Kurzzeitprognose der Spritzbetonauslastung auf Basis von Beobachtungen während des Tunnelvortriebs

Manuel Entfellner, Alexander Kluckner, Gerold Lenz, Alexander Poisel, Wulf Schubert

Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

Abstract

Verschiebungsverläufe im Tunnelbau sind sowohl zeit- als auch vom Ortsbrustabstand abhängig und somit nicht sofort nach dem Ausbruch abgeklungen. Daher erfährt die aufgebrachte Spritzbetonschale eine zeitlich variable Auslastung, die vom aufgezwungenen Dehnungsverlauf und vom Materialverhalten des Spritzbetons abhängt. Eine Überbeanspruchung der Spritzbetonschale führt zur Rissbildung, zu kosten- und zeitintensiven Sanierungsarbeiten und gegebenenfalls zu gefährlichen Situationen für das Personal vor Ort und sollte somit verhindert werden. Mit der in diesem Beitrag präsentierten Methode ist es möglich, anhand einer Kombination von geologisch-geotechnischen Parametern und der Messdateninterpretation von Verschiebungsverläufen die Prognosesicherheit des Systemverhaltens zu erhöhen. Damit kann bereits frühzeitig auf eine allfällige Überbeanspruchung des geplanten Ausbaus reagiert und dieser gegebenenfalls vor Ort angepasst werden (z. B. Umstellung auf duktilen Ausbau). Der Beitrag schließt mit der Erläuterung der Methode an einem Fallbeispiel vom Semmering-Basistunnel, Baulos SBT 1.1 – Tunnel Gloggnitz, ab.
Titel in ÜbersetzungKurzzeitprognose der Spritzbetonauslastung auf Basis von Beobachtungen während des Tunnelvortriebs
Originalspracheenglisch
Seiten (von - bis)214-225
Seitenumfang12
FachzeitschriftGeomechanics and Tunnelling
Jahrgang11
Ausgabenummer3
DOIs
PublikationsstatusVeröffentlicht - 1 Jun 2018

Fingerprint

shotcrete
Linings
Tunnels
tunnel
prediction
Excavation
Crack initiation
Repair
repair
excavation
crack
method

Schlagwörter

  • Verschiebungen
  • Prognose
  • duktiler Ausbau
  • Spritzbetonauslastung
  • Felsmechanik
  • Konventioneller Vortrieb
  • Stützmittel

Dies zitieren

Short-term prediction of shotcrete utilization based on observations during tunnelling. / Entfellner, Manuel; Kluckner, Alexander; Lenz, Gerold; Poisel, Alexander; Schubert, Wulf.

in: Geomechanics and Tunnelling , Jahrgang 11, Nr. 3, 01.06.2018, S. 214-225.

Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

Entfellner, Manuel ; Kluckner, Alexander ; Lenz, Gerold ; Poisel, Alexander ; Schubert, Wulf. / Short-term prediction of shotcrete utilization based on observations during tunnelling. in: Geomechanics and Tunnelling . 2018 ; Jahrgang 11, Nr. 3. S. 214-225.
@article{4e8334fcb1124fada12bf8ad4566f3c9,
title = "Short-term prediction of shotcrete utilization based on observations during tunnelling",
abstract = "Displacement curves in tunnelling depend both on time and the distance from the face and have thus not died down immediately after excavation. Therefore – the applied shotcrete lining experiences temporally variable loading, which depends on the forced strain curve and on the material behaviour of the shotcrete. Overloading of the shotcrete lining leads to crack formation, costly and laborious repair work and possibly also to dangerous situations for those present at the location, and should therefore be prevented. With the method presented in this article, which combines geological-geotechnical parameters and the interpretation of measured displacement data, the accuracy of the short-term prediction of the system behaviour can be improved. This makes it possible to react early to any potential overloading of the planned support and adapt it if necessary (e.g. changeover to ductile support). The article concludes with an explanation of the method through the example of the Semmering Base Tunnel, contract SBT 1.1 – Tunnel Gloggnitz.",
keywords = "displacements, ductile support, shotcrete utilization, prediction, rock mechanics, conventional tunnelling, support, Verschiebungen, Prognose, duktiler Ausbau, Spritzbetonauslastung, Felsmechanik, Konventioneller Vortrieb, St{\"u}tzmittel",
author = "Manuel Entfellner and Alexander Kluckner and Gerold Lenz and Alexander Poisel and Wulf Schubert",
year = "2018",
month = "6",
day = "1",
doi = "10.1002/geot.201800013",
language = "English",
volume = "11",
pages = "214--225",
journal = "Geomechanics and Tunnelling",
issn = "1865-7362",
publisher = "Ernst & Sohn",
number = "3",

}

TY - JOUR

T1 - Short-term prediction of shotcrete utilization based on observations during tunnelling

AU - Entfellner, Manuel

AU - Kluckner, Alexander

AU - Lenz, Gerold

AU - Poisel, Alexander

AU - Schubert, Wulf

PY - 2018/6/1

Y1 - 2018/6/1

N2 - Displacement curves in tunnelling depend both on time and the distance from the face and have thus not died down immediately after excavation. Therefore – the applied shotcrete lining experiences temporally variable loading, which depends on the forced strain curve and on the material behaviour of the shotcrete. Overloading of the shotcrete lining leads to crack formation, costly and laborious repair work and possibly also to dangerous situations for those present at the location, and should therefore be prevented. With the method presented in this article, which combines geological-geotechnical parameters and the interpretation of measured displacement data, the accuracy of the short-term prediction of the system behaviour can be improved. This makes it possible to react early to any potential overloading of the planned support and adapt it if necessary (e.g. changeover to ductile support). The article concludes with an explanation of the method through the example of the Semmering Base Tunnel, contract SBT 1.1 – Tunnel Gloggnitz.

AB - Displacement curves in tunnelling depend both on time and the distance from the face and have thus not died down immediately after excavation. Therefore – the applied shotcrete lining experiences temporally variable loading, which depends on the forced strain curve and on the material behaviour of the shotcrete. Overloading of the shotcrete lining leads to crack formation, costly and laborious repair work and possibly also to dangerous situations for those present at the location, and should therefore be prevented. With the method presented in this article, which combines geological-geotechnical parameters and the interpretation of measured displacement data, the accuracy of the short-term prediction of the system behaviour can be improved. This makes it possible to react early to any potential overloading of the planned support and adapt it if necessary (e.g. changeover to ductile support). The article concludes with an explanation of the method through the example of the Semmering Base Tunnel, contract SBT 1.1 – Tunnel Gloggnitz.

KW - displacements

KW - ductile support

KW - shotcrete utilization

KW - prediction

KW - rock mechanics

KW - conventional tunnelling

KW - support

KW - Verschiebungen

KW - Prognose

KW - duktiler Ausbau

KW - Spritzbetonauslastung

KW - Felsmechanik

KW - Konventioneller Vortrieb

KW - Stützmittel

U2 - 10.1002/geot.201800013

DO - 10.1002/geot.201800013

M3 - Article

VL - 11

SP - 214

EP - 225

JO - Geomechanics and Tunnelling

JF - Geomechanics and Tunnelling

SN - 1865-7362

IS - 3

ER -