Helical Concrete Reinforcement for Faster Beam and Column Assembly
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Solution Overview
Problem
The construction of reinforced concrete structures is time-consuming and labor-intensive due to the manual assembly and tying of metal rebar hoops, which slows down the construction process and increases labor costs.
Innovation Solution
A four-sided tubular helical reinforcement structure made from an elongate drawn wire that can expand to form a compacted or expanded state, allowing for automatic spacing and reduced need for manual tying or welding, with the ability to self-support and adapt to varying forms and levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual assembly and tying of metal rebar hoops is used, then the reinforcement structure can be constructed, but the construction process becomes time-consuming and labor-intensive
Solution Approach 1:
The reinforcement structure is divided into modular components (hoops and longitudinal bars) that can be separately manufactured and then quickly assembled together using wire ties or welding, enabling efficient construction while maintaining structural integrity
Solution Approach 2:
The hoops are pre-formed into predetermined shapes and sizes before being transported to the construction site, allowing for rapid assembly without on-site shaping or forming operations, thus reducing construction time and labor requirements
2Reliability
If multiple wire ties are used to secure hoops to rebar rods, then the hoops remain in place during concrete pouring, but the number of ties increases construction time and labor costs
Solution Approach 1:
Multiple hoops are combined into a continuous spiral reinforcement structure that wraps around the longitudinal bars, providing stable securing with fewer discrete connection points, thereby reducing the number of wire ties needed while maintaining hoop stability during concrete pouring
3Strength
If welding is used to attach hoops to rebar rods, then strong connections are achieved, but the process remains time-consuming and requires skilled labor
Solution Approach 1:
The spiral reinforcement structure utilizes the natural friction and mechanical interlocking between the continuous spiral and longitudinal bars, along with minimal wire tie secures, to achieve stable connections without requiring time-consuming welding operations, thereby reducing both time and skilled labor requirements
Data Source
AI summary
A concrete reinforcement structure 100 for making a reinforced concrete foundation horizontal beam upright or vertical column comprises a square or rectangular helical coil 101 which is manufactured in a compacted length form and can be pulled out under tension to an extended length, secured within formwork or a trench, and supplemented with additional supporting bars or rods 102-105 prior to having concrete poured into the formwork to form a reinforced concrete foundation or horizontal beam structure. The reinforcement structure can be manufactured on site or can be pre-manufactured in a factory and transported to a construction site.