INFLUENCE OF SOIL-STRUCTURE INTERACTION PHENOMENES ON THE SEISMIC RESPONSE OF MARINE WIND TURBINES (Q3142130): Difference between revisions
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Revision as of 13:36, 10 October 2021
Project Q3142130 in Spain
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | INFLUENCE OF SOIL-STRUCTURE INTERACTION PHENOMENES ON THE SEISMIC RESPONSE OF MARINE WIND TURBINES |
Project Q3142130 in Spain |
Statements
61,710.0 Euro
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72,600.0 Euro
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85.0 percent
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1 January 2018
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31 December 2020
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UNIVERSIDAD DE LAS PALMAS DE GRAN CANARIA
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28°7'43.93"N, 15°26'5.64"W
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35016
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UNO DE LOS RETOS QUE AFRONTA NUESTRA SOCIEDAD ES GARANTIZAR LA TRANSICION HACIA UN SISTEMA ENERGETICO QUE PERMITA REDUCIR LA DEPENDENCIA DE COMBUSTIBLES FOSILES Y QUE SEA, POR TANTO, MAS SOSTENIBLE, SEGURO Y EFICIENTE. LA GENERACION DE ENERGIA ELECTRICA A PARTIR DE ENERGIA EOLICA ES UNA DE LAS TECNOLOGIAS QUE VA A PERMITIR AFRONTAR ESTE RETO, SIENDO LA EOLICA MARINA UNA DE LAS OPCIONES DE MAYOR POTENCIAL DEBIDO AL ENORME RECURSO EOLICO DISPONIBLE EN EL MEDIO MARINO. DICHA TECNOLOGIA SE ENCUENTRA AHORA EN EXPANSION, NO SOLO EN TERMINOS DE NUMERO DE UNIDADES INSTALADAS, SINO TAMBIEN EN TERMINOS DE SU POTENCIA. EN ESTE CRECIMIENTO, ESTA TECNOLOGIA DEBERA PODER LLEGAR A TODAS LAS REGIONES CON POTENCIAL EOLICO, INCLUIDAS AQUELLAS REGIONES CON RIESGO SISMICO, DONDE SU IMPLANTACION, A DIA DE HOY, ES PRACTICAMENTE INEXISTENTE. EN ESTE SENTIDO, ES NECESARIO SER CAPACES DE DESARROLLAR ESTRUCTURAS DE SOPORTE QUE MINIMIZEN EL RIESGO DE COLAPSO O FALLO DE LOS AEROGENERADORES EN CASO DE TERREMOTO, ENTRE OTRAS CARGAS DE NATURALEZA DINAMICA, MAS AUN SI SE TIENE EN CUENTA EL TAMAÑO CRECIENTE DE LAS UNIDADES INSTALADAS Y EL CONSECUENTE AUMENTO DE LAS FUERZAS INERCIALES DESARROLLADAS Y DEL IMPACTO DEL POSIBLE FALLO DE UNA UNIDAD CONCRETA. ADEMAS, EN EL CASO DE AEROGENERADORES INSTALADOS DIRECTAMENTE EN EL LECHO MARINO, LAS FUERZAS A LAS QUE SE VE SOMETIDA LA ESTRUCTURA, LAS CARACTERISTICAS DEL LECHO MARINO Y LA GRAN ALTURA DE LAS UNIDADES, HACEN QUE LA RESPUESTA ESTRUCTURAL ESTE MUY INFLUENCIADA POR EL SUELO CIRCUNDANTE Y POR LA TIPOLOGIA DE CIMENTACION UTILIZADA. ESTOS FENOMENOS DE INTERACCION SUELO-ESTRUCTURA NO ESTAN AUN, EN GENERAL, BIEN COMPRENDIDOS NI MODELADOS, LO QUE AUMENTA SIGNIFICATIVAMENTE LA INCERTIDUMBRE EXISTENTE SOBRE LAS PROPIEDADES DINAMICAS DE LA ESTRUCTURA FINAL E INFLUYE NEGATIVAMENTE EN LA VIDA UTIL DEL CONJUNTO. ASI, Y CON EL OBJETIVO DE CONTRIBUIR A MEJORAR Y FACILITAR EL DISEÑO, ANALISIS Y DIMENSIONAMIENTO DE LAS ESTRUCTURAS DE SOPORTE DE AEROGENERADORES OFFSHORE CIMENTADOS DIRECTAMENTE SOBRE EL LECHO MARINO, SE PROPONE EL DESARROLLO DE MODELOS COMPUTACIONALES QUE PERMITAN ESTUDIAR ESTE PROBLEMA TENIENDO EN CUENTA LOS EFECTOS DE INTERACCION SUELO-ESTRUCTURA. SE PRETENDE DESARROLLAR UN MODELO INTEGRADO QUE IMPLIQUE A TODOS LOS ELEMENTOS RELEVANTES (FONDO MARINO, CIMENTACION, SUBESTRUCTURA, TORRE Y CONJUNTO GONDOLA-ROTOR-PALAS) Y SUS INTERACCIONES MUTUAS, CON EL OBJETIVO DE APLICARLO POSTERIORMENTE A CASOS CONCRETOS QUE PERMITAN GENERAR CONOCIMIENTO Y CONCLUSIONES DE UTILIDAD PARA LA MEJORA DE LOS DISEÑOS Y EL AUMENTO DE LA VIDA UTIL Y DE LA SEGURIDAD DEL AEROGENERADOR. SE CONSIDERARAN TRES TIPOLOGIAS DE CIMENTACION DIFERENTES, PUDIENDO CADA CASO ESTAR CONFIGURADO CON UNO O VARIOS ELEMENTOS DE CIMENTACION: A) CIMENTACIONES DE GRAVEDAD (SUPERFICIALES O PARCIALMENTE ENTERRADAS), B) CAJONES DE SUCCION, O BUCKETS, Y C) PILOTES. SE TRATARA DE MODELOS NUMERICOS, FORMULADOS Y DESARROLLADOS POR EL GRUPO DE INVESTIGACION, BASADOS FUNDAMENTALMENTE EN EL METODO DE LOS ELEMENTOS FINITOS PARA EL TRATAMIENTO DE SUBESTRUCTURA, TORRE Y, EN MUCHOS CASOS, CIMENTACION. PARA EL TRATAMIENTO DEL SUELO CIRCUNDANTE, EN CAMBIO, SE UTILIZARAN FORMULACIONES BASADAS EN EL METODO DE LOS ELEMENTOS DE CONTORNO, FORMULACIONES INTEGRALES, O FORMULACIONES SIMPLIFICADAS TIPO WINKLER. ESTOS MODELOS SERAN UTILIZADOS POSTERIORMENTE PARA GENERAR CONOCIMIENTO UTIL PARA LA INDUSTRIA EOLICA, Y PODRAN SER ADEMAS PUESTOS A DISPOSICION DE LA SOCIEDAD PARA SU UTILIZACION. (Spanish)
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ONE OF THE CHALLENGES FACED BY OUR SOCIETY IS THAT OF GUARANTYING THE TRANSITION TO AN ENERGY SYSTEM THAT ALLOWS REDUCING THE DEPENDENCE ON FOSSIL FUELS AND, CONSEQUENTLY, HELPS TO REACH A MORE SUSTAINABLE, SAFE AND EFFICIENT SITUATION. THE GENERATION OF ELECTRIC ENERGY FROM WIND IS ONE OF THE APPROACHES THAT WILL ALLOW ACHIEVING THIS CHALLENGE, BEING OFFSHORE WIND ONE OF THE OPTIONS OF GREATEST POTENTIAL DUE TO THE HUGE WIND RESOURCES AVAILABLE AT SEA. THIS TECHNOLOGY IS NOW EXPANDING, NOT ONLY IN TERMS OF THE NUMBER OF UNITS THAT ARE BEING INSTALLED, BUT ALSO IN TERMS OF ITS INCREASING POWER. AS PART OF THIS EXPANSION, THIS TECHNOLOGY MUST BE ABLE TO REACH ALL REGIONS WHERE WIND RESOURCES ARE AVAILABLE, INCLUDING THOSE WITH SEISMIC RISKS, WHERE THEY ARE, TODAY, ALMOST NONEXISTENT. IN THIS REGARDS, IT IS NECESSARY TO BE ABLE TO DEVELOP AND BUILD SUPPORT STRUCTURES THAT MINIMIZE THE RISK OF COLLAPSE IN CASE OF EARTHQUAKE, AMONG OTHER DYNAMIC LOADS, EVEN MORE SO IF ONE CONSIDERS THE INCREASING SIZE OF THE INSTALLED UNITS AND THE RESULTING INCREASE IN THE INERTIAL FORCES BEING DEVELOPED AND THE IMPACT OF THE POSSIBLE FAILURE OF A PARTICULAR UNIT. BESIDES, IN THE CASE OF BOTTOM-FIXED WIND TURBINES, THE FORCES SUPPORTED BY THE STRUCTURE, THE PROPERTIES OF THE SEABED AND THE HEIGHT OF THE UNITS PRODUCE A STRUCTURAL RESPONSE THAT IS SIGNIFICANTLY INFLUENCED BY THE SURROUNDING SOIL AND THE FOUNDATION CONFIGURATION. IN GENERAL, THESE SOIL-STRUCTURE INTERACTION PHENOMENA ARE NOT YET WELL UNDERSTOOD OR INCORPORATED INTO THE MODELS, WHICH INCREASES SIGNIFICANTLY THE UNCERTAINTIES THAT EXIST OVER THE DYNAMIC PROPERTIES OF THE EVENTUAL STRUCTURES AND INFLUENCES, NEGATIVELY, THE LIFE EXPECTANCY OF THE SYSTEM AND THE RISK OF FAILURE IN CASE OF EARTHQUAKE._x000D_ THUS, THE PRESENT PROJECT AIMS AT DEVELOPING COMPUTATIONAL MODELS FOR BOTTOM-FIXED OFFSHORE WIND TURBINES THAT ALLOW STUDYING THE DYNAMIC STRUCTURAL RESPONSE TAKING SOIL-STRUCTURE INTERACTION INTO ACCOUNT, AND WITH THE OBJECTIVE OF CONTRIBUTING TO IMPROVE AND FACILITATE THE DESIGN, ANALYSIS AND DIMENSIONING OF SUPPORT STRUCTURES FOR BOTTOM-FIXED OFFSHORE WIND TURBINES. THE AIM IS DEVELOPING AN INTEGRATED MODEL INCLUDING ALL RELEVANT ELEMENTS (SEABED, FOUNDATIONS, SUBSTRUCTURE, TOWER AND ROTOR-NACELLE-BLADES) AND THEIR MUTUAL INTERACTIONS, WITH THE OBJECTIVE OF APPLYING IT TO CASE STUDIES THAT ALLOW PRODUCING KNOWLEDGE AND CONCLUSIONS USEFUL TO IMPROVE CURRENT DESIGNS, INCREASE LIFE EXPECTANCY AND REDUCE STRUCTURAL RISKS. THREE DIFFERENT TYPES OF FOUNDATIONS WILL BE CONSIDERED, BEING EACH SPECIFIC CASE CONFIGURED BY ONE OR SEVERAL INDIVIDUAL ELEMENTS: A) GRAVITY FOUNDATIONS, B) SUCTION CAISSONS, OR BUCKETS, AND C) MONOPILES AND PILES. THE MODELS WILL BE BASED ON NUMERICAL APPROACHES, FORMULATED AND DEVELOPED BY THE APPLICANT RESEARCH GROUP, AND MOSTLY BASED ON THE FINITE ELEMENT METHOD FOR THE TREATMENT OF SUBSTRUCTURE, TOWER AND, IN MANY INSTANCES, FOUNDATION. FOR THE TREATMENT OF THE SURROUNDING SOIL, ON THE OTHER HAND, THE APPROACHES WILL BE BASED ON THE BOUNDARY ELEMENT METHOD, ON INTEGRAL FORMULATIONS, OR ON WINKLER-TYPE SIMPLIFIED FORMULATIONS. THESE MODELS WILL BE USED TO PRODUCE KNOWLEDGE OF INTEREST FOR THE WIND INDUSTRY, AND CAN ALSO BE PUBLISHED AS OPEN TOOLS AVAILABLE FOR USE. (English)
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Palmas de Gran Canaria, Las
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Identifiers
BIA2017-88770-R
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