Threaded Rebar Centralizer Eliminates Ties
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Solution Overview
Problem
The existing centralizer systems for earth retention systems require ties to secure the centralizer to the rebar, which is time-consuming and increases costs, and can lead to inefficiencies in construction projects due to the need for multiple centralizers on a single piece of rebar across multiple bore holes.
Innovation Solution
A centralizer system that does not require ties, comprising a first and second sleeve section with threaded interior surfaces to engage the rebar, and a radially protruding section that impedes the rebar's movement along the central axis, allowing for secure positioning without additional coupling devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional centralizer systems use ties to secure the centralizer to the rebar, then the centralizer can be securely attached to the rebar, but the construction process becomes time-consuming and costs increase
Solution Approach 1:
The patent combines the centralizer body and the attachment mechanism into a single integrated unit. The centralizer includes a body with an internal cavity that receives the rebar, and a deformation element that deforms under radial compression to create frictional engagement with the rebar surface. This eliminates the need for separate ties or coupling devices, thereby reducing construction time while maintaining secure attachment.
Solution Approach 2:
The centralizer is designed to attach to the rebar automatically through its own structural features. When radial compression is applied to the centralizer body, the deformation element deforms and engages with the rebar surface through friction, creating a self-securing mechanism that does not require external ties or additional fastening components.
2Reliability
If traditional centralizer systems use multiple centralizers on a single piece of rebar, then adequate support is provided across multiple bore holes, but the complexity and cost of the system increases
Solution Approach 1:
The patent divides the centralizer body into multiple sections or segments along its length. Each segment can independently engage with the rebar and provide localized support. This segmentation allows the centralizer to span multiple bore holes effectively while maintaining a relatively simple overall structure, as each segment functions independently to provide support where needed.
3Ease of manufacture
If the centralizer is designed with a simple structure, then manufacturing costs decrease, but the ability to securely attach to rebar without ties is compromised
Solution Approach 1:
The patent utilizes changes in the physical parameters of the deformation element in response to radial compression. When radial force is applied to the centralizer body, the deformation element transitions from a relaxed state to a deformed state, increasing its frictional engagement with the rebar. This parameter change allows the centralizer to achieve secure attachment through a simple structural feature that can be manufactured cost-effectively.
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
This solution enables efficient and cost-effective centralization of rebar within bore holes by eliminating the need for ties, reducing construction time and costs, while ensuring accurate placement and stability of the rebar within the earth retention system.
Implementation Method 1
a first threaded interior surface configured to engage a threaded outer surface of the rebar and to impede the ability of the rebar to slip through the first sleeve section along the referential central axis
Data Source
AI summary
Centralizer for centering rebar within a bore hole comprises a first sleeve section, a second sleeve section and a radially protruding section. A referential central axis of the centralizer passes through the first sleeve section, the referential central axis being a straight line, and the centralizer configured to receive the rebar along the referential central axis. The second sleeve section is spaced from the first sleeve section in a direction along the referential central axis. The radially protruding section is directly or indirectly connected to the first sleeve section and the second sleeve section. The first sleeve section comprises a first threaded interior surface configured to engage a threaded outer surface of the rebar and to impede the ability of the rebar to slip through the first sleeve section along the referential central axis. The centralizer does not require a tie for attachment to rebar.