A study of displacements of structures in the vicinity of deep excavation

Monika Mitew-Czajewska

Abstract

In the article the aspects concerning the excavation impact and values of displacements of the ground and existing structures in the vicinity of deep excavations are presented. Four cases of excavations in typical Quaternary soils of Warsaw executed in the close proximity to the existing metro tunnels (and station) are described with special emphasis put on the description and analysis of experimental data including in-situ measurements of vertical displacements of existing metro structures. The discussion and conclusions on the displacements of structures (EPB TBM tunnels with segmental lining and cubature metro stations) in the vicinity of excavations depending on their location relative to excavation are presented. Typical ranges of displacements in relation to the depth, distance and type of structures influenced by deep excavations are given. Equation for the prediction of vertical displacements of TBM tunnels in the vicinity of deep excavation is formulated. In addition, the 2D finite element modelling of one of the described example cases is made and presented in detail. The results of FE analysis are compared to the actual experimental monitoring data.
Author Monika Mitew-Czajewska (FCE / IRB)
Monika Mitew-Czajewska,,
- The Institute of Roads and Bridges
Journal seriesArchives of Civil and Mechanical Engineering, ISSN 1644-9665, (A 30 pkt)
Issue year2019
Vol19
No2
Pages547-556
Publication size in sheets0.5
Keywords in EnglishDeep excavation, Impact zone, Displacements, Numerical analysis
ASJC Classification2210 Mechanical Engineering; 2205 Civil and Structural Engineering
DOIDOI:10.1016/j.acme.2018.11.010
Languageen angielski
Score (nominal)30
ScoreMinisterial score = 30.0, 15-03-2019, ArticleFromJournal
Ministerial score (2013-2016) = 30.0, 15-03-2019, ArticleFromJournal
Publication indicators WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2016 = 1.935; WoS Impact Factor: 2017 = 2.763 (2) - 2017=2.562 (5)
Citation count*2 (2019-07-31)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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