple workers and specialized equipment are used for installation, then safety is improved, but cost increases
Solution Approach 1:
The weight parameter of the components is changed from heavy concrete to lighter FRP. This reduces the need for specialized lifting equipment and multiple workers, lowering installation costs while maintaining safety through proper handling procedures for the lighter materials.
Solution Approach 2:
The patent extracts the need for specialized lifting equipment and multiple workers by using lighter FRP components. This eliminates certain safety requirements and reduces installation complexity, lowering overall costs while maintaining adequate safety standards through simplified installation procedures.
Data Source
AI summary
A structural assembly includes at least one panel, the, or each, panel being hollow and of a fibre reinforced polymer (FRP). The panel includes a front wall, a rear wall, and upper and lower walls, wherein the rear wall is shaped to define at least one outwardly curved portion. The assembly includes at least two posts of FRP. Each post includes two opposed flanges and a web interposed between the flanges such that the flanges and the web define opposed channels, such that opposed sides of the, or each, panel can be received in facing channels of consecutive posts.