Brief report on the construction of the Liberdade/São Bento Station of circular line G (Pink Line) of the Porto Metro
Brief report on the construction of the Liberdade/São Bento Station of circular line G (Pink Line) of the Porto Metro
Liberdade/São Bento station (L/SBS) is one of the four stations that are part of the new circular line, also known as “Line G” or “Pink Line”. This new project will increment 3 km’s to Oporto light rail system and will connect the existing stations of São Bento and Casa da Música. Once it is located in the heart of Oporto city centre, it was important to ensure the minimum impact at the surface and traffic disruption, which why Liberdade/São Bento station is being built using a mix of cut-and-cover and top-down construction methodologies. The station is formed by its main body, which develops longitudinally to the axis of the railway, and by its surface accesses, which develops perpendicularly to the railway axis at both ends and in the central area of the station body. Due to its location and dimension, the construction process has revealed himself as extremely challenging, once it combines the complexity of building in an high urban area, extremely affected by various services (water supply, wastewater network, rainwater, gas, electricity and all telecommunication services), but also historical (proximity to several monuments and the appearance of new archaeological monuments during excavations), along with the geological-geotechnical conditions considered in the design of excavations, retaining support and foundations (structural support and protection of buildings; high levels of groundwater; groundwater contamination). This paper aims to describe the main constraints that are being faced during the execution and explain how are they being managed and overcome.
V. Nascimento; S. Mateus; I. Coelho
18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)
D - Current and new construction methods
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