Pre-Stressed Insulated Concrete Panels for Low-Stress Side Lifting
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Solution Overview
Problem
Existing methods of forming pre-stressed insulated concrete panels face challenges such as high stress during lifting and the need for a large work area due to forming in a flat configuration.
Innovation Solution
The method involves forming pre-stressed insulated concrete panels with a horizontal thickness and vertical width, using transportable forms that allow pouring and curing on-site, reducing stress and eliminating the need for additional rigging eyes by lifting on the side, and incorporating features like insulation, rebar, and pre-stressing cables for enhanced strength and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If pre-stressed insulated concrete panels are formed in a flat configuration with thickness extending perpendicularly from the forming surface, then the panel can be easily formed, but enormous stress is applied to the panel during lifting
Solution Approach 1:
The patent inverts the traditional forming orientation by positioning the panel thickness in the horizontal direction rather than perpendicular to the forming surface. The panel is formed lying on its side with the thickness dimension extending horizontally, which fundamentally changes the stress distribution during lifting and eliminates the need for additional rigging eyes.
Solution Approach 2:
The patent changes the dimensional orientation of the panel during forming. Instead of forming with thickness vertical (perpendicular to forming surface), the panel is formed with thickness horizontal, effectively rotating the panel 90 degrees in the forming process. This dimensional change allows lifting from the side without creating bending stresses.
2Ease of manufacture
If pre-stressed insulated concrete panels are formed in a flat configuration, then the panel can be formed using conventional methods, but a larger work area is required
Solution Approach 1:
The patent inverts the traditional forming orientation by positioning the panel thickness in the horizontal direction rather than perpendicular to the forming surface. This inversion allows the panel to be formed in a more compact configuration, reducing the required work area while maintaining ease of formation.
3Ease of operation
If additional rigging eyes are added to the panel for lifting, then the panel can be lifted more easily, but the panel complexity increases and stress concentration occurs
Solution Approach 1:
The patent eliminates the need for additional rigging eyes by inverting the forming orientation. The panel is formed with its thickness horizontal, allowing it to be lifted from its side using the existing panel structure itself as the lifting surface, thereby reducing complexity and avoiding stress concentration at rigging eye locations.
Solution Approach 2:
The patent extracts the need for additional rigging eyes from the lifting system by changing the forming orientation. The side of the panel itself becomes the lifting surface, removing the requirement for separate rigging components and simplifying the overall lifting mechanism.
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 approach minimizes stress on the panels during lifting, reduces shipping costs, and allows for efficient on-site production, resulting in stronger and more cost-effective concrete panels with improved bending strength and seismic resistance.
Implementation Method 1
two or more sets of pre-stressed cables
Implementation Method 2
minimize stress on the pre-stressed insulated concrete panels
Data Source
AI summary
Pre-stressed insulated concrete panels are disclosed. Methods of making and using pre-stressed insulated concrete panels are also disclosed.