Sonic Anchor Pile Installation for Deep Ground Anchorage
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Solution Overview
Problem
Existing methods for anchoring objects to the ground using anchor piles are laborious, time-consuming, and require significant power, often failing to reach desired depths due to high resistance, and result in anchor piles with insufficient tension strength.
Innovation Solution
A method involving a sonic drill apparatus to insert a head section and rod sections into the ground with simultaneous sonic vibration, allowing direct drilling without a retrievable drill string, and injecting a curable substance to form a compacted mixture around the head section, enhancing tension strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional drilling methods are used to insert anchor piles, then the anchor piles can be inserted into the ground, but the process is laborious, time-consuming, and requires significant power
Solution Approach 1:
The patent applies sonic vibration to the anchor pile during insertion to reduce friction and resistance between the pile and ground particles. This vibration mechanism enables faster penetration depth achievement compared to traditional static drilling methods, directly resolving the contradiction between insertion speed and drilling time.
Solution Approach 2:
The patent changes the physical state of the ground particles through sonic vibration, transforming them from a static resistant state to a more compliant state that allows easier penetration. This parameter change in the ground's physical properties enables rapid insertion without requiring excessive time or power.
2Length of stationary object
If traditional drilling methods are used to reach deep depths, then the anchor piles can be inserted to desired depths, but the resistance becomes too high and great power is required
Solution Approach 1:
Sonic vibration is applied continuously during deep insertion to maintain reduced friction and resistance at the pile-ground interface. This vibration mechanism distributes the mechanical stress and prevents excessive resistance accumulation, enabling deep penetration without requiring proportional increases in drilling power.
3Ease of manufacture
If traditional methods with retrievable drill strings are used, then the ground particles can be flushed away, but the process requires pressurized flushing liquids and is complex
Solution Approach 1:
The patent extracts and eliminates the complex retrievable drill string system and pressurized flushing liquid mechanism from the process. By using sonic vibration directly on the anchor pile, the method achieves ground particle removal and mixing without requiring these additional complex components, thereby simplifying the overall manufacturing and operational process.
Solution Approach 2:
The anchor pile itself, through sonic vibration, performs the function of flushing and mixing ground particles without requiring external flushing liquids or complex drill string systems. The vibration mechanism enables the pile to self-clean and self-mix the grout with ground particles during insertion.
4Reliability
If large volumes of grout are used to fill the hole, then the anchor pile can be formed, but the time and material consumption increase
Solution Approach 1:
Sonic vibration changes the physical state and distribution characteristics of the grout and ground particles during mixing. This vibration-induced parameter change enables more efficient mixing and compacting, reducing the total grout volume needed while ensuring complete and reliable anchor pile formation.
Solution Approach 2:
Continuous sonic vibration during grout injection and mixing prevents grout settling and ensures uniform distribution with ground particles. This vibration mechanism achieves complete hole filling and reliable anchor formation with reduced grout volumes compared to static injection methods.
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
Significantly reduces time and labor, eliminates the need for pressurized flushing liquids and large grout volumes, and achieves anchor piles with higher tension strength, enabling quicker and more efficient insertion to desired depths.
Implementation Method 1
A method involving a sonic drill apparatus to insert a head section and rod sections into the ground with simultaneous sonic vibration
Implementation Method 2
injecting a curable substance to form a compacted mixture around the head section, enhancing tension strength
Data Source
Figure 1a
Figure 1b
Figure 1c
AI summary
A method for anchoring/founding an object (15) comprises the steps of positioning a sonic drill apparatus (1), providing an assembly of head and rod sections (6; 20), in which the rod sections are connectable to the head section and to each other while extending in the longitudinal direction for forming a pile,inserting the pile into the ground, and coupling the object to a proximal end of the connected sections of the pile. The head section comprises a drilling portion. The head section is drilled directly into the ground by means of the sonic drill apparatus, and repeatedly gets one of the rod sections connected thereto, after which the connected sections get drilled further into the ground. During at least part of this drilling, a sonic vibration is introduced into the connected sections.