Analiza pouzdanosti u tunelogradnji

master's thesis

• Title (english): Reliability analyses in tunneling
• Author: Tamara Gaćina
• Mentor: Lovorka Librić (mentor)
• Committee member: Meho-Saša Kovačević (predsjednik povjerenstva)
• Committee member: Lovorka Librić (član povjerenstva)
• Committee member: Marijan Car (član povjerenstva)
• Granter: University of Zagreb; Faculty of Civil Engineering; (Geotechnical Engineering); Zagreb
• Defense date and country: 2023-07-13, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Civil Engineering; Geotechnology

Abstract

U ovom radu provedena je analiza pouzdanosti za dionicu tunela Podmurvice na stacionaži od 1+620,42 m do 1+634,62 m. Povratnim analizama u kombinaciji sa geotehničkim mjerenjima i opažanjima utvrđuju se stvarne mehaničke karakteristike stijenske mase u kojoj se izvodi tunel, verificiraju ili modificiraju karakteristike elemenata primarnog podgradnog sustava te procjenjuju vremenski intervali stabilnosti nepodgrađenih raspona i redoslijed izvođenja radova na stabilizaciji iskopa. U radu su prikazane povratne numeričke analize iskopa i podgrađivanja u tunelu Podmurvice koje su provedene na temelju rezultata mjerenja u fazi izvedbe pomoću inklinometra i klizno mikrometra. Rezultati mjerenja i povratne analize poslužili su za optimalizaciju svih mjera podgrađivanja. Ujedno je prikazana analiza pouzdanosti koja je dala podatke o vjerojatnosti sloma za različite ulazne parametre koji imaju bitan utjecaj na stabilnost tunela.

Abstract (english)

This paper presents a reliability analysis for the Podmurvice tunnel section, ranging from chainage 1+620,42 m to 1+634,62 m. Through back analyses combined with geotehnical measurements and monitoring, the actual mechanical characteristics od the rock mass in which the tunnel is excavated are determined. Additionally, the characteristics of the primary substructure elements are verified or modified, and the time intervals for the stability of unsupported spans and the sequence of excavation stabilization works are estimated.
The paper includes back numerical analysis of excavation and support in the Podmurvice tunnel, based on measurement results obtained during the construction phase using inclinometers and sliding micrometers. The measurment results and back analyses were used to optimize all support measures. At the same time, reliability analysis was presented, which provided dana on the probability of failure for various input parameters that have a significant impact on the stability of the tunnel.

• Keywords: tunel; numeričke analize; geotehnička mjerenja; povratne analize; pouzdanost
• Keywords (english): tunnel; numerical analyses; geotehnical measurements; back analysis; reliability
• Language: croatian
• URN:NBN: urn:nbn:hr:237:192536
• Study programme: Title: Civil Engineering; specializations in: Construction Management, Transportation Engineering, Geotechnical Engineering, Hydraulic Engineering, Structural Engineering, Construction Materials, Theory and Modeling of Structures; Course: Geotechnical Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka građevinarstva (magistar/magistra inženjer/inženjerka građevinarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2023-07-17 13:13:17