Djelovanje kumulativnih eksplozivnih naboja na rušenje potpora mosta

undergraduate thesis

• Author: Ivan Škoko Gavranović
• Mentor: Marija Kušter Marić (mentor)
• Granter: University of Zagreb; (Croatian Defence Academy "Dr. Franjo Tuđman"); Zagreb
• Defense date and country: 2021-09-20, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Chemical Engineering

Abstract

U ovom su završnom radu prikazane vrste eksploziva i način njihovog postavljanja, analiza
rušenja armirano betonskih stupova kakvi se najčešće koriste pri izgradnji mostova, vijadukata i
nadvožnjaka te postupak pripreme eksplozivnih naboja za miniranje izgrađenih stupova. Kroz
ispitivanje učinka različitih vrsta eksplozivnih naboja na armirano betonski stup uspoređeni su
unutarnji, vanjski i kumulativni eksplozivni naboj. Sva ispitivanja za sva 3 načina postavljanja
eksplozivnog naboja provedena su u istim vremenskim uvjetima, a što se odnosi na tlak,
temperaturu te bez utjecaja atomosferilija. Kako bi utvrdili učinak svakog od triju eksplozivnih
naboja primijenili smo nerazorne metode ispitivanja što uključuje vizualni pregled armirano
betonskog stupa, određivanje tlačne čvrstoće pomoću sklerometra, ispitivanje ultrazvukom i
ispitivanje električne otpornosti površine betona koje smo proveli prije i nakon detonacije
eksplozivnih naboja. Lokacija provedbe ispitivanja je bila vojni poligon Cerovac.

Abstract (english)

This Final BSc Thesis presents the types of explosives and the method of their installation, the
analysis of the demolition of reinforced concrete piers, which are most often used in the
construction of bridges, viaducts, and overpasses, and the process of preparing explosive charges
for blasting the built piers. Through the examination of the effect of different types of explosive
charges on a reinforced concrete pier, the internal, external, and cumulative explosive charges
were compared. All tests for all 3 ways of mounting an explosive charge were carried out in the
same weather conditions, which refers to pressure, temperature, and without the influence of
rainfall. To determine the effect of each of the three explosive charges, we applied nondestructive testing methods, which include visual inspection of the reinforced concrete pier,
determination of pressure strength using a sclerometer, ultrasound testing, and testing of the
electrical resistance of the concrete surface that we carried out before and after the detonation of
explosive charges. The location of the interrogation was the Cerovac military training ground.

• Keywords: armirano betonski stup; eksplozivni naboj; nerazorna ispitivanja; kumulativni rezač
• Keywords (english): reinforced concrete pier; explosive charge; non-destructive tests; cumulative cutter
• Language: croatian
• URN:NBN: urn:nbn:hr:249:685152
• 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: 2022-01-18 09:31:31