Box Retainer Dovetail Profiling for Concrete Shear
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Solution Overview
Problem
The existing box-like storage elements for concrete reinforcement are complex and costly to produce, requiring intricate profiling and bending processes that can lead to bulging and inefficiencies in manufacturing.
Innovation Solution
A box-like storage element with a dovetail profiling design that simplifies bending and flattening during production, allowing for easier manufacturing and improved structural integrity through reduced effort in bending transitions and the use of a one-piece profiled steel sheet with cutouts to prevent bulging, and a closure system using a belt-like holding element for sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a box-like storage element is made from multiple separate components (bottom, side parts) connected by welding or gluing, then the storage element can be assembled, but the production process becomes complex and costly
Solution Approach 1:
The patent combines multiple separate components (bottom and side parts) into a single one-piece profiled steel sheet structure. The box-like storage element is formed from one continuous piece of profiled material, eliminating the need for welding or gluing operations and reducing component count while maintaining structural integrity.
Solution Approach 2:
The patent introduces transverse profiling (dovetail-shaped cross-sections) into the steel sheet that allows the material to be segmented into functional zones (bottom and side walls) while remaining a single continuous piece. The profiling creates natural separation lines that guide bending without requiring additional components or assembly steps.
2Ease of manufacture
If profiled steel sheet is bent to form storage element, then the storage element can be produced, but bulging occurs at bending lines reducing manufacturing quality
Solution Approach 1:
The patent applies different structural characteristics to different regions of the steel sheet. The transverse profiling is strategically positioned and designed with varying dimensions - with flattened portions at bending locations and raised portions in other areas. This local variation in profile geometry allows the material to bend smoothly without bulging while maintaining structural rigidity in non-bending areas.
3Strength
If profiling is added to steel sheet for structural integrity, then shear force transfer improves, but manufacturing complexity increases
Solution Approach 1:
The patent employs asymmetric dovetail-shaped profiling with specific geometric characteristics - the profile sections have different heights and widths, with flattened portions at critical bending locations and raised portions elsewhere. This asymmetric design provides optimized structural performance for shear force transfer while simplifying the manufacturing process compared to symmetric or more complex profiling patterns.
Data Source
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Figure 5~6
AI summary
The invention relates to a box-type flashing element (4) for joint reinforcements for the connection of concrete parts by means of shear engagement. Said flashing element (4) has at least one inner compartment which is defined by two lateral regions (5) extending in the longitudinal direction of the flashing element, and a bottom (6) which also extends in the longitudinal direction of the flashing element. The bottom and/or the lateral regions is/are provided with a profiled section (2, 3) extending perpendicularly to the longitudinal direction (L) of the flashing element, and the flashing element, with its lateral regions (5, 5a) and its bottom (6), is produced as a single component from a flat material comprising the profiled section (2, 3), preferably by performing a bending operation perpendicularly or vertically in relation to said profiled section (2, 3).