Eksplozivno djelovanje na armiranobetonske kolničke ploče mostova

undergraduate thesis

• Title (english): Blast Loading on the Reinforced Concrete Bridge Deck
• Author: Anđela Matković
• Mentor: Marija Kušter Marić (mentor)
• Mentor: Mladen Fusić (komentor)
• Committee member: Ivica Smojver (predsjednik povjerenstva)
• Committee member: Marija Kušter Marić (član povjerenstva)
• Committee member: Mladen Fusić (član povjerenstva)
• Granter: University of Zagreb; (Croatian Defence Academy "Dr. Franjo Tuđman"); Zagreb
• Defense date and country: 2020-09-16, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Interdisciplinary Technical Sciences

Abstract

U okviru ovog završnog rada analiziran je utjecaj eksplozivnog djelovanja na armiranobetonske
kolničke ploče mostova koji su srušeni (potpuno ili djelomično) i oštećeni tijekom Domovinskog
rata. Analizom je obuhvaćeno 70 mostova sa jednim od šest karakterističnih tipova
armiranobetonske kolničke ploče: ploča kao vrsta rasponskog sklopa, kolnička ploča iznad
AB/PB nosača položenih jedan do drugog i razmaknutih AB/PB nosača, kolnička ploča kao
gornji dio AB/PB nosača sandučastog poprečnog presjeka, viseće ploče i AB ploče kao
rasponski sklop visećih mostova te kolnička AB ploča spregnuta čeličnim nosačima. Prilikom
analize ponašanja različitih tipova AB ploča sagledan je utjecaj bitnih parametara mosta: stanje i
starost mosta prilikom eksplozije, mjesto eksplozivnog djelovanja, broj raspona ploče i poprečni
presjek rasponske konstrukcije te utjecaj načina aktivacije eksplozije na mogućnost daljnje
eksploatacije mosta i njegove sanacije.
Nadalje, radom je obuhvaćeno i praktično rušenje šest modela AB ploča sa različitim razredom
tlačne čvrstoće i ojačavajućih dodataka (čelična i sintetska vlakna). Kako bi se odredio stupanj
oštećenosti AB ploča izazvan eksplozivnim djelovanjem, ploče su prije i nakon provedbe rušenja
ispitane nerazornim metodama (sklerometar, ultrazvuk i resipod) te su rezultati mjerenja
uspoređeni.

Abstract (english)

In this baccalaureus graduate thesis the impact of explosive action on reinforced concrete slabs
was analyzed on the bridges, which were demolished (completely or partially) and damaged
during the Homeland War. The analysis included 70 bridges consisted of six different types of
reinforced concrete slab: slab as a type of superstructure, slab above reinforced/prestressed
concrete girders set next to each other and spaced apart reinforced/prestressed concrete girders,
slab as upper part of reinforced/prestressed concrete box girder, suspension slab decks and
reinforced concrete slabs as a superstructure of suspension bridges and reinforced concrete slabs
– steel giders composit superstructure. Through analysis of the behaviour of different types of
reinforced concrete slabs it was essential to take into account the influence of important features
of the bridge: condition and age of the bridge at the time of explosion, precise place of explosive
action, number of spans and cross section of superstructure and the influence of explosive
activation on the possibility of further exploitation of the bridge.
Furthermore, this work includes the practical demolition of six specimens of reinforced concrete
slabs with different grade of compression strength and reinforcing additives (steel and synthetic
fibers). In order to determine the degree of damage of reinforced concrete slabs caused by
explosive action, the slabs were tested by non-destructive methods (Schmidt hammer, ultrasound
device and resipod) before and after the demolition, and the measurement results were compared.

• Keywords: AB kolnička ploča; spregnuti most; srušeni most; oštećeni most; eksplozija; eksplozivno djelovanje; udar projektila; nerazorno ispitivanje
• Keywords (english): reinforced concrete slab; composite bridge; demolished bridge; damaged bridge; explosion; explosive action; missile hit; non-destructive testing
• Language: croatian
• URN:NBN: urn:nbn:hr:249:827337
• Study programme: Title: Military Engineering; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica inženjer/inženjerka vojnog inženjerstva (sveučilišni/a prvostupnik/ prvostupnica inženjer/inženjerka vojnog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2021-02-03 14:47:33