Grid Framework Solid Walled Panels Seismic Stability
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Solution Overview
Problem
Current grid framework structures for storage and retrieval systems are inadequate in withstanding powerful seismic events and storm forces, leading to structural instability and potential collapse, as they rely on external bracing that occupies valuable space and is not cost-efficient, and lack effective earthquake restraint systems for spectral accelerations above 0.33 g.
Innovation Solution
Incorporating a plurality of discrete solid walled panels within the grid framework structure, anchored to the substructure and grid structure, to provide enhanced torsional resistance and stability, reducing the impact of seismic and storm forces by distributing applied forces across the panels' surface area, rather than relying on bracing members that can loosen during intense events.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If external bracing members are used to stabilise the grid framework structure, then structural stability is improved, but valuable storage space is occupied and manufacturing cost increases
Solution Approach 1:
The patent merges the bracing function with the grid members by making the grid members themselves non-prismatic and braced internally. The bracing members are integrated into the grid members rather than being separate external elements, eliminating the need for additional external bracing that would occupy storage space.
Solution Approach 2:
The bracing members are nested within the grid members. Each grid member contains internal bracing members that provide structural stability without extending outside the grid framework, thus not occupying valuable storage space while maintaining structural integrity.
2Stability of the object's composition
If external bracing members are used to stabilise the grid framework structure, then structural stability is improved, but manufacturing cost increases
Solution Approach 1:
The patent combines multiple functions into the grid members themselves - they serve as both structural framework elements and internal bracing members. This integration reduces the total number of separate components needed, simplifying manufacturing processes and reducing overall cost compared to separate external bracing systems.
Solution Approach 2:
The grid members are designed to perform multiple functions simultaneously: providing the grid framework structure, containing stored items, and providing internal bracing for stability. This multi-functionality eliminates the need for separate dedicated bracing components, reducing manufacturing complexity and cost.
3Ease of manufacture
If conventional grid framework structure is used, then ease of manufacture is maintained, but reliability under seismic forces deteriorates
Solution Approach 1:
The patent segments the grid members into modular sections with standardized connection points. Each grid member can be manufactured separately and assembled together, maintaining ease of manufacture while the segmented design allows for integrated bracing members that enhance seismic resistance through distributed structural support.
Solution Approach 2:
The grid members are constructed as composite structures combining prismatic framework elements with integrated bracing members. This composite construction provides both the simplicity of standard manufacturing processes and the enhanced reliability needed to withstand seismic forces through the combined structural system.
Data Source
AI summary
A grid framework structure for supporting a load handling device operative to move one or more containers in a stack. The grid framework structure includes a plurality of upright members forming a supporting framework structure mounted to a substructure; a grid structure including a plurality of grid members arranged in a grid pattern having a plurality of grid cells, each of the plurality of grid cells including a grid opening; and solid walled panels distributed internally within the supporting framework structure such that each of the plurality of solid walled panels lies in a respective vertical plane within the supporting framework structure having a first end anchored to the substructure and a second end secured to the grid structure to provide stability to the grid framework structure.