Stacked Concrete Unit-Wall Structures for Liquefied Gas Tank Construction
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Solution Overview
Problem
Conventional methods for constructing liquefied gas storage tanks on land are time-consuming due to the repetitive process of concrete casting for each wall segment, leading to prolonged construction times and increased costs.
Innovation Solution
The method involves producing pre-made concrete unit-wall structures with iron rods and grooves, allowing for rapid stacking and connection using positioning blocks and iron rod connecting plates, followed by concrete casting to integrate the structures and form a cylindrical wall, thereby reducing construction time and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional concrete casting method is used to construct the cylindrical tank body, then the tank can be constructed with continuous concrete structure, but the construction time is significantly prolonged due to repetitive pouring and hardening processes
Solution Approach 1:
The patent applies preliminary action by pre-casting concrete wall segments in a factory setting before construction. The wall segments are manufactured in advance with embedded iron rods and grooves, then transported to the construction site for rapid assembly. This eliminates the time-consuming on-site concrete pouring and hardening processes, directly resolving the contradiction between construction speed and construction time.
Solution Approach 2:
The patent divides the cylindrical tank body into multiple pre-casted wall segments that can be independently manufactured and then assembled. Each segment is a separate modular unit with standardized dimensions, allowing parallel production and rapid on-site assembly. This segmentation approach dramatically increases productivity while reducing total construction time compared to traditional monolithic concrete casting.
2Loss of time
If pre-produced unit-wall structures are stacked and connected, then construction time is reduced, but additional components such as positioning blocks and connecting plates are required
Solution Approach 1:
The patent merges the connection function into the wall segments themselves by embedding iron rods and grooves during pre-casting. The positioning blocks and connecting plates are integrated components that combine multiple functions (positioning, alignment, and structural connection) into single elements. This reduces the need for separate auxiliary components and simplifies the overall construction system despite the modular approach.
Solution Approach 2:
The patent uses positioning blocks as intermediary components that facilitate the connection between wall segments. These blocks are inserted into grooves to provide precise positioning and alignment during assembly, acting as mediators that enable rapid connection without complex adjustment procedures. The intermediary components standardize the connection process and reduce overall system complexity.
Data Source
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AI summary
The present disclosure relates to a method of constructing a liquefied gas storage tank on land, which enables rapid and easy construction of walls of a cylindrical storage tank by stacking a plurality of pre-produced unit-wall structures (10) to overlap one another. The method includes: producing unit-wall structures (10) made of concrete and each having iron rods (11) arranged lengthwise and breadthwise therein, stacking the unit-wall structures (10) in a cylindrical arrangement, and connecting the unit-wall structures (10) adjacent in vertical and lateral directions to each other to form a wall of the storage tank.