Geotextile Tube with Segmented Transverse Threads for Soil Stabilization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for stabilizing subsoil using geotextile tubes require significant effort and resources, and there is a need to achieve the same or greater load-bearing capacity with reduced effort.
Innovation Solution
A geotextile tube with longitudinal high-strength, low-elastic threads and additional transverse threads of reduced strength, which are highly elastic, allowing for a smaller initial diameter and reduced insertion effort, and enabling significant expansion during filling to increase the column's diameter and pressure on the soil.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional geotextile tubes with high-strength transverse threads are used, then the tube maintains sufficient tensile force reserve for long-term load-bearing effect, but the insertion effort and required casing pipe diameter remain large
Solution Approach 1:
The transverse threads are segmented into two distinct types: highly elastic threads with reduced strength for insertion phase, and high-strength threads with low elasticity for load-bearing phase. This segmentation allows each thread type to perform its specific function optimally without compromising the other requirement.
Solution Approach 2:
The geotextile tube transitions from a dynamic state during insertion (where highly elastic threads allow significant diameter reduction) to a static load-bearing state (where high-strength threads maintain structural integrity). The tube's mechanical properties dynamically adapt to different operational phases through the dual-thread construction.
2Ease of operation
If the casing pipe diameter is reduced to decrease insertion effort, then the insertion process becomes easier, but the tube cannot expand sufficiently to exert adequate pressure on the filling material
Solution Approach 1:
The elastic properties of the transverse threads are changed to enable significant diameter expansion during the filling process. The highly elastic threads allow the tube to expand by stretching, transforming the tube's dimensional parameters from a compact insertion state to an expanded load-bearing state, thereby exerting adequate pressure on the filling material despite initial small diameter.
3Ease of operation
If highly elastic transverse threads with reduced strength are added, then the tube can be inserted with smaller diameter casing pipe, but the tube structure becomes more complex
Solution Approach 1:
Two different thread types with different properties are merged into a single geotextile tube structure. The highly elastic threads and high-strength threads are combined in the same fabric, allowing the tube to simultaneously achieve ease of insertion and long-term load-bearing capacity without requiring separate components or complex assembly mechanisms.
4Reliability
If the transverse threads are stretched to achieve tube expansion during filling, then the column diameter increases and stabilizes the soil better, but the tensile force on the geotextile sleeve increases
Solution Approach 1:
Different regions of the tube structure have different local qualities: highly elastic threads with reduced strength are positioned to handle expansion stresses during insertion and filling, while high-strength threads with low elasticity are positioned to bear the long-term tensile loads. This local differentiation of material properties allows the tube to expand sufficiently for stabilization while distributing tensile forces appropriately.
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 solution reduces the effort required for installation, allows for greater expansion of the column, enhancing the structural integrity and load-bearing capacity of the stabilized soil with less tensile force on the geotextile sleeve, while maintaining long-term stability.
Implementation Method 1
The transverse threads of reduced strength can be highly elastic and can be introduced into the structure of the tube under tension, for example. After the production of the textile material, these highly elastic transverse threads relax, so that the hose essentially has a circumference that corresponds to the length of the relaxed transverse threads with reduced strength. The highly elastic transverse threads can, for example, be stretchable by at least 50 percent of their length.
Implementation Method 2
When the casing pipe is pulled, the filling material is compressed and the hose expands. The threads of the tubular casing running transversely, i.e. in the circumferential direction of the hose, are stretched to such an extent that the tension achieved exerts a radially inward pressure on the filling material and stabilizes it
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The invention relates to a tube (14) for stabilizing a building site, consisting of geotextile material (10) with longitudinal threads (11) extending substantially in the axial direction of the tube (14) and transverse threads (12) extending substantially in the circumferential direction of the tube (14), wherein the longitudinal threads (11) and transverse threads (12) are formed of high-strength, low-elastic threads, and wherein the tube (14) has additional transverse threads (13) with reduced strength which are shorter in the relaxed state than the high-strength, low-elastic transverse threads (12).