Vibrator Device Axial Load Assessment for Offshore Piles
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing methods for determining the axial load capacity of piles, especially in offshore wind farms, require the use of a ram hammer, which increases installation effort and costs, particularly when using a vibrator device.
Innovation Solution
A procedure that utilizes a vibrator device to apply a measuring impulse sequence to the pile, allowing for the assessment of the axial load capacity by recording and evaluating the movement data generated during the vibration period.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a pile driver is used to apply driving impulse during dynamic loading tests, then the axial load-bearing capacity can be determined, but the installation effort and device complexity increase
Solution Approach 1:
The vibrator device is designed to perform multiple functions: it can both install the pile into the ground and conduct dynamic loading tests to determine axial load-bearing capacity. By integrating the testing capability into the installation equipment, the patent eliminates the need for separate pile driver equipment, thereby reducing device complexity while maintaining measurement precision for load-bearing capacity determination
Solution Approach 2:
The patent combines the pile installation function and the dynamic loading test function into a single integrated system. The vibrator device that installs the pile is also used to apply the driving impulse for testing, merging two previously separate operations into one unified process, which reduces the number of equipment pieces and simplifies the overall installation procedure
2Measurement precision
If a pile driver is used to apply driving impulse during dynamic loading tests, then the axial load-bearing capacity can be determined, but the installation effort increases
Solution Approach 1:
The vibrator device performs dual functions of pile installation and dynamic loading testing, eliminating the need for separate pile driver operations. This multi-functionality reduces the total installation effort and time required, as the same equipment and team handle both installation and testing without requiring additional equipment setup or removal
Solution Approach 2:
By merging the installation and testing operations into a single integrated process using the vibrator device, the patent reduces the overall installation effort. The equipment remains in place throughout, and the transition from installation to testing is seamless, improving productivity by eliminating redundant equipment handling and setup procedures
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 approach reduces the installation effort and costs by eliminating the need for a ram hammer, while providing an effective method to evaluate the axial load capacity of piles, ensuring sufficient bearing capacity for offshore structures.
Implementation Method 1
Applying a measuring pulse sequence to the inserted pile by a vibrator device arranged on the inserted pile during at least one vibration period
Implementation Method 2
The generated impact pulse subsequently propagates as an impulse wave or strain wave from the pile head to the pile toe of the installed pile. The generated impulse wave is reflected at the pile toe and travels back to the pile head
Implementation Method 3
The pulse sequences transmitted to the pile lead to liquefaction of the subsurface soil, thus driving the pile into the subsurface
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The application relates to a method for determining the load-bearing capacity of an installed pole (102, 202) comprising: subjecting the installed pole (102, 202) to a measuring pulse sequence during at least one vibration period by means of a vibration device (220, 520) arranged on the installed pole (102, 202); detecting movement data of the installed pole (102, 202) caused by the measuring pulse sequence during a measurement period by means of at least one detection module (244); determining at least one downward movement data set from the detected movement data; and evaluating the downward movement data set in such a way that a load-bearing capacity criterion is determined.