Underwater Concrete Block Positioning Guide Member
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Solution Overview
Problem
Existing methods for constructing underwater concrete block structures face challenges in accurately positioning blocks due to limited visibility and difficulty in communicating precise positional information, leading to inefficiencies and inaccuracies in placement.
Innovation Solution
A method involving concrete blocks with vertical guide holes and a guide member comprising installation guide poles and a horizontal spacer, allowing for accurate alignment and placement using a guide pole that fits into the block's guide holes, with a cap and insertion guide part for precise positioning and lifting, and a crane connecting cable for efficient handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a diver informs a crane operator of the accurate position of the underwater block from the water, then the block can be positioned accurately, but it is difficult for the diver to recognize the accurate position due to lack of visibility in the water
Solution Approach 1:
The patent introduces guide members (guide poles with guide bodies) as intermediaries between the blocks and the positioning system. These guide members provide physical reference markers that can be seen above water, serving as mediators that translate underwater block positions into visible above-water references for the crane operator, eliminating the need for diver intervention.
Solution Approach 2:
The patent replaces the human diver-mechanical communication system with an automated mechanical guidance system. The guide members with stopping steps and insertion guide parts provide automatic mechanical positioning feedback to the crane operator, substituting the ineffective visual communication method used by divers.
2Strength
If huge caissons are used to construct the underwater structure, then the structure can withstand large waves, but the construction cost is high and construction in shallow water is impossible
Solution Approach 1:
The patent divides the underwater structure into multiple separate concrete blocks that can be constructed independently on land and then assembled underwater using the guide member system. This segmentation allows each block to be manufactured with controlled quality while enabling construction in shallow water and reducing overall construction complexity and cost.
Solution Approach 2:
The patent performs preliminary actions by pre-installing guide members in blocks that are manufactured on land before they are transported and assembled underwater. This preliminary preparation ensures accurate positioning during assembly while maintaining structural integrity to withstand wave forces.
3Manufacturing precision
If the insertion guide part has a constant cross-sectional area, then the structure is simpler, but the guide member cannot be accurately positioned in the vertical direction
Solution Approach 1:
The patent applies local quality by varying the cross-sectional area of the insertion guide part at different locations along its length. The upper portion has a larger cross-sectional area for easy insertion, while the lower portion has a smaller cross-sectional area that corresponds to the guide hole diameter, creating a tapered shape that ensures accurate vertical positioning when the member is inserted into the block.
Data Source
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AI summary
The present invention relates to a concrete block construction method and a guide member for installing the concrete block, in which the concrete block can be placed at an accurate position considering positions of a lower concrete block and a concrete block positioned at a side during installing the concrete block. Therefore, construction of the concrete block according to the present invention can be accurate and a construction speed thereof can be drastically increased.