Four-Pile Bridge Assembly for Silent Seabed Installation
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Solution Overview
Problem
Existing technologies for driving piles into the ground or seabed generate excessive noise, damage electronic equipment, and require costly, specially designed piles, while lacking a viable silent and accurate method for installing multiple piles without external support structures.
Innovation Solution
A device comprising a bridge assembly with four actuators and pile connectors that alternately control forces to push or pull piles into a square or diamond configuration, distributing load as tension and bending moments, allowing regular tubular piles to be installed silently and accurately without external support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If hydraulic impact hammers are used to drive piles into the seabed, then piles can be installed effectively, but excessive noise is generated that harms marine mammals and exceeds regulatory limits
Solution Approach 1:
The invention extracts the harmful impact action from the pile driving process by removing the hydraulic impact hammer entirely. Instead of hammering, the system uses a pressing device that applies gradual compressive force through hydraulic cylinders to push piles into the seabed, eliminating the noise-generating impact while maintaining installation effectiveness
Solution Approach 2:
The invention replaces the mechanical impact system (hydraulic hammer) with a hydraulic pressing system. The pressing device uses hydraulic cylinders to generate controlled compressive forces that gradually advance the piles into the seabed, substituting the noisy impact mechanism with a silent pressing mechanism
2Productivity
If hydraulic impact hammers are used to drive piles, then piles can be installed, but shockwaves damage electronic equipment used to measure position and orientation
Solution Approach 1:
The invention removes the source of shockwaves by eliminating the impact hammer from the system. The pressing device applies gradual, controlled force without generating the intense shockwaves that damage electronic measurement equipment, allowing sensors to remain functional throughout the installation process
Solution Approach 2:
The pressing device operates through controlled, periodic extension and retraction of hydraulic cylinders, applying force in manageable increments rather than through sudden impact. This periodic action allows electronic equipment to adapt and function without damage from excessive shockloads
3Object-affected harmful factors
If bubble curtains are deployed to reduce noise levels, then noise can be mitigated, but many compressors are required which increases cost and carbon footprint
Solution Approach 1:
The invention converts the harmful impact action into a beneficial silent pressing action. By fundamentally changing the installation mechanism from impact to pressing, the system eliminates the need for noise mitigation measures like bubble curtains and their associated compressors, turning a noise problem into a silent solution
Solution Approach 2:
The invention extracts the entire noise mitigation infrastructure (bubble curtains, compressors, auxiliary vessels) from the system by eliminating the source of noise at its origin. The pressing device achieves silent operation inherently, making all noise reduction equipment unnecessary
4Object-affected harmful factors
If multiple piles are installed in a row using push-in systems, then silent installation is achieved, but the distance between outermost pile and structure becomes too large for offshore applications
Solution Approach 1:
The invention transitions from linear row installation to two-dimensional square or diamond pattern installation. The pressing device can position and install piles in multiple directions simultaneously, enabling compact geometric arrangements that maintain close proximity to the structure while preserving silent installation benefits
5Object-affected harmful factors
If four interlocked sheet piles are driven using the Dawson system, then silent installation of multiple piles is achieved, but specially designed interlocked piles are required which are costly
Solution Approach 1:
The pressing device is designed with universal applicability to work with regular tubular piles without requiring special interlocking features. The system can install various pile types including standard steel tubes, concrete piles, and wooden piles, eliminating the need for costly specially-designed interlocked piles while maintaining silent installation
Solution Approach 2:
The invention uses conventional, readily available pile materials without requiring expensive specialized designs. Regular tubular piles that are already in use can be installed with the pressing device, eliminating the need to invest in costly custom-engineered interlocked piles
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
Enables silent installation of regular tubular piles with improved measurement capabilities and reduced risk of equipment damage, eliminating the need for external support structures and reducing noise pollution.
Implementation Method 1
an actuator which extends downward from the respective connecting location, wherein each actuator comprises an upper actuator part and a lower actuator part
Implementation Method 2
said push force is transferred at least partially from the bridge assembly as a respective tension force or a compression force, and a bending moment into the two adjoining piles
Data Source
Figure 1
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AI summary
The present invention relates to a device for pushing four piles into the ground or into a seabed in a square configuration or in a diamond configuration, the device comprising: - a bridge assembly which defines a first, second, third and fourth connecting location arranged in a square or diamond configuration, - four connection assemblies via which in use each of the four piles is connected to the bridge assembly, wherein each pile connection assembly comprises: o an actuator comprising an upper actuator part and a lower actuator part, wherein the actuator is configured to extend, o a pile connector connected to the lower actuator part, o a control device configured for alternately letting each of the actuators extend, and configured for letting the pile which is pushed into the ground or seabed receive a greater force than the opposite pile of the square or diamond configuration, wherein the exerted push force is transferred into the bridge assembly and transferred at least partially from the bridge assembly as a tension force and a bending moment into the two adjoining piles via the two adjoining pile connection assemblies.