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Evaluation of the Surface Settlement above the Prague Metro Line A Extension Constructed by Two Shields

Identifikátory výsledku

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    Evaluation of the Surface Settlement above the Prague Metro Line A Extension Constructed by Two Shields

  • Popis výsledku v původním jazyce

    The new section of the Prague metro V.A is located in the west part of Prague between stations Dejvická and Motol Hospital. The new metro section is 6.2 km long and has four new stations. Majority of two running tunnels 6.2 km long were excavated by two EPB (Earth Pressure Balance) shields (2 x 4.8 km), it was the first use of modern tunnelling machines in the Czech Republic. Surface settlement above running tunnels caused by EPB shields was regularly monitored. The following paper is focused on evaluation of mentioned surface settlement using volume loss. Consequently numerical modelling of various cross-sections was executed. Modelling was realised by finite element method in 2D using software Plaxis. Two different approaches were applied for modelling of 3D effect in 2D. Important parameters Mstage and Cref were derived for selected cross-sections by back analyses (comparison of numerical modelling results with results of monitoring). Results of realised numerical modelling and volume loss evaluation can be used for preparation and realisation of similar tunnels in similar geology (for example for construction of Prague metro line D which will be probably also excavated by EPB shields).

  • Název v anglickém jazyce

    Evaluation of the Surface Settlement above the Prague Metro Line A Extension Constructed by Two Shields

  • Popis výsledku anglicky

    The new section of the Prague metro V.A is located in the west part of Prague between stations Dejvická and Motol Hospital. The new metro section is 6.2 km long and has four new stations. Majority of two running tunnels 6.2 km long were excavated by two EPB (Earth Pressure Balance) shields (2 x 4.8 km), it was the first use of modern tunnelling machines in the Czech Republic. Surface settlement above running tunnels caused by EPB shields was regularly monitored. The following paper is focused on evaluation of mentioned surface settlement using volume loss. Consequently numerical modelling of various cross-sections was executed. Modelling was realised by finite element method in 2D using software Plaxis. Two different approaches were applied for modelling of 3D effect in 2D. Important parameters Mstage and Cref were derived for selected cross-sections by back analyses (comparison of numerical modelling results with results of monitoring). Results of realised numerical modelling and volume loss evaluation can be used for preparation and realisation of similar tunnels in similar geology (for example for construction of Prague metro line D which will be probably also excavated by EPB shields).

Klasifikace

  • Druh

    Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

  • CEP obor

    JN - Stavebnictví

  • OECD FORD obor

Návaznosti výsledku

Ostatní

  • Rok uplatnění

    2016

  • Kód důvěrnosti údajů

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Údaje specifické pro druh výsledku

  • Název periodika

    Acta Polytechnica

  • ISSN

    1210-2709

  • e-ISSN

  • Svazek periodika

    56

  • Číslo periodika v rámci svazku

    6

  • Stát vydavatele periodika

    CZ - Česká republika

  • Počet stran výsledku

    7

  • Strana od-do

    448-454

  • Kód UT WoS článku

  • EID výsledku v databázi Scopus

    2-s2.0-85009461460

Druh výsledku

Jx - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

Jx

CEP

JN - Stavebnictví

Rok uplatnění

2016