Foundation solutions near Trancão river, in Lisbon

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Publication Title
Foundation solutions near Trancão river, in Lisbon

Abstract
This paper describes the foundations solutions for the main stage for the World Youth Day in Lisbon 2023. The stage is located on an urban solid waste landfill that is sealed through a PEAD geomembrane, which made it impossible to use indirect foundations at an early phase. Underlying the deposits of municipal solid waste, emerges the alluvial formation composed of compressible soils, with weak mechanical characteristics, with variable thickness. In order to reduce the amplitude of differential displacements that could damage the structure, a preload landfill was carried out, in order to minimize the settlements that would occur at the time of the stage installation. During the time of permanence of the preload landfill, several reading campaigns of the instrumentation (topographic marks) were carried out in order to validate the initial assumptions. From the data collected from the instrumentation as well as from the tests carried out on site, the solution of the foundation for the stage was defined. The solution for the cover foundation was defined using ductile iron micropiles driven using the dry method, reinforced with self-drilling rod in the center, properly sealed in the miocene.
Authors
I. Braz; A. Pinto; C. Simoes; T. Gomes; C. Caxias

Published In

18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)

Theme

D - Current and new construction methods

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