Spiral Anchor Bracket for Blast Shelter Torsional Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing anchor systems for blast-resistant shelters lack efficiency and reliability in securing the structure to the ground, particularly under torsional strain and blast conditions, and require complex installation processes.
Innovation Solution
An anchoring system comprising a spiral-bracketed base beam anchored to the perimeter slab using screw anchors, where the bracket is spirally wound around the beam and secured with holes at strategic positions, allowing for secure coupling without external guy wires and facilitating a simplified manufacturing method involving a pipe and motor setup to create the bracket.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional anchor systems are used for blast-resistant shelters, then installation is straightforward, but the system lacks reliability under torsional strain and blast conditions
Solution Approach 1:
The patent employs a spiral bracket configuration that wraps around the base beam in a curved, helical pattern. This spiral geometry distributes torsional forces along the curved path rather than concentrating them at single attachment points, significantly improving reliability under rotational and blast loads while maintaining a relatively simple single-piece bracket design.
Solution Approach 2:
The anchor system is divided into distinct functional components: the spiral bracket portion that resists torsional forces, the end portions that attach to the base beam, and the screw anchor attachment points. This segmentation allows each component to be optimized for its specific function while working together as an integrated system.
2Reliability
If complex anchor systems with multiple components are used, then reliability under blast conditions improves, but installation complexity and time increase
Solution Approach 1:
The spiral bracket is designed as an integrated component that combines multiple functions: it provides torsional resistance through its spiral geometry, attaches to the base beam at multiple points simultaneously, and incorporates screw anchor mounting features directly into the structure. This merging of functions into a single component reduces installation time while maintaining blast resistance.
Solution Approach 2:
The bracket is pre-configured with holes and attachment features positioned at optimal locations for blast resistance before installation. The spiral geometry and attachment point locations are predetermined during manufacturing, eliminating the need for complex field measurements and adjustments during installation, thus reducing installation time.
3Manufacturing precision
If spiral brackets are manually fabricated, then manufacturing precision can be achieved, but production efficiency and productivity are low
Solution Approach 1:
The patent replaces manual fabrication processes with automated mechanical systems. A pipe rotation mechanism combined with a welding apparatus automatically creates the spiral bracket configuration by rotating the base beam and depositing material in a controlled spiral pattern, ensuring consistent precision while dramatically increasing production rate compared to manual fabrication.
Solution Approach 2:
The manufacturing process controls key parameters such as rotation speed, welding deposition rate, and spiral pitch to achieve consistent bracket geometry. By standardizing these parameters through automated control systems, the process maintains high manufacturing precision while enabling continuous production that significantly outpaces manual fabrication methods.
Data Source
AI summary
Blast resistant shelters and structural designs therefor according to which the structural designs include anchoring systems and manufacturing of the anchoring system. The anchoring systems include at least one bracket with a spiral winding and opposing first and second end portions. The first end portion includes two holes, and the second end portion includes two holes. The spiral winding is disposed between the first end portion and the second end portion.