Evolution of construction processes for metro stations in Argentina

Author(s): 
Alejo Sfriso and Jorge Laiun
Date: 
Thursday, March 22, 2012
First presented: 
South American Tunneling - SAT 2012
Type: 
Published paper
Category: 
Geotechnical

Buenos Aires, Argentina, is expanding it’s metro network. Some 22 km of new tunnels and a number of metro stations have been constructed between 1998 and 2011, and three new lines including 20 km of tunnels are scheduled for construction in the near future. During these years, construction procedures for underground stations have achieved significant improvements that had a heavy impact on design, costs and speed of construction. Some of these improvements are described in this paper, along with a brief update of the characterization of Buenos Aires soils for NATM tunneling.

Feature Author

Alejo Oscar Sfriso

Alejo O. Sfriso is a Principal Engineer with 25 years of experience in geotechnical engineering for infrastructure and mining works. He is an expert in the application of numerical methods for geotechnical design and analysis. In addition to his activity at SRK, he is the Director of AOSA - Geotechnical Laboratory, Professor of Soil Mechanics and Geology of the University of Buenos Aires, Vice President for South America of the International Society of Soil Mechanics and Geotechnical Engineering for the period 2017 - 2021, former Professor of Geotechnics at the National University of La Plata and former President of the Argentinean Society of Geotechnical Engineering.

Principal Consultant
PhD, Civil Engineer
SRK Buenos Aires
Jorge Laiun

Jorge has worked on problems of tunneling and underground works since 2004. He has participated in the geotechnical and structural design as well as in the optimization of construction procedures of tunnels for the underground network of Buenos Aires and Santiago. His expertise includes rock tunnels for mining in a variery of projects located in Argentina and Chile. Jorge has 13 years of experience and participation in the design of geotechnical and structural projects. He has focused his experience in the design using numerical methods applied to geotechnics.

Principal Consultant
Geotechnical & Structural Engineer
SRK Buenos Aires
SRK North America