Reinforcement Bar Support Apparatus with Integrated Cradles
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Solution Overview
Problem
Prior structures for supporting reinforcement bars in concrete structures lack structural integrity, stability, and ease of use, often requiring multiple pieces and being difficult to fabricate, leading to increased costs.
Innovation Solution
A robust apparatus with a base, legs, and cradles designed to securely hold reinforcement bars in a parallel arrangement, featuring a central opening, legs with feet for stability, and retaining members to guide and retain the bars, formed from a unitary thermoplastic material for strength and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple pieces are used to capture the reinforcement bars, then the reinforcement bars can be retained, but the device complexity increases and ease of operation decreases
Solution Approach 1:
The patent combines multiple separate components (base, legs, cradles, and reinforcement bar retention features) into a single integrated stand structure. The stand includes a base with multiple legs extending upward, each leg having a cradle with retention features that can capture and hold reinforcement bars. This merging of functions into one unified structure reduces the number of separate pieces needed while maintaining effective retention capability.
2Stability of the object's composition
If complex structures are used to provide stable support, then stability improves, but ease of manufacture decreases and cost increases
Solution Approach 1:
The stand is designed with segmented structural elements including a base, multiple legs, and cradles that can be manufactured as separate components and then assembled together. This segmentation allows each component to be optimized and manufactured independently using simple processes, reducing overall fabrication difficulty while maintaining structural stability when assembled.
Solution Approach 2:
The patent utilizes material parameter changes by specifying concrete densities (23-25 kN/m³) and corresponding stand weight capacities in different embodiments. The stand design can be adjusted by changing dimensional parameters (leg length, base size, wall thickness) to match different concrete weights and stability requirements, allowing flexible adaptation without fundamental design changes.
3Strength
If stands are designed to withstand combined weight of reinforcement bars and concrete, then structural integrity improves, but device complexity increases
Solution Approach 1:
The stand is designed with pre-calculated structural dimensions and material specifications that inherently provide the necessary strength to withstand the combined weight of reinforcement bars and concrete. The base, legs, and cradles are dimensioned in advance based on expected loads, eliminating the need for complex reinforcement or additional structural elements during assembly.
Solution Approach 2:
The stand incorporates composite construction elements combining different materials or material densities in specific configurations. The structure may use reinforced concrete or composite materials that provide high strength-to-weight ratios, enabling the stand to support heavy loads without requiring overly complex designs.
Data Source
AI summary
A structure for supporting reinforcement bars includes a base, and first legs extending upwardly from the opposite sides of the base. Attached to shoulders of the first legs are first and second cradles, each having opposing sidewalls that form channels therebetween. Reinforcement bars inserted into the first and second cradles are retained within the channels by retaining members protruding from the opposing sidewalls. A first base support member spans a central opening in the base between the first legs. Second legs extend upwardly from the first base support member and connect to the cradles. Third and fourth legs extend upwardly from opposing ends of the base and connect to the cradles. The structure includes fillets at various points on the cradles, including fillets connecting the cradles to the shoulders of the first legs.