diplomska naloga
Martin Hostnik (Author), Janko Logar (Mentor), Jure Klopčič (Co-mentor)

Abstract

Namen diplomske naloge je analitična analiza primarnih podpornih ukrepov pri gradnji predorov v skladu s principi Nove avstrijske metode gradnje predorov (NATM) z uporabo konvergenčne metode. Predstavljeno je praktično določanje mehanskih parametrov hribine s pomočjo geološkega trdnostnega indeksa (GSI), katere potrebujemo za določitev reakcijske krivulje hribine. Nadalje so predstavljeni najpogosteje uporabljeni tipi podporja in njihov prispevek k podporni krivulji. Na podporno krivuljo vpliva čas vgradnje podporja, tip podporja in način upoštevanja le-tega. Brizgan beton in jeklene segmente vedno upoštevamo v podporni krivulji, medtem ko lahko sidra upoštevamo tako v podporni krivulji kot s spremenjenim potekom reakcijske krivulje hribine zaradi povečanja strižne odpornosti hribine. V nalogi sta predstavljena oba postopka, ki sta bila implementirana v Excelove preglednice, ki omogočajo primerjavo obeh pristopov upoštevanja pasivnih sider v analizi. V diplomski nalogi so predstavljeni rezultati izračuna ter njihova primerjava z dejanskimi pomiki nekaterih predorov na slovenskem avtocestnem omrežju.

Keywords

gradbeništvo;diplomska naloga;UNI;B-GR;konvergenčna krivulja;podporje;brizgan beton;sidra;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FGG - Faculty of Civil and Geodetic Engineering
Publisher: [M. Hostnik]
UDC: 624.19(043.2)
COBISS: 6822241 Link will open in a new window
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Downloads: 498
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Other data

Secondary language: English
Secondary title: Use of convergence-confinement method for preliminary support design tunnelling
Secondary abstract: The main aim of the presented thesis is an analitical analysis of the primary support system in the tunnels, constructed according to the priciples of the New Austrian Tunneling Method (NATM) using convergence-confinement method. To determine a ground reaction curve of the surrounding rock mass, parameters were calculated using Geological Strenght Index (GSI). Further on different types of support and their contribution to the support curve are discussed. Support curve shape depends on the type of support used, time of support installation and approach to the support consideration. Shotcrete and steel arches are always incorporated in the support curve while rockbolts can be included as part of the support curve or in the convergence curve due to rock reinforcement effect. Both approaches are presented and implemented into the Excel spreadsheets allowing their comparison. To verify both approaches, the measured displacements from some tunnels on the Slovenian motorway network were compared to the calucalted values as presented in the Appendix to the thesis.
Secondary keywords: convergence curve;support;shotcrete;rockbolt;
File type: application/pdf
Type (COBISS): Bachelor thesis/paper
Thesis comment: Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Pages: X, 34 str.
ID: 8708133