Analysis and Optimal Design of Segmental Precast Concrete Bridges with Balanced Cantilever Construction (Case Study: Esteghlal Bridge in Isfahan)

The construction of segmental precast concrete bridges is an increase due to its superior performance and economic advantages. This type of bridge is appropriate for spans within 50 to 250 m, known as mega-projects and the design optimization would lead to considerable economic benefits. In this stu...

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Autores principales:	Reza Ghiamat, Morteza Madhkhan
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2021
Materias:	optimization segmental concrete bridge box girder balanced cantilever genetic algorithm Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/944d8626ea0048f19f7c836322eb556e
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id	oai:doaj.org-article:944d8626ea0048f19f7c836322eb556e
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spelling	oai:doaj.org-article:944d8626ea0048f19f7c836322eb556e2021-11-08T15:54:49ZAnalysis and Optimal Design of Segmental Precast Concrete Bridges with Balanced Cantilever Construction (Case Study: Esteghlal Bridge in Isfahan)2476-39772538-261610.22065/jsce.2019.174254.1797https://doaj.org/article/944d8626ea0048f19f7c836322eb556e2021-06-01T00:00:00Zhttps://www.jsce.ir/article_91634_18a75eb5caaabe6821f77ebd4516c32f.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616The construction of segmental precast concrete bridges is an increase due to its superior performance and economic advantages. This type of bridge is appropriate for spans within 50 to 250 m, known as mega-projects and the design optimization would lead to considerable economic benefits. In this study, a box-girder cross section of bridge superstructure with balanced cantilever construction method is assessed. The depth of cross section, thickness of top and bottom flange, thickness of webs and the count of strands of pre-stressed steel are considered as design variables. The optimum design is characterized by geometry, serviceability, ductility, and ultimate limit states specified by the American Association of State Highway and Transportation Officials (AASHTO) standard and AASHTO Load and Resistance Factor Design (LRFD) specifications. Genetic algorithm (GA) is applied for cost and weight optimization. To validate functionality of this algorithm, a real bridge constructed in the city of Isfahan, Iran (Esteghlal Bridge, completed in 2017) is optimized as a case study. The total of a 13% reduction in cost and weight of the bridge superstructure is observed. The cost optimization algorithm is run by considering different spans and relation between superstructure cost and span length is assessed. The efficiency of applying the GA in optimization of this kind of bridges is proved.Reza GhiamatMorteza MadhkhanIranian Society of Structrual Engineering (ISSE)articleoptimizationsegmental concrete bridgebox girderbalanced cantilevergenetic algorithmBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 8, Iss 4, Pp 5-25 (2021)
institution	DOAJ
collection	DOAJ
language	FA
topic	optimization segmental concrete bridge box girder balanced cantilever genetic algorithm Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	optimization segmental concrete bridge box girder balanced cantilever genetic algorithm Bridge engineering TG1-470 Building construction TH1-9745 Reza Ghiamat Morteza Madhkhan Analysis and Optimal Design of Segmental Precast Concrete Bridges with Balanced Cantilever Construction (Case Study: Esteghlal Bridge in Isfahan)
description	The construction of segmental precast concrete bridges is an increase due to its superior performance and economic advantages. This type of bridge is appropriate for spans within 50 to 250 m, known as mega-projects and the design optimization would lead to considerable economic benefits. In this study, a box-girder cross section of bridge superstructure with balanced cantilever construction method is assessed. The depth of cross section, thickness of top and bottom flange, thickness of webs and the count of strands of pre-stressed steel are considered as design variables. The optimum design is characterized by geometry, serviceability, ductility, and ultimate limit states specified by the American Association of State Highway and Transportation Officials (AASHTO) standard and AASHTO Load and Resistance Factor Design (LRFD) specifications. Genetic algorithm (GA) is applied for cost and weight optimization. To validate functionality of this algorithm, a real bridge constructed in the city of Isfahan, Iran (Esteghlal Bridge, completed in 2017) is optimized as a case study. The total of a 13% reduction in cost and weight of the bridge superstructure is observed. The cost optimization algorithm is run by considering different spans and relation between superstructure cost and span length is assessed. The efficiency of applying the GA in optimization of this kind of bridges is proved.
format	article
author	Reza Ghiamat Morteza Madhkhan
author_facet	Reza Ghiamat Morteza Madhkhan
author_sort	Reza Ghiamat
title	Analysis and Optimal Design of Segmental Precast Concrete Bridges with Balanced Cantilever Construction (Case Study: Esteghlal Bridge in Isfahan)
title_short	Analysis and Optimal Design of Segmental Precast Concrete Bridges with Balanced Cantilever Construction (Case Study: Esteghlal Bridge in Isfahan)
title_full	Analysis and Optimal Design of Segmental Precast Concrete Bridges with Balanced Cantilever Construction (Case Study: Esteghlal Bridge in Isfahan)
title_fullStr	Analysis and Optimal Design of Segmental Precast Concrete Bridges with Balanced Cantilever Construction (Case Study: Esteghlal Bridge in Isfahan)
title_full_unstemmed	Analysis and Optimal Design of Segmental Precast Concrete Bridges with Balanced Cantilever Construction (Case Study: Esteghlal Bridge in Isfahan)
title_sort	analysis and optimal design of segmental precast concrete bridges with balanced cantilever construction (case study: esteghlal bridge in isfahan)
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2021
url	https://doaj.org/article/944d8626ea0048f19f7c836322eb556e
work_keys_str_mv	AT rezaghiamat analysisandoptimaldesignofsegmentalprecastconcretebridgeswithbalancedcantileverconstructioncasestudyesteghlalbridgeinisfahan AT mortezamadhkhan analysisandoptimaldesignofsegmentalprecastconcretebridgeswithbalancedcantileverconstructioncasestudyesteghlalbridgeinisfahan
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Analysis and Optimal Design of Segmental Precast Concrete Bridges with Balanced Cantilever Construction (Case Study: Esteghlal Bridge in Isfahan)

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