Concrete Pressure Element Transport Anchor for Double Walls
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Solution Overview
Problem
Existing transport anchors for double walls face issues with steel pressure elements, which can lead to weld seam tearing and reduced stability due to localized weakening, while alternatives like wood or textile-reinforced concrete may absorb forces but risk detachment or damage from moisture and freezing.
Innovation Solution
A transport anchor with a pressure element made entirely of concrete, without reinforcing materials, ensuring uniform material properties and preventing moisture transfer, combined with a flexible base body like a stainless steel cable for enhanced safety and ease of production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a steel pressure element is welded onto the anchor legs, then the pressure element can be securely attached, but the weld seams become weakened areas that can tear and reduce stability
Solution Approach 1:
The pressure element is made of concrete, the same material as the anchor legs and double walls, creating uniform material properties throughout. This eliminates the steel-concrete interface and weld seams that create weakened areas, ensuring homogeneous stress distribution and eliminating the source of instability while maintaining secure attachment through material continuity.
2Force
If a steel pressure element is used, then it can resist forces well, but it locally alters and weakens the surrounding material through welding
Solution Approach 1:
Using concrete for the pressure element creates uniform material properties throughout the structure. The concrete pressure element distributes forces evenly across the anchor legs without creating localized weakened areas, as the material transitions are smooth and homogeneous rather than involving rigid steel interfaces that concentrate stress and create weakness zones.
3Force
If a flexible material like wood is used for the pressure element, then it can absorb forces, but it can absorb liquids leading to corrosion and freezing damage
Solution Approach 1:
The concrete pressure element has the same material properties as the surrounding concrete structure, creating a homogeneous system that is impervious to moisture. Unlike wood, concrete does not absorb liquids, preventing corrosion and freezing damage while still providing adequate force absorption through its mass and structural integration with the anchor legs.
4Ease of operation
If a steel pressure element is slidably held on the base body, then it can move freely, but it cannot remain in position under significant external forces
Solution Approach 1:
The pressure element is monolithically integrated with the anchor legs through the casting process, merging what would otherwise be separate components into a single unified concrete structure. This eliminates the need for sliding or detachable connections, providing both ease of operation (no positioning required) and reliability (cannot detach) through the inherent unity of the cast concrete structure.
Data Source
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AI summary
Transport anchor (20) for double walls, comprising a U-shaped base body with an arc-shaped central section (24) for attaching lifting devices, two anchor legs (26) extending from the central section (24) and running substantially parallel to each other, and a pressure element (28) arranged between the anchor legs (26). According to the invention, the pressure element (28) consists of a castable, hardening material, preferably concrete.