Umbrella Anchorage Composite Structure for Soil Stripping
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Solution Overview
Problem
Current anchorage systems in civil engineering, particularly for deep foundation and underground structures, face issues with insufficient load-bearing capacity and anchorage stripping due to variations in soil conditions, leading to structural collapses and safety concerns.
Innovation Solution
The Umbrella Anchorage system employs a composite structure formed between anchorage vanes and concrete grouting, featuring a steel anchorage body, cutter vanes, and a grouting system to enhance load transfer and prevent stripping, using a cylindrical anchorage body with cutter vanes and a grouting system to create a stable composite structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the length of the root zone is increased to achieve adequate friction force, then the friction force is improved, but the anchorage becomes more susceptible to stripping due to variation in soil conditions
Solution Approach 1:
The patent applies composite materials by combining steel anchorage bars with concrete grouting to form a composite structure. This composite construction increases the load-bearing capacity and prevents anchorage stripping by creating a unified structure that distributes stresses more effectively than the steel bar alone, directly addressing the reliability issue while maintaining adequate friction force.
2Ease of manufacture
If standard anchorage elements are used with insufficient load-bearing capacity, then the installation process is simpler, but structural collapses occur due to inadequate capacity
Solution Approach 1:
The patent employs composite materials by combining steel anchorage bars with concrete grouting to form a composite structure. This composite construction increases the load-bearing capacity while maintaining a relatively simple installation process, as the components are installed separately and then bonded together through grouting, resolving the contradiction between ease of manufacture and strength.
Solution Approach 2:
The patent merges the steel anchorage bar and concrete grouting into a unified composite structure. This combining of materials creates a system with enhanced load-bearing capacity that is greater than the sum of its individual components, addressing the strength requirement while keeping the overall system relatively simple to install.
3Manufacturing precision
If the anchorage bar is rotated at the time of placing to achieve proper positioning, then the positioning accuracy is improved, but the installation time and complexity increase
Solution Approach 1:
The patent applies preliminary action by pre-rotating the anchorage bar to the correct orientation before insertion into the ground. This preliminary positioning action ensures that the bar is correctly oriented before grouting takes place, achieving proper positioning accuracy while actually reducing total installation time by avoiding the need for rotation after grouting has set.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution significantly increases the load-bearing capacity, reduces the risk of anchorage stripping, and ensures safer retaining structures by forming a high-strength composite structure, thereby preventing collapses and enhancing work efficiency and financial savings.
Implementation Method 1
The system proposed at the Umbrella Anchorage method shall prevent wearing and stripping of the anchorage by virtue of the high strength of the composite structure formed between the anchorage vanes and concrete grouting
Implementation Method 2
The grouting system (1.3.2) allows formation of a composite structure between the cutter vanes (1.2.1) and the cement slurry by performing cement-water grouting to the hole
Data Source
AI summary
The invention is an application that completely alter the operating principle and load transfer mechanism of the anchorage technique used in the field of civil engineering, in particular at the excavation bracing and slope stability applications with a novel root zone apparatus.