In Situ Flexible Fence With Stiffening Elements
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Solution Overview
Problem
Existing in situ fence solutions face challenges such as high labor and time requirements, insufficient resistance, bulky and heavy prefabricated cement barriers, and inefficient transportation, making them costly and difficult to install on varying terrains.
Innovation Solution
A flexible containment body made from geotextile material with integrated stiffening elements, allowing for easy transportation, rapid deployment, and filling with cement to form a rigid barrier, which can be adapted to different terrains without heavy machinery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If hollow tubular posts are transported to the area and inserted into holes made in the ground, then the fence can be assembled in situ, but the process requires considerable labor and time to build shuttering and make holes
Solution Approach 1:
The invention extracts and removes the shuttering component from the fence assembly process. Instead of building complex shuttering structures in situ to form cement posts, the patent uses pre-formed hollow tubular posts that are directly inserted into ground holes, eliminating the time-consuming shuttering construction step while maintaining the in situ assembly advantage
Solution Approach 2:
The fence system is segmented into separate functional components: pre-fabricated hollow tubular posts, mesh panels, and connection elements. This segmentation allows the posts to be manufactured separately with controlled quality, transported efficiently, and assembled in situ without requiring complex on-site construction processes
2Ease of manufacture
If posts are made from cement with shuttering, then the fence can be constructed in situ, but the posts do not form a sufficiently resistant barrier and can be easily violated
Solution Approach 1:
The invention employs composite construction by filling the hollow tubular cement posts with steel rebar cages and concrete, creating a reinforced composite structure. This combination of cement, steel reinforcement, and hollow tubular geometry produces posts with significantly enhanced strength and resistance to breaking or cutting, while maintaining the in situ construction advantage
Solution Approach 2:
The hollow tubular posts utilize a curved cylindrical geometry rather than flat or angular shapes. This tubular form provides superior structural strength and resistance to impact and cutting forces compared to flat cement panels, while still allowing for in situ assembly through direct ground insertion
3Productivity
If prefabricated cement barriers are transported in situ, then the fence can be assembled quickly, but the barriers are very heavy and bulky requiring high transport and installation costs
Solution Approach 1:
The fence system is divided into modular hollow tubular posts that can be manufactured at optimal sizes for transport. These segmented modules are lighter and more manageable than large prefabricated cement barriers, reducing transport costs and equipment requirements while maintaining quick assembly through standardized insertion and connection processes
Solution Approach 2:
The hollow tubular posts utilize a thin-walled cylindrical shell structure that provides high strength-to-weight ratio. This thin-shell geometry allows the posts to be lightweight enough for cost-effective transport and manual or light-machinery handling, while the hollow tubular form maintains structural integrity and resistance during assembly and service
4Ease of manufacture
If hollow containment bodies made from rigid material are transported and filled with cement, then the barrier can be formed in situ, but the bodies are particularly bulky during transportation and require long time to form the row
Solution Approach 1:
The invention employs dynamic adaptability in the hollow tubular posts through features such as flexible connection mechanisms and adjustable positioning elements. This allows the posts to adapt to varying ground conditions and fence line requirements during assembly, eliminating the need for bulky rigid containment bodies while maintaining in situ formation capability
Data Source
Figure 1
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AI summary
A fence able to be made in situ comprising a flexible containment body (2) bearing a plurality of stiffening elements (4) mechanically associated at regular distances. The containment body is deformable between a transportation configuration (A), in which it is compacted through folds, and a configuration of application (B), in which it is opened out along the direction of longitudinal extension with the stiffening elements that support it arranging a base portion resting on the ground. A plurality of support posts (10) for a mesh (11) can be inserted in seats (9) formed in the stiffening elements.