Ponte Ferreirinha sobre o Rio Douro: do concurso internacional de conce\u00e7\u00e3o ao projeto de execu\u00e7\u00e3o.<\/h2>\n<\/div>\n\n\n\n
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O cons\u00f3rcio EDGAR CARDOSO, ARENAS & ASSOCIADOS e NOARQ venceu o concurso internacional de conce\u00e7\u00e3o de uma nova ponte sobre o Rio Douro inserida na nova linha Ruby da rede de Metro do Porto. A ponte fica localizada 500m a montante da Ponte da Arr\u00e1bida, atualmente Monumento Nacional.<\/p>\n\n\n\n
A ponte projetada \u00e9 uma estrutura tipo p\u00f3rtico com um v\u00e3o principal de 403 m, com tabuleiro em caix\u00e3o de altura vari\u00e1vel que sintetiza e respeita as formas em arco da ponte da Arr\u00e1bida. A ponte tem um comprimento total de 838 m e uma altura de mais de 75 m acima da \u00e1gua. A estrutura \u00e9 inteiramente de bet\u00e3o armado, com bet\u00e3o de alta resist\u00eancia e bet\u00e3o leve na parte central dos v\u00e3os principais, priorizando a sustentabilidade, necessidades de manuten\u00e7\u00e3o reduzidas e condi\u00e7\u00f5es ideais de durabilidade.<\/p>\n\n\n\n
O procedimento de constru\u00e7\u00e3o inclui um complexo processo de avan\u00e7os sucessivos em consola, com suspens\u00e3o por tirantes provis\u00f3rios e torres tempor\u00e1rias para evitar a coloca\u00e7\u00e3o de apoios interm\u00e9dios no rio Douro ou interfer\u00eancias no canal de navega\u00e7\u00e3o.<\/p>\n\n\n\n
Miguel Sacrist\u00e1n is a Ms. Civil Engineer, Office Director in Arenas & Asociados in Santander. He has been responsible for the Project, site supervisi\u00f3n and construction process of many relevant structures, including some as the cable stayed bridge in Santander PCTCAN, the HALO footbridge in Vigo, Delicias footbridge in Zaragoza or other structures internationally for example in Peru (Chilina bridge) or more recently acting as coordinator for the structure team in the Ponte da Ferreirinha Project in Porto.<\/small><\/p>\n\n\n\n
Filipe Vasques \u00e9 Doutor em Engenharia Civil, Engenheiro Civil S\u00e9nior e Especialista em Estruturas, S\u00f3cio e Diretor da EDGAR CARDOSO e docente no Instituto Superior de Engenharia de Lisboa. Tem sido respons\u00e1vel pela coordena\u00e7\u00e3o e conce\u00e7\u00e3o de v\u00e1rios projetos, de entre os quais diversas Obras de Arte na Nova Liga\u00e7\u00e3o ferrovi\u00e1ria entre \u00c9vora e Caia, incluindo a Ponte de Pardais, as Obras de Arte da concess\u00e3o rodovi\u00e1ria do Baixo Alentejo e, mais recentemente, a nova Ponte da Ferreirinha para o Metro do Porto.<\/small><\/p>\n<\/div>\n\n\n\n
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Miguel Sacrist\u00e1n<\/em><\/p>\n\n\n\n\n\n\n
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Filipe Manuel Vasques <\/em><\/p>\n<\/div>\n<\/div>\n\n\n\n\n\n\n\n
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Precast Concrete in Tall Buildings <\/h2>\n<\/div>\n\n\n\n
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This talk will present the fib Bulletin 101 – Precast Concrete in Tall Buildings which has been produced by Task Group 6.7 in fib Commission 6, in collaboration with PCI. <\/p>\n\n\n\n
It was felt in Commission 6 that there was not an up-to-date reference available that brought together in a single document modern applications of precast concrete in tall buildings. Task Group 6.7 was therefore set up to address this issue and to prepare a \u201cState of the Art Report\u201d on the subject. It focuses on how to integrate precast concrete into tall buildings and aims to capture the interest and influence not only design professionals but all involved parties without being unduly theoretical in approach. <\/p>\n\n\n\n
The report is divided into four parts. The first four chapters introduce the reader to the benefits that can be achieved through integrating precast concrete into tall building construction and the various systems available. The next four chapters cover the individual \u201cbuilding blocks\u201d in precast systems, i.e. floors, walls, columns and stairs. Here particular attention is given to design details and production methodology. There then follow three chapters on areas of specific interest: building facades, design in seismic zones, and construction of precast structures. The final chapter has numerous case studies from many different regions that illustrate the principles outlined in the preceding chapters.<\/p>\n\n\n\n
George Jones is an independent engineering consultant and chartered engineer with over thirty years\u2019 experience in the precast concrete industry. Member of fib Commission 6 for prefabrication since 2009 and member of several task groups in the Commission. Convener of TG6.7, \u201cPrecast Concrete in Tall Buildings\u201d resulting in the publication of Bulletin 101 in December 2021.<\/small><\/p>\n<\/div>\n\n\n\n
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George Jones (BSc CEng MICE MIEI<\/em>)<\/p>\n<\/div>\n<\/div>\n\n\n\n\n\n\n\n
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Recent UHPFRC applications to make reinforced concrete bridges sustainable<\/h2>\n<\/div>\n\n\n\n
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UHPFRC (Ultra-High Performance Fibre Reinforced Cementitious Composite) is complemented by reinforcing steel to enhance the resistance and durability of structural elements. For bridges, application of impermeable, tensile strain hardening UHPFRC follows two fundamental concepts: 1) strengthening of existing bridges by adding a layer of UHPFRC, and 2) construction of new bridges in reinforced UHPFRC. <\/p>\n\n\n\n
Several recent UHPFRC project realizations in Switzerland are presented using UHPFRC for improving existing and building new bridges. The underlying design concepts and issues of dimensioning and execution are highlighted. The projects are assessed with respect to their environmental impact. In the domain of existing bridges, UHPFRC allows to preserve the existing bridge and its embodied energy while extending its service duration and keeping costs low. In the domain of new bridges, lightweight UHPFRC bridges consume less cement and steel than traditional reinforced concrete bridges. Composite timber-UHPFRC bridges allow to minimize the environmental impact.<\/p>\n\n\n\n
From 1995 to 2023, Eugen Br\u00fchwiler was professor for maintenance and safety of existing structures at EPFL (Swiss Federal Institute of Technology) in Lausanne, Switzerland. His teaching and research activities included methods of bridge examination of structural and fatigue safety by means of data from monitoring as well as the use of Ultra-High Performance Fibre Reinforced Cementitious Composites (UHPFRC) for the rehabilitation and strengthening of existing RC structures. Currently, he is consultant in many projects related to existing bridges and buildings, often of high cultural value.<\/small><\/p>\n<\/div>\n\n\n\n
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Eugen Br\u00fchwiler (Professor Emeritus EPFL)<\/em><\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
Ponte Ferreirinha sobre o Rio Douro: do concurso internacional de conce\u00e7\u00e3o ao projeto de execu\u00e7\u00e3o. O cons\u00f3rcio EDGAR CARDOSO, ARENAS & ASSOCIADOS e NOARQ venceu o concurso internacional de conce\u00e7\u00e3o de uma nova ponte sobre o Rio Douro inserida na nova linha Ruby da rede de Metro do Porto. A ponte fica localizada 500m a … <\/p>\n
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