Stanje naprezanja oko podzemnog otvora

undergraduate thesis

• Title (english): Stresses around underground openings
• Author: Marta Mrdalj
• Mentor: Lovorka Librić (mentor)
• Committee member: Meho-Saša Kovačević (predsjednik povjerenstva)
• Committee member: Mario Bačić (član povjerenstva)
• Committee member: Marijan Car (član povjerenstva)
• Granter: University of Zagreb; Faculty of Civil Engineering; (Geotechnical Engineering); Zagreb
• Defense date and country: 2023-09-26, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Civil Engineering; Geotechnology

Abstract

Prilikom izvođenja građevinskih radova na ili ispod površine stijenske mase dolazi do preraspodijele primarnih naprezanja, a to novonastalo stanje se naziva sekundarno stanje naprezanja. Postoji nekoliko načina za računanje sekundarnih naprezanja, a u ovom radu su obrađeni analitički proračuni koji koriste teoriju elastičnosti i princip superpozicije, te numerički modeli. Objašnjen je utjecaj oblika iskopa i kvalitete stijenske mase na stanje naprezanja oko podzemnog otvora, te sustav primarne podgrade koji se izvodi za poboljšanje stabilnosti i održavanje samonosivosti stijenske mase.

Abstract (english)

During construction ,on or below the surface of a rock mass, there is a redistribution of primary stresses, and this newly created state is called the secondary stress state. There are several methods for calculating secondary stresses, and this paper covers analytical calculations using the theory of elasticity and the principle of superposition, as well as numerical models. This paper also covers influence of the excavation shape and the quality of the rock mass on the stress state around the underground opening. When excavating a tunnel, a primary support system is implemented to improve stability and maintain the self-supporting capacity of the rock mass.

• Keywords: primarna naprezanja; sekundarna naprezanja; analitički proračuni; numerički modeli; tunel; primarna podgrada
• Keywords (english): Primary stresses; secondary stresses; analytical calculations; numerical models; tunnel; primary support system
• Language: croatian
• URN:NBN: urn:nbn:hr:237:478507
• Study programme: Title: Civil Engineering; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka građevinarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka građevinarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2023-10-24 09:05:01