Ejemplos de Marinas Italianas

7/29/2019 Ejemplos de Marinas Italianas

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Prof. Leopoldo Franco

([email protected])

DESIGN OF ITALIAN MARINAS

AND RECENT ANALYSIS OF STORM DAMAGE

UNIVERSITA DI ROMA TRE

Land-sea margins: wave overtoppingand protection along the coastline

Marinas byModimar 2003

MAIN NEW ASPECTS OF MARINA DESIGN

Attention to environment, history anb beauty!

reducedvisual impact (low crest, lessconcrete)

water quality (forced circulation,openingsthroughbreakwaters)

reducedimpact to beaches (bypass)

removability of structures(caissons, pontoons)

Experience from ancient Roman harbours

PORT OF CLAUDIUS ROME (42 A.D.)

MARINA LAYOUTS

Original round central planshapes

safer navigation access

better hydraulic performances

reduced morphodynamic impacts

nicer architectonic image

CANNIGIONE (Sardinia)


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ACITREZZA (Sicily)CATANIA (Sicily) RIO MARTINO (Lazio)

wave penetration model

EXISTING INLET NEW PROPOSED DESIGN

PISTICCI (Basilicata) MARINA DI GROSSETO (TUSCANY) - 2003 MARINA DI GROSSETO (TUSCANY) - 2003


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Marina village Costa Turchese (Sardinia) - 1991 CANOUAN (CARIBBEAN SEA) TURGUTREIS (TURKEY)

TURGUTREIS (TURKEY) - 2003OSTIA (Rome) -20 00

OSTIA


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SALIVOLI (Tuscany) -2 000SALIVOLI

SALIVOLI

CATANIA (breakwater cross sections)

OVERSPILL CHANNEL AT ARMOUR CREST

TO REDUCE OVERTOPPING

2D and 3D model tests

SALERNO MARINA:

Expensive tandem breakwater solution(not a MODIMAR design!)


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MIXED ARMOURED MOUNDS (*)

AND ECOLOGICAL UNITS(*25% OF ROCK ON UPPER EMERGED TETRAPOD SLOPE)

ECOPODE

Mola marina (Elba, Tuscany) breakwater design

Depth= 10 m, Hs= 2.0 m, Ts=8.0 s

Removable caissons and precast crown modules

Deep 0.5 wide gap between caisson for flushing

Perforated front-rear-cross walls

ABSORBING CAISSONS FOR MARINA

QUAYWALLS AND VENICE CHANNELS(AGAINST BOAT WAKE: T=1.5 2.5 s)

OSTIA MARINA CROSS SECTIONSCLASH WP6 Hazard and economic analysis related to overtopping

Analysis of damages to Italian marinas due to wave overtopping

Storms november

2000-2001

RapalloSan Remo

Salivoli

Marina degli

Aregai

Marina location


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Salivoli Salivoli Salivoli

Salivoli: damage summary

The structural damages due to overtopping were small (around

200,000 ), plus a few boats failures.

Damage is mainly related to the small pavement block, to some 20

broken plastic pedestals and to the small displacement of a fixed pier

Salivoli Rapallo


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Rapallo Rapallo Rapallo

Rapallo: damage summary

Apart from the damage to the breakwater rock armour, the

overtopping water caused the collapse of some 120 m of gravity type

quaywall with a consequent reconstruction cost of about 1 million,

while the total damage to the quay fittings and supply plants was

estimated as 700,000 .

San RemoSan Remo


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San Remo

San Remo

Structural damage (cracking of pavement, removal of parapet flagstone

revetment, dismantling of 22 concrete pedestals, sinking of one floating

pier) for a total estimated damage of 500,000 .

Eight small yachts, four cars and one van were sunk with a total

economic loss for their owners estimated as 600,000 .

San Remo : damage summary

Attempt of estimating from video-recordingthe single

overtopping volume; Salivoli marina, 11 nov2001.

( ) =end

start

t

t

t

W dzdttzuV

)(

0

,

( ) NudttuVend

start

t

t

W == ( )dttNend

start

t

t

=

Assume that u does not vary during the

overtopping time and over the water depth

Vov/m=u*max*tov/2

Linearshallow water wave:

Depth-limited breakingwave:

smghc /3.8==

hH = ( ) smghc /1.111 =+=

CELERITY OF THE OVERTOPPING WAVES

VELOCITY OF THE OVERTOPPING WATER

u=c ??

00,00 s

02,64 s

Total overtopping

time: 2,64 s

Maximum waterdepth

over the crest: 3.55 m

00,63 s

Vov=40 m3/m but u is

probably overestimated

and what is the air

content?


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Some conclusions:

Overtopping storms may cause significant

economic losses mainly to yachts and utilities(e.g. 2 M per marina).

Minor damage occurred with q= 10 l/s/m and

estimated Vmax=10 m3/m; larger damage

with q=50 l/s/m and Vmax= 50 m3/m

THANK YOU FOR YOUR ATTENTIONTO HAZARDS !!

Ejemplos de Marinas Italianas

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