Drum-Form Civil Fiber Tube Structure With Stable Lower Coupling
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Solution Overview
Problem
The existing civil engineering fiber tube structures face issues with joint separation due to pressure from inside and outside forces, particularly at the lower portions where sewing threads are easily damaged by the expansion of dredged soil and weight, leading to instability in the coupling of unit tube members.
Innovation Solution
A civil engineering fiber tube structure with a flexible rectangular shape, rolled into a drum form, featuring a lower coupling portion at the center, bending margin portions, and additional reinforcing members, along with assistant coupling members and transverse reinforcing elements, to enhance stability and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If unit tube members are coupled by sewing threads in the longitudinal direction, then the structure can be assembled, but the joints frequently open under pressure from inside and outside forces
Solution Approach 1:
The patent changes the coupling mechanism from sewing threads to a mechanical interlocking system using coupling members with insertion holes and insertion portions. This parameter change in the coupling method transforms the connection from a flexible stitched joint to a rigid mechanical joint that resists opening under pressure differential forces.
Solution Approach 2:
The patent introduces coupling members as intermediary elements between unit tube members. These coupling members act as mediators that mechanically interlock with insertion holes and insertion portions, providing a stable connection that prevents joint opening while maintaining assembly capability.
2Ease of manufacture
If sewing threads are used to couple unit tube members, then the structure can be assembled, but the sewing threads are easily damaged by expansion of dredged soil and their own weights
Solution Approach 1:
The patent changes the material and structural parameters of the coupling system from textile sewing threads to mechanical coupling members made of durable materials. This parameter change eliminates the weakness of sewing threads against soil expansion forces and self-weight while preserving the ability to assemble unit tube members.
Solution Approach 2:
The coupling members serve as intermediary elements that replace the vulnerable sewing threads. These mechanical intermediaries distribute and resist the damaging forces from soil expansion and self-weight, protecting the overall structure while maintaining assembly functionality.
3Reliability
If the lower coupling portion is positioned at the lower center, then the structure achieves stable coupling under pressure, but the structure becomes more complex
Solution Approach 1:
The patent applies local quality by positioning the lower coupling portion specifically at the lower center where it contacts the ground. This localized structural feature provides enhanced stability at the critical load-bearing point without requiring complex modifications throughout the entire structure, thus achieving reliability without excessive complexity.
Data Source
AI summary
The present disclosure provides a civil engineering civil fiber tube structure that includes: a tube body part made of a flexible civil fiber material, initially having a rectangular shape, and is rolled in a drum shape such that a lower coupling portion is formed at a lower center portion by coupling both ends in a longitudinal direction; and one or more injection taps disposed on a top in the longitudinal direction of the tube body part when the lower coupling portion is disposed at a lower center.