High-Grade Steel I-Beam Posts for Corrosive Solar Farm Soils
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Solution Overview
Problem
Solar farms face challenges in finding suitable land for development due to the large land requirements, especially in areas with corrosive soils or restricted ground penetration, which complicates the installation of solar array foundations that must withstand wind, snow, and seismic forces while resisting corrosion.
Innovation Solution
The use of high-grade steel I-beams, such as those with a yield strength of 60 or 80 ksi, instead of standard 50 ksi steel, for solar array foundations, which provides increased structural longevity and resistance to corrosion, allowing for reduced beam sizes or costs while maintaining performance in corrosive and rocky soils.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If standard 50 ksi steel I-beams are used for solar array foundations, then initial material costs are lower, but structural longevity and corrosion resistance are reduced
Solution Approach 1:
The patent changes the material parameter from standard 50 ksi steel to high-grade 80 ksi steel, transforming the foundation's mechanical properties to achieve superior corrosion resistance and structural longevity while maintaining cost-effectiveness through optimized beam dimensions
Solution Approach 2:
The patent employs a composite approach by combining high-grade steel material with optimized I-beam geometric configuration, creating a foundation system that leverages both material strength and structural efficiency to resolve the contradiction between longevity and cost
2Strength
If larger beam sizes are used to withstand environmental forces, then structural strength is improved, but material costs and installation complexity increase
Solution Approach 1:
The patent utilizes the high strength parameters of 80 ksi steel to enable the use of smaller, more manageable I-beam dimensions that maintain required structural strength while reducing installation complexity and material volume
Solution Approach 2:
Instead of increasing beam size to achieve strength, the patent inverts the approach by using higher-grade steel material to achieve the same or superior strength with smaller, simpler beam sections that are easier to install
3Object-affected harmful factors
If ground penetration is restricted at brownfield sites, then environmental concerns are mitigated, but foundation installation options are limited
Solution Approach 1:
The patent applies high-grade steel material specifically to the above-ground portion of the foundation system, providing localized corrosion protection and structural strength where it is most needed, enabling successful installation at brownfield sites with ground penetration restrictions
Solution Approach 2:
The patent inverts the conventional foundation approach by using heavier, higher-grade steel above-ground I-beams to compensate for the inability to use deep ground penetration, achieving stable foundation support through above-ground structural optimization rather than below-ground anchoring
Data Source
AI summary
A high-grade post or pile system for the foundation of a solar array, which may facilitate the installation of a solar array rack in more corrosive soils. Such a post may also satisfy the need for a foundation able to resist ground forces, in particular the effects of wind on the exterior of the array, and may reduce problems with beam refusal. The post may be used in other applications such as guardrail posts. In contrast to existing posts for solar arrays, the high-grade post may be formed from higher-grade steel.