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South America: Sistema Riachuelo Engineering

SRK Argentina - August 1, 2025

The project is part of the Sistema Riachuelo, the first major expansion of Buenos Aires’ main sewer system in over 70 years.

TAGS: Buenos Aires, Pampeano formations, sewer system
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Reliability Analysis of Early Age Concrete Liner Subjected to Blast Vibrations

Alejo Sfriso, Graham Howell, P. Barbieri - September 8, 2022

This paper proposes a reliability analysis method to estimate the optimum waiting time between casting of fresh concrete and resuming of blasting operation based on blasting parameters, concrete properties and environmental data like ambient temperature.

TAGS: Tunnelling, Blasting, Early Age Concrete, Reliability, Tunnels
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Accessibility, Circulation & Evacuation Plan: Phase 1, Stage I&II. Buenos Aires Metro, Argentina

Jorge Laiún, Pedro Martín Fernández - September 7, 2022

In this paper, the tender and detailed project finally built for those structures are presented and discussed, as well as photographs of the construction process.

TAGS: Tunnels, Excavations, Construction procedures, access
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EPB-TBM Tunnel Under Internal Pressure: Assessment of Serviceability

Alejo Sfriso, D. Tsingas, R. Aradas, M.Martini, N. Labanda - June 27, 2022

This paper presents the numerical analysis of the structural forces acting on Argentina's Mantanza-Riachuelo basin recovery tunnel rings using a risk-oriented approach that considers the stochastic nature of materials, stratigraphy and tunnel-ground interaction.

TAGS: Risk Assessment, Data Analysis, Tunnel
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A Risk Assessment of Downdrag Induced by Reconsolidation of Clays After Upwards Pipe Jacking

Alejo Sfriso, D. Tsingas, R. Aradas, M. Martini, N. Labanda - June 27, 2022

Salini-Impregilo is building part of the largest sanitary sewer system in Argentinian history. A risk assessment of the downdrag is presented in this paper, based on the estimation of the force and/or displacement in the riser tunnel union generated by this effect.

TAGS: Risk Assessment, Creep Displacements, Estimation, Civil Engineering, Consulting Engineers, Construction procedures, Construction Sector
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