Numerical Analysis of Changing the Force Factors in Temporary Lining at the Tunnel Construction by the NATM
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Date
2019
Journal Title
Journal ISSN
Volume Title
Publisher
EDP Sciences
Abstract
ENG: Abstract. The paper presents the results of a numerical analysis of force
factors in temporary lining at the tunnel construction by New Austrian
Tunneling Method (NATM). The relevance of the performed research is
substantiated by the complexity of the temporary lining operation in the
form of arches combination, anchors, and shotcrete that arose during
construction of the Beskydskyi tunnel in Ukraine. NATM, used in
construction, is associated with a change in the sectional area of the
working and a staged installation of temporary lining, which leads to a
gradual change in the stress-strain state of the "temporary lining –
surrounding massif" system. In turn, this leads to a change in the force
factors (bending moments and normal forces) in temporary lining. In this
study, a series of finite-element models simulating the stages of rock
excavation and installation of lining elements have been developed and
analyzed. The obtained results allowed to determine the cardinal change of
force factors in temporary lining, depending on the stage of construction.
Changing the force factors at different stages of the tunnel construction by
the NATM makes it possible to perform an optimal selection for temporary
lining location.
Description
V. Kuprii: 0000-0002-6517-2554,V. Petrenko: 0000-0003-2201-3593
Keywords
tunnel, force factors, temporary lining, NATM, КМТ, ГНДЛ ШС
Citation
Kuprii V., Petrenko V., Kuprik S., Kripak Ye. Numerical Analysis of Changing the Force Factors in Temporary Lining at the Tunnel Construction by the NATM. E3S Web of Conferences. 2019. Vol. 109 : International Conference Essays of Mining Science and Practice, RMGET 2019, Dnipro, Ukraine, 25 June 2019 – 27 June 2019. Dnipro, 2019. DOI: 10.1051/e3sconf/201910900044.