Pile with low noise generation during driving
US9068317B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2012 |
| Grant date | Jun 30, 2015 |
| Priority date | — |
| Expiry date | Nov 2, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02D13/005
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A pile (300) with a effective low Poisson's ratio is disclosed, which greatly reduces the sound coupling to the water and sediment or other ground when driving piles. The pile includes a plurality of geometric features that reduce the radial amplitude of the compression wave generated by hammering the pile by providing a space for circumferential expansion along the length of the pile. In various embodiments, the geometric features comprise slots (303) and/or grooves (313, 323). In an embodiment, a driving shoe (316, 316) has a perimeter that extends beyond the pile tube such that the sediment produces less of a binding force on the pile. The pile may be formed as a double-shelled pile (310) with either or both shells having effective low Poisson's ratio properties. A bubble generating plenum (328) may be attached to the shoe to further reduce friction during installation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.