Expanding Foundation System for Solar Racking
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Solution Overview
Problem
Existing foundation systems for solar racking systems struggle to absorb compressive and tensile forces effectively, require high installation torque, and are not cost-effective or easy to install.
Innovation Solution
A foundation system featuring a foundation pile with an upper and lower section, where the lower section includes a notch and leg bits that expand upon curing of an expanding substrate, forming a wedge shape to enhance stability and load absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional foundation pile is used, then the installation torque is high, but the ease of installation deteriorates
Solution Approach 1:
The foundation pile is divided into multiple segments including an upper section, lower section, and expandable section that can be assembled separately. This segmentation allows for easier installation with lower torque requirements compared to a monolithic foundation pile.
Solution Approach 2:
The foundation pile incorporates an expandable section that can change from a compressed installation state to an expanded operational state. This dynamic transformation enables the pile to be installed with low torque and then expand to provide enhanced structural support, resolving the contradiction between ease of installation and load-bearing capacity.
2Strength
If a traditional foundation pile is used, then the structure is simple, but the ability to absorb compressive and tensile forces deteriorates
Solution Approach 1:
The foundation pile is segmented into functional sections: upper section, lower section, and expandable section. Each segment performs specific functions, with the expandable section providing enhanced load absorption capacity through its ability to deform and expand under compressive and tensile forces.
Solution Approach 2:
The expandable section changes its physical parameters (volume, shape) in response to applied loads. Under compressive or tensile forces, the section expands to increase its load-bearing capacity, allowing the foundation to absorb greater forces without significantly increasing overall structural complexity.
3Reliability
If the foundation pile is made more stable, then the reliability improves, but the installation torque increases
Solution Approach 1:
The foundation pile uses a dynamic expandable section that remains compact during installation (low torque) and expands only when subjected to operational loads. This dynamic behavior achieves high reliability and stability during operation without requiring high installation torque, as the expansion occurs after installation rather than during the driving process.
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
The expanding foundation system effectively absorbs greater compressive and tensile forces, is stable, cost-effective, easy to install, and requires low installation torque, thereby enhancing the structural integrity and efficiency of solar racking systems.
Implementation Method 1
a predetermined amount of expanding substrate may be poured into a hole located at the upper section of the foundation pile. When the expanding substrate cures, the lower section of the foundation pile is caused to move from the unexpanded state to the expanded state
Data Source
AI summary
A foundation system for supporting a structure may include a main post, a racking post, and a barb assembly. The main post may include an upper section and a lower section below the upper section. The racking post may be telescopically connected to the upper section of the main post. The barb assembly may be connected to the lower section of the main post. The barb assembly may be configured to move from an unexpanded state to an expanded state, thereby forming a wedge shape at a lower section of the main post.