Hollow Polymer Pile Casing with Ribs for Loose Soil Stability
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Solution Overview
Problem
Existing pile technologies lack versatility in material composition and manufacturing location, with limited options for using recycled materials and efficient production methods, particularly in forming stable foundations in loose soil environments.
Innovation Solution
A pile casing made from polymer or composite materials, such as recycled plastic with glass, carbon, or steel fibers, that can be manufactured off-site, on-site, or in situ, allowing for the use of inexpensive materials like sand or demolition rubble, and featuring a hollow structure with ribs and engagement structures to inhibit kinking and enhance stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional pile materials and methods are used, then manufacturing cost and material flexibility are limited, but the ability to use recycled materials and manufacture at various locations is restricted
Solution Approach 1:
The pile is divided into a reusable hollow casing component and a replaceable filling material. The casing can be manufactured at different locations using extrusion processes, then transported and filled with various materials (sand, rubble, recycled materials) at the installation site, enabling both material flexibility and manufacturing location flexibility.
Solution Approach 2:
The hollow casing serves multiple functions: it acts as a structural form during manufacturing, a transport container for the filling material, and a permanent structural element in the ground. This multi-functionality allows the same component to enable manufacturing at various locations while supporting diverse filling materials including recycled materials.
2Ease of manufacture
If inexpensive materials like sand or demolition rubble are used, then material cost is reduced, but structural strength and stability may be compromised
Solution Approach 1:
The pile combines the hollow casing (made from durable polymer or composite materials with ribs for structural integrity) with inexpensive filling materials (sand, demolition rubble). The casing provides the structural framework that maintains strength while allowing the use of low-cost filling materials, achieving both cost reduction and structural stability.
Solution Approach 2:
Different parts of the pile have different functions: the hollow casing provides structural strength and stability with its ribbed design, while the filling material provides bulk and foundational support. This division allows the expensive, strong casing to be used only where structurally necessary, while inexpensive materials fill the remaining volume.
3Strength
If a solid pile structure is used, then structural strength is maximized, but manufacturing complexity and material waste increase
Solution Approach 1:
The filling material is extracted from the manufacturing process and added separately at the installation location. Instead of manufacturing complete solid piles, only the hollow casing is manufactured and transported, then filled on-site. This reduces manufacturing complexity and enables the use of locally available filling materials while maintaining structural strength.
Solution Approach 2:
The hollow casing is prepared in advance with engagement structures and ribs to ensure proper installation and structural integrity. The casing is manufactured ready-to-install, then the filling material is added as a preliminary preparation before the pile is driven into the ground, simplifying the overall manufacturing process.
Data Source
AI summary
A pile casing comprising a hollow that extends through an entire length of the pile casing, wherein the pile casing is manufactured of a first material selected from the group consisting of a polymer material and a composite material comprising a polymer material and at least one of glass fibers, carbon fibers, steel fibers and wood. A pile comprising such a pile casing and a filling that fills the hollow, wherein the filling comprises at least one material selected from the group consisting of sand, gravel, concrete, wood, glass, glass fibers, metal, carbon fibers, steel fibers, basalt fibers, asphalt, asphalt concrete, and a composite comprising at least one material selected from the group consisting of sand, gravel, concrete, wood, glass, glass fibers, metal, carbon fibers, steel fibers, basalt fibers, asphalt and asphalt concrete.