Expandable Anchorage Pole for Wet Soil Resistance
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Solution Overview
Problem
Existing anchorage devices fail to provide secure resistance in wet soils and sands, as they lack sufficient surface area for resistance and are difficult to remove once embedded, and require excessive material for conical segments.
Innovation Solution
A pole with cup-shaped containers along its length that unfurl upon insertion into soil, chemically reacting with the substance to enhance resistance and allowing easy insertion and secure anchorage, and can be easily withdrawn by twisting to close the containers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a hold down device with conical segments is used to resist removal from soil, then anchorage resistance is improved, but the surface area for resistance remains small and material consumption increases
Solution Approach 1:
The anchorage device is divided into multiple expandable segments along the pole. Each segment can independently expand to engage with the soil, distributing the anchorage function across multiple locations rather than relying on a single large structure. This segmentation allows the device to achieve high total resistance while using less material overall, as each segment is relatively small but collectively they provide substantial holding power.
Solution Approach 2:
The device transitions from a compact linear form during insertion to a three-dimensional expanded form during anchorage. The segments expand radially outward from the pole in the perpendicular dimension, creating multiple contact points with the soil. This dimensional transformation allows the device to occupy more space and engage more soil volume without increasing the material volume of the device itself, thereby improving resistance while reducing material consumption.
2Ease of operation
If a stake is designed to penetrate easily into dry soil, then insertion ease is improved, but resistance to removal in wet soil or sand deteriorates
Solution Approach 1:
The anchorage device employs dynamic segments that can change their configuration and engagement with the soil. During insertion, the segments remain compact, allowing easy penetration. Once in position, the segments expand to engage the soil firmly. This dynamic transformation allows the device to adapt its properties during different operational phases, achieving both easy insertion and strong anchorage without compromising either function.
Solution Approach 2:
The device changes its physical parameters between insertion and anchorage phases. The segments transition from a compressed, low-profile state during insertion to an expanded, high-surface-area state during anchorage. This parameter change allows the device to present a small profile for easy insertion while subsequently providing large surface area and multiple engagement points for strong resistance to removal, effectively resolving the contradiction between insertion ease and anchorage strength.
3Strength
If an anchorage device provides secure resistance in wet soil, then anchorage strength is improved, but ease of withdrawal deteriorates
Solution Approach 1:
The device uses dynamically controllable segments that can be expanded or collapsed. During anchorage, the segments are expanded to provide strong resistance. For withdrawal, the segments are collapsed to reduce engagement with the soil, making removal easier. This dynamic control allows the device to switch between strong anchorage and easy withdrawal modes, resolving the contradiction between these two operational requirements.
Solution Approach 2:
The device prepares for easy withdrawal by incorporating collapsible segments that can be pre-configured in a compact state. When withdrawal is needed, these segments are simply collapsed before pulling, reducing soil engagement in advance. This preliminary configuration allows the device to maintain strong anchorage during use while enabling easy withdrawal when needed, as the transition to a low-engagement state is already prepared and requires minimal additional action.
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 device provides secure anchorage in wet soils and sands by chemically reacting with the substance, enhancing resistance and allowing easy insertion and removal, while reducing material requirements.
Implementation Method 1
the open cup shaped containers' material may, if desired, chemically react with the substance
Data Source
AI summary
A pole with an eyelet disposed at one end and the first and second group of furled cup shaped furled containers are connected along the longitudinal length of the pole. The pole with the containers is inserted into a substance. The substance may, if desired, be sand, mud or mud-like soil. If desired, the insertion process may be accomplished by forcing the pole into the substance by applying downward force on the eyelet or twisting the pole in a clockwise direction into the substance. Once the pole is inserted into the substance the pole may, if desired, be twisted in the counterclockwise direction to unfurl the cup shaped containers. To extract the pole, the pole is twisted in the clockwise direction closing the cup shaped containers and pulling the pole in the vertical direction.