Absorbing Surface Shaping Steel Pile Head to Reduce Noise
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Solution Overview
Problem
Impact pile driving devices generate excessive noise during steel pile driving, limiting their use in residential areas due to noise levels exceeding 100 decibels, and existing noise suppression solutions are either ineffective or complicate the pile driving process.
Innovation Solution
A supporting arrangement for steel piles in impact pile driving devices, where the absorbing surface of the cushion element is shaped to match the pile's end, preventing crosswise vibration and noise by shaping the pile's wall against the absorbing surface during impact, thereby reducing noise emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If impact pile driving is used to drive steel piles into the ground, then the foundation strength is improved, but the noise level exceeds 100 decibels which is harmful to the environment and operators
Solution Approach 1:
The invention converts the harmful impact force that causes noise into a beneficial shaping action. The cushion element is designed to shape the pile head and wall during impact, converting the harmful vibration and noise into useful plastic deformation that strengthens the pile head and improves soil-pile contact
Solution Approach 2:
The invention changes the physical state and shape of the pile head through controlled plastic deformation during impact driving. The cushion element applies controlled pressure to reshape the pile head geometry, transforming the rigid impact into a shaping process that reduces noise while maintaining foundation strength
2Strength
If conventional cushioning is used to protect the pile head, then the pile head is protected from damage, but the noise reduction effect is limited and the cushioning material wears out quickly
Solution Approach 1:
The cushion element is designed to undergo controlled plastic deformation during impact, changing its shape to better conform to the pile head. This parameter change allows the cushion to maintain its protective function while improving noise reduction through better contact and energy absorption
Solution Approach 2:
The cushion element shapes itself during the impact process. The repeated impacts cause the cushion material to automatically conform to the pile head geometry, creating a custom-fit cushioning surface without external intervention, which improves both protection and noise reduction
3Object-affected harmful factors
If noise reducing devices are installed around the pile, then noise is suppressed, but the pile becomes invisible and the driving operation cannot be followed visually, and the process becomes slower and more complicated
Solution Approach 1:
The invention merges the noise reduction function with the existing cushion element that is already part of the pile driving device. By integrating noise suppression into the cushion element itself, the solution eliminates the need for separate noise reducing devices around the pile, maintaining visual accessibility and operational simplicity
Solution Approach 2:
The cushion element is designed to perform multiple functions simultaneously: protecting the pile head from damage, shaping the pile head and wall, and reducing noise emission. This multi-functionality eliminates the need for additional specialized noise reducing devices, simplifying the overall system
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
The solution significantly reduces noise levels by up to 18 dB, making impact pile driving more feasible in noise-sensitive areas without complicating the pile driving process.
Implementation Method 1
the block, hits a pile cap placed on top of the pile, which will transfer the impact to the pile to be driven into the ground
Implementation Method 2
This sudden deformation will emit pronounced pressure variation, i.e. noise, to the environment
Implementation Method 3
the absorbing surface in the supporting surface abutting the steel pile is implemented so that by the effect of the impact driving of the pile it shapes the end of the wall of the pile
Data Source
AI summary
The invention relates to an arrangement for supporting a thin-walled steel pile (5; 17; 26; 35) in an impact pile driving device, the arrangement comprising a supporting surface (4; 14; 23; 31), to which the steel pile (5; 17; 26; 35) can be supported, and in which arrangement the supporting surface (4; 14; 23; 31) is provided with one or more absorbing surfaces (6; 16; 25; 33) to be placed against the end of the wall (8; 18, 26; 36) of the steel pile (5; 17; 26; 35). In the arrangement according to the invention, the absorbing surface (6; 16; 25; 33) is configured to shape the end of the wall (8; 18; 27; 36) of the steel pile (5; 17, 26; 35) coming against the absorbing surface (6; 16; 25; 33), by the effect of the impact driving of the steel pile (5; 17; 26; 35), so that at least the part of the wall (8; 18; 27; 36) at the absorbing surface (6; 16; 25; 33) of the wall (8; 18; 27; 36) is shaped against the absorbing surface (6; 16; 25; 33), wherein the movement of the wall (8; 18; 27; 36) in the direction of a plane transverse to the direction of impact driving of the steel pile is prevented, at least at the head of the steel pile (5; 17; 26; 35). Also, the absorbing surface (6; 16; 25; 33) in the supporting surface (4, 14; 23; 31) can be configured to be shaped by the effect of the impact driving of the steel pile (5; 17, 26, 35) so that the absorbing surface (6; 16; 25; 33) is shaped against the part of the wall (8; 18, 27; 36) of the steel pile (5; 17; 26; 35) at the absorbing surface (6; 16; 25; 33), whereby the movement of the wall (8; 18; 27; 36) at the head of the steel pile (5; 17; 26; 35) is prevented. The invention also relates to a method for arranging the support of a steel pile (5; 17; 26; 35) in an impact pile driving device.