Reusable Guide Assembly for Perpendicular Casing Insertion
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Solution Overview
Problem
Conventional methods for forming continuous-pile type sheathing walls in the ground face challenges in achieving precise perpendicular insertion of casings, leading to gaps and compromised water blocking capabilities, while existing guide structures are non-reusable and inefficient.
Innovation Solution
A guide assembly comprising first and second guide-bodies with concave-rounded vertically-extended portions, coupling units, and anchoring-bar guide channels, allowing secure and precise alignment of casings to prevent gaps and enable reusable construction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional CIP method is used to form continuous-pile type sheathing wall, then construction can be performed, but gaps are generated between piles due to improper orientation, deteriorating water blocking function
Solution Approach 1:
The patent introduces a guide structure as an intermediary device between the casing insertion process and the ground. This guide structure includes a guide hole that precisely guides the casing to be inserted exactly perpendicular to the ground surface, eliminating the orientation errors that cause gaps between piles. The guide structure acts as a mediator that ensures precise positioning without requiring complex adjustment operations during the insertion process.
2Manufacturing precision
If guide structure is formed directly on site for each region, then casing can be vertically inserted, but construction efficiency deteriorates due to individual fabrication and curing time requirements
Solution Approach 1:
The guide structure is segmented into modular components that can be pre-fabricated off-site and then assembled at the construction location. This segmentation allows multiple guide structures to be prepared simultaneously in different locations, eliminating the need for sequential on-site fabrication and curing. The modular design maintains precise dimensional accuracy while significantly improving construction efficiency through parallel preparation of multiple guide elements.
Solution Approach 2:
The guide structures are pre-fabricated off-site before the actual casing insertion work begins. This preliminary action allows for controlled manufacturing conditions that ensure high precision, and the guide structures are ready for immediate use when needed at the construction site, eliminating the time-consuming on-site fabrication and curing processes that previously reduced productivity.
3Manufacturing precision
If guide structure is used for casing insertion, then perpendicular insertion is achieved, but guide structure must be removed after construction, resulting in resource waste
Solution Approach 1:
The guide structure is designed to be reusable rather than disposable. After guiding the casing insertion at one location, the same guide structure can be disassembled, transported, and reinstalled at subsequent locations along the trench. This recovering and reuse approach eliminates the need to fabricate new guide structures for each region, reducing material waste while maintaining precise casing insertion throughout the entire construction process.
Data Source
AI summary
There is provided a guide assembly for guiding a cylindrical casing used in forming a sheathing wall in a ground. The guide assembly includes: a first guide-body having first inner and outer vertical faces and first top and bottom horizontal faces extending in a length-direction thereof; a second guide-body having second inner and outer vertical faces and top and bottom horizontal faces extending in a length-direction thereof, wherein the second inner face faces away the first inner face; at least one first coupling unit configured to couple the first and second guide-bodies to each other at the first and second top faces thereof; and at least one second coupling unit configured to couple the first and second guide-bodies to each other at lower positions of the first and second inner faces thereof.