Alternative Title

Paper No. 6.11

Location

St. Louis, Missouri

Session Start Date

3-8-1998

Session End Date

3-15-1998

Abstract

The paper describes the design methods and summarises the results of the analyses for the recent NA TM excavation of an underground station of the Athens Metro. The non-linear finite element calculations show that for the excavation method used (twin side-wall galleries and a central pillar), the settlements at ground surface are very sensitive to the assumed values of the ground properties as well as the excavation sequence and construction details; it is shown that the settlements can be reduced significantly by increasing the number of the excavation stages and the density of the temporary support measures.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Fourth Conference

Publisher

University of Missouri--Rolla

Publication Date

3-8-1998

Document Version

Final Version

Rights

© 1998 University of Missouri--Rolla, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Analysis and Performance of the NATM Excavation of an Underground Station for the Athens Metro

St. Louis, Missouri

The paper describes the design methods and summarises the results of the analyses for the recent NA TM excavation of an underground station of the Athens Metro. The non-linear finite element calculations show that for the excavation method used (twin side-wall galleries and a central pillar), the settlements at ground surface are very sensitive to the assumed values of the ground properties as well as the excavation sequence and construction details; it is shown that the settlements can be reduced significantly by increasing the number of the excavation stages and the density of the temporary support measures.