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Monitoring of the Corrosion on a Steel Sheet-Pile Marine Breakwater by Systematic Thickness Measurements

Journal of Civil Engineering and Architecture 2018年第1期12卷 39-50页

作者： luis osmel millan solorzano Department Millan Engineering San Jose 30303 Costa Rica

In Quepos, Pacific of Costa Rica, it was finished on 2010 the first phase of a marina, including two mix breakwaters, with rubble mound （rocks and concrete units）, and 25 circular steel sheet piles cofferdam cells, filled with sand and gravel. The maintenance plan, considers tracking sheet pile corrosion, comparing ＂actual＂ against expected rates, checking structural limits, and programming countermeasures if accelerated corrosion is identified. Specific control sections, along the breakwaters, both inside and outside the basin, were established. In each section, thicknesses were measured every meter from the top of the steel cell to seabed using an ultrasonic equipment, and an underwater transducer. Both land crew, and divers for submerged portions, were used. The measurements campaigns are for several years from 2011 to 2016. Sectors of the breakwater with varied corrosion attack levels could be differentiated. Also, corrosion rates and lifespans were estimated, both general for the structures, and specific for each section and level. In turn, this allowed to identify maintenance priorities, defining sites where measures of corrosion protection should initiate, as well, to have confidence in the structural capacity and safety of the breakwaters.

关键词： Monitoring of structures maritime works sheet piling corrosion ultrasonic thickness measurements.

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Monitoring of the Corrosion on a Steel Sheet-pile Marine Breakwater by Systematic Thickness Measurements

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Journal of Civil Engineering and Architecture 2022年第10期16卷 519-530页

作者： millan solorzano luis osmel luis osmel millan Engineering San JoséCosta Rica

In Quepos,Pacific of Costa Rica,it was finished on 2010 the first phase of a marina,including two mix breakwaters,with rubble mound(rocks and concrete units),and 25 circular steel sheet piles cofferdam cells,filled with sand and *** maintenance plan,considers tracking sheet pile corrosion,comparing'actual'against expected rates,checking structural limits,and programming countermeasures if accelerated corrosion is *** control sections,along the breakwaters,both inside and outside the basin,were *** each section,thicknesses were measured every meter from the top of the steel cell to seabed using an ultrasonic equipment,and an underwater *** land crew,and divers for submerged portions,were *** measurements campaigns are for several years from 2011 to *** of the breakwater with varied corrosion attack levels could be ***,corrosion rates and lifespans were estimated,both general for the structures,and specific for each section and *** turn,this allowed to identify maintenance priorities,defining sites where measures of corrosion protection should initiate,as well,to have confidence in the structural capacity and safety of the breakwaters.

关键词： Monitoring of structures maritime works sheet piling corrosion ultrasonic thickness measurements

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