Hollow Metal Pole Reinforcement via Internal Injection
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Solution Overview
Problem
Hollow metal utility poles, despite their environmental benefits, face groundline damage and loss of strength due to soil, moisture, and oxygen contact, leading to potential structural failure, as their thin walls are prone to corrosion, especially in the groundline zone which experiences high stress.
Innovation Solution
A method involving delivering a flowable composition into the hollow of the pole, which sets to form a non-flowable material providing additional support near the groundline, incorporating reinforcement supports like steel bars or fibers embedded within the composition to enhance strength, and using spacers to maintain their position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If steel utility poles are used to replace timber poles, then environmental benefits and durability are improved, but groundline corrosion and strength loss occur due to contact with soil, moisture and oxygen
Solution Approach 1:
The patent converts the harmful corrosive environment into a beneficial curing environment by using the same soil, moisture and oxygen that cause corrosion to cure the injected composition. The composition is specifically designed to harden when exposed to these elements, transforming the harmful groundline zone into a protective reinforcement zone that eliminates corrosion damage.
2Strength
If welding, bolting or strapping is used to reinforce pole groundline, then strength is improved, but structural integrity and reliability may be compromised
Solution Approach 1:
The patent places reinforcement composition and supports inside the existing hollow pole structure, nesting the reinforcement within the pole's internal cavity. This internal reinforcement approach strengthens the groundline without adding external attachments that could compromise structural integrity or require complex welding and bolting operations.
3Ease of manufacture
If hollow pole walls are made thin to reduce material usage, then ease of installation and cost are improved, but susceptibility to corrosion and strength loss increases
Solution Approach 1:
The patent creates a composite structure by injecting a rigid composition that hardens into a solid reinforcement core within the hollow pole. This composite of the existing thin-walled pole plus the internalized rigid composition provides enhanced strength and corrosion resistance while maintaining the original thin-walled construction advantages.
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 method effectively reinstates groundline strength, extends the life of the poles, and does so at a lower cost without compromising aesthetics, by creating a reinforced concrete core that protects against corrosion and structural failure.
Implementation Method 1
delivering a flowable composition into the hollow of a planted pole, the flowable composition being capable of setting in the hollow at least proximate to the groundline of the planted pole to form a substantially non-flowable composition when set
Data Source
AI summary
A method is described for reinforcing to extend the life of a planted pole, including a metal planted utility pole at risk of, or damaged by corrosion. The method comprising delivering a flowable composition into the hollow of the planted pole, the flowable composition being capable of setting in the hollow at least proximate to the groundline to form a substantially non-flowable composition when set; the set composition comprising reinforcement supports, and being attached to the pole to provide additional support for the planted pole at least proximate to the groundline.