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Paper Information

Title: 

DESIGN OF SINGLE LAYER ARMORED BREAKWATERS NEARBY A STEP-LIKE SEABED FEATURE

Type: PAPER
Author(s): BANIJAMALI MORTEZA,BANIJAMALI BABAK,SOROURIAN SOROUSH
 
 
 
Name of Seminar: INTERNATIONAL CONFERENCE ON COASTS, PORTS AND MARINE STRUCTURES (ICOPMAS) PORTS & MARITIME ORGANIZATION
Type of Seminar:  CONFERENCE
Sponsor:  PORTS AND MARITIME ORGANIZATION
Date:  2008Volume 8
 
 
Abstract: 

1. INTRODUCTION WELL-ESTABLISHED DESIGN CRITERIA AND METHODOLOGIES GENERALLY EXIST IN ENGINEERING PRACTICE FOR VARIOUS TYPES OF RUBBLE-MOUND BREAKWATERS, DRAWING MAINLY UPON THE RESULTS OF PAST PHYSICAL MODELING EXPERIMENTS. HOWEVER, THERE IS RELATIVELY LESS CLEAR GUIDANCE CURRENTLY AVAILABLE FOR THE NUMERICAL MODELING AND HYDRAULIC DESIGN PROCEDURE, VIA APPLICATION OF THE EMPIRICAL FORMULAE, SUCH AS VAN DER MEER’S, HUDSON’S, AND VAN GENT’S, IN THE PARTICULAR CASE OF AN ABRUPT STEP-LIKE SEABED FEATURE POSSIBLY COMBINED WITH THE CURVATURE OF THE BATHYMETRY CONTOUR-LINES, NEARBY A PROPOSED LOCATION FOR NEW BREAKWATERS, AS IN FIGURE 1, PRESENTING THE LAYOUT OF A NEW HARBOR IN PROXIMITY OF THE STEP. SUCH AN OCCURRENCE IS PRONE TO A REDUCTION OF HYDRAULIC STABILITY AND INCREASED WAVE RUN-UP AND OVERTOPPING DUE TO MORE SIGNIFICANT SHOALING VELOCITIES DUE TO THE SHARP GRADIENT AND/OR WAVE FOCUSING EFFECTS DUE TO THE LENS LIKE ACTION OF THE SEABED ON WAVES AFTER WAVE PROPAGATION OVER SUCH A FORESHORE THEREBY DESERVING A MORE RIGOROUS APPROACH TO THE PRELIMINARY DESIGN, EVEN THOUGH, PHYSICAL MODELING SHALL PROVIDE THE FINAL VERDICT.

 
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