ǂA ǂcomparison of linear and nonlinear seismic tunnel-ground interaction analyses

Elefterija Zlatanović (Author), Marina Trajković-Milenković (Author), Dragan Č. Lukić (Author), Stanko Brčić (Author), Vlatko Šešov (Author)

Abstract

In order to study the effects of a seismically induced tunnel–ground interaction, two-dimensional numerical analyses are performed using the sofware ANSYS. The study employs a coupled beam–spring model subjected to earthquake loading that is simulated under pure shear conditions and determined by a free-field ground-response analysis using the code EERA. The properties of the soil material are considered as both linear and nonlinear. The results obtained by linear dynamic analyses are compared with state-of-practice analytical elastic solutions. A comparison of the results of both linear and nonlinear analyses is also performed, and significant differences, as well as important factors influencing the tunnel–ground interaction for both cases, are evaluated.

Keywords

circular tunnel;linear/nonlinear soil behaviour;beam–spring model;plane-strain conditions;simplified dynamic FE analysis;soil–structure interaction;

Data

Language:	English
Year of publishing:	2016
Typology:	1.01 - Original Scientific Article
Organization:	UM FGPA - Faculty of Civil Engineering, Transportation Engineering and Architecture
UDC:	624.13:624.19
COBISS:	302919424
ISSN:	1854-0171
Parent publication:	Acta geotechnica Slovenica
Views:	965
Downloads:	59
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Slovenian
Secondary title:	Primerjava linearne in nelinearne seizmične interakcijske analize predor-tla
Secondary abstract:	Članek preučuje potresne učinke na interakcijo predor-tla. Za to so bile izvedene dvodimenzionalne numerične analize s pomočjo programa ANSYS. V študiji je uporabljen potresno obremenjen združeni model nosilec-vzmet, ki je simuliran pod čistimi strižnimi pogoji in določen z analizo odziva tal s prostim poljem z uporabo programske kode EERA. Lastnosti materiala tal so obravnavane tako linearno kot nelinearno. Rezultati, dobljeni z linearnimi dinamičnimi analizami so primerjani z v praksi znanimi analitičnimi elastičnimi rešitvami. Primerjani so tudi rezultati linearnih in nelinearnih analiz, za oba primera so ovrednotene pomembne razlike ter pomembni dejavniki, ki vplivajo na interakcijo predor-tla.
Secondary keywords:	geotehnika;predori;obnašanje tal;seizmika;
URN:	URN:SI:UM:
Type (COBISS):	Scientific work
Pages:	str. 26-42
Volume:	ǂVol. ǂ13
Issue:	ǂ[no.] ǂ2
Chronology:	2016
ID:	10941815