Hydraulic and earth engineering – Marine structure or fabrication thereof – Structure protection
Patent
1997-09-11
1999-07-27
Graysay, Tamara L.
Hydraulic and earth engineering
Marine structure or fabrication thereof
Structure protection
405211, 114219, E02B 328
Patent
active
059279036
ABSTRACT:
A first aspect of the present invention is an energy dissipating dolphin including a plurality of elongate piles in a body of water extending substantially vertically from a bed underlying the body of water. Each pile has a proximal end driven sufficiently deep into the bed to be substantially fixed against horizontal movement and pivoting at the proximal end about a lengthwise axis upon application of a horizontal load. A plate has a hole corresponding to each distal end of a pile, the hole having a diameter sufficient to actually receive a corresponding distal end of a pile while allowing for rotation and translation of the distal end of the pile relative to the plate. A connector connects the plate and the piles. The connector permits translation and rotation of the distal ends of the piles relative to the plate upon application of a horizontal load less than a select amount and prevents translation and rotation of the distal ends of the piles relative to the plate upon application of a horizontal load greater than or equal to the select amount. The connector is preferably a steel bonnet fastened to the plate over each hole, each steel bonnet cap having an inner diameter slightly greater than an outer diameter of a corresponding pile.
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CH2M Hill Inc.
Graysay Tamara L.
Lagman Frederick L.
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