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Authors
Advisor(s)
Abstract(s)
A utilização do espaço subterrâneo tem-se revelado promissora, e as discussões sobre a importância e o
potencial deste tipo de obra nas cidades atuais têm vindo a tornar-se cada vez mais frequentes e
difundidas no meio técnico.
Atualmente, o contexto específico de cada obra subterrânea leva à escolha de várias metodologias
construtivas, dada a grande variedade de opções existentes.
Na década de 80, surgiu a execução de poços de grande diâmetro como uma adaptação do método
austríaco de túneis (NATM - New Austrian Tunneling Method) aplicado na vertical, o que originou o
método sequencial vertical.
O principal objetivo deste trabalho consiste no estudo do método sequencial vertical aplicado à execução
de poços de grande diâmetro em ambientes urbanos, com ênfase num estudo de caso realizado no Metro
do Porto, mais especificamente no poço de saída de emergência da Estação Santo António da linha
circular.
Este estudo abrange todos os aspetos relevantes desde o projeto de execução até à conclusão da
construção, proporcionando uma compreensão abrangente da metodologia, com aplicação ao caso de
estudo.
Nas conclusões, são apresentadas as vantagens e desvantagens desta abordagem, que poderão servir
como base para a decisão de utilizar esta metodologia em futuros projetos.
Embora os poços de grande diâmetro, escavados segundo o método sequencial vertical, se revelem uma
solução segura e económica, a informação sobre esta metodologia construtiva é limitada, o que motivou
a elaboração e desenvolvimento deste documento.
Underground use has shown promising, and discussions about the importance and potential of this type of work in today's cities have become increasingly frequent and widespread in technical circles. Currently, the specific context of each underground project leads to the choice of several construction methodologies, given the wide variety of existing options. In the 1980s, the execution of large diameter shafts emerged as an adaptation of the austrian tunneling method (NATM - New Austrian Tunneling Method) vertically applied, which gave rise to the vertical sequential method. The main purpose of this work is to study the vertical sequential method applied to the execution of large diameter shafts in urban environments, with emphasis on a case study carried out in the Porto Light Metro, more specifically in the emergency exit shaft at the Santo António station of the circular line. This study covers all relevant aspects from project execution to construction completion, providing a comprehensive understanding of the methodology, with application to the case study. In the conclusions, the advantages and disadvantages of this approach are presented, which could serve as a basis for the decision to use this methodology in future projects. Although large diameter shafts, excavated using the vertical sequential method, prove to be a safe and economical solution, information on this construction methodology is limited, which motivated the elaboration and development of this document.
Underground use has shown promising, and discussions about the importance and potential of this type of work in today's cities have become increasingly frequent and widespread in technical circles. Currently, the specific context of each underground project leads to the choice of several construction methodologies, given the wide variety of existing options. In the 1980s, the execution of large diameter shafts emerged as an adaptation of the austrian tunneling method (NATM - New Austrian Tunneling Method) vertically applied, which gave rise to the vertical sequential method. The main purpose of this work is to study the vertical sequential method applied to the execution of large diameter shafts in urban environments, with emphasis on a case study carried out in the Porto Light Metro, more specifically in the emergency exit shaft at the Santo António station of the circular line. This study covers all relevant aspects from project execution to construction completion, providing a comprehensive understanding of the methodology, with application to the case study. In the conclusions, the advantages and disadvantages of this approach are presented, which could serve as a basis for the decision to use this methodology in future projects. Although large diameter shafts, excavated using the vertical sequential method, prove to be a safe and economical solution, information on this construction methodology is limited, which motivated the elaboration and development of this document.
Description
Keywords
Método sequencial vertical Poços grande diâmetro Metro do Porto