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Multiobjective optimization of post-tensioned concrete box-girder road bridges considering cost, CO2 emissions, and safety

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Multiobjective optimization of post-tensioned concrete box-girder road bridges considering cost, CO2 emissions, and safety

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dc.contributor.author García Segura, Tatiana es_ES
dc.contributor.author Yepes, V. es_ES
dc.date.accessioned 2016-11-28T16:25:16Z
dc.date.available 2016-11-28T16:25:16Z
dc.date.issued 2016-10
dc.identifier.issn 0141-0296
dc.identifier.uri http://hdl.handle.net/10251/74665
dc.description.abstract This paper presents a multiobjective optimization of post-tensioned concrete road bridges in terms of cost, CO2 emissions, and overall safety factor. A computer tool links the optimization modulus with a set of modules for the finite-element analysis and limit states verification. This is applied for the case study of a three-span continuous post-tensioned box-girder road bridge, located in a coastal region. A multiobjective harmony search is used to automatically search a set of optimum structural solutions regarding the geometry, concrete strength, reinforcing and post-tensioned steel. Diversification strategies are combined with intensification strategies to improve solution quality. Results indicate that cost and CO2 emissions are close to each other for any safety range. A one-euro reduction, involves a 2.34 kg CO2 emissions reduction. Output identifies the best variables to improve safety and the critical limit states. This tool also provides bridge managers with a set of trade-off optimum solutions, which balance their preferences most closely, and meet the requirements previously defined. es_ES
dc.description.sponsorship The authors acknowledge the financial support of the Spanish Ministry of Economy and Competitiveness, along with FEDER funding (BRIDLIFE Project: BIA2014-56574-R) and the Research and Development Support Program of Universitat Politecnica de Valencia (PAID-02-15). en_EN
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation Research and Development Support Program of Universitat Politècnica de València (PAID-02-15). es_ES
dc.relation Spanish Ministry of Economy and Competitiveness, along with FEDER funding (BRIDLIFE Project: BIA2014-56574-R) es_ES
dc.relation.ispartof Engineering Structures es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Multiobjective optimization es_ES
dc.subject CO2 emissions es_ES
dc.subject Safety es_ES
dc.subject Post-tensioned concrete es_ES
dc.subject Box-girder bridge es_ES
dc.subject Multiobjective harmony search es_ES
dc.subject.classification INGENIERIA DE LA CONSTRUCCION es_ES
dc.title Multiobjective optimization of post-tensioned concrete box-girder road bridges considering cost, CO2 emissions, and safety es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.engstruct.2016.07.012
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Escuela Técnica Superior de Ingenieros de Caminos, Canales y Puertos - Escola Tècnica Superior d'Enginyers de Camins, Canals i Ports es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto de Ciencia y Tecnología del Hormigón - Institut de Ciència i Tecnologia del Formigó es_ES
dc.description.bibliographicCitation García Segura, T.; Yepes, V. (2016). Multiobjective optimization of post-tensioned concrete box-girder road bridges considering cost, CO2 emissions, and safety. Engineering Structures. 125:325-336. doi:10.1016/j.engstruct.2016.07.012 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.1016/j.engstruct.2016.07.012 es_ES
dc.description.upvformatpinicio 325 es_ES
dc.description.upvformatpfin 336 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 125 es_ES
dc.relation.senia 316042 es_ES


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