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1.
SANACIJA PLAZU Z ZAVAROVANJEM BREŽINE S KAMNITIM TEŽNOSTNIM OPORNIM ZIDOM
Klemen Krabonja, 2014, diploma project paper

Abstract: V projektni nalogi so prikazane splošne značilnosti plazišč ter primer geomehanske obdelave projekta sanacije splazele brežine z masivnim opornim zidom. V uvodnem poglavju so predstavljeni vzroki nastanka ter razlogi za nujnost sanacije aktiviranih plazišč v geotehnični praksi. V drugem poglavju je obrazložena klasifikacija, preučevanje in načini sanacij plazišč. V tretjem poglavju je obravnavan način sanacije dejanske splazitve brežine z masivno podporno konstrukcijo. Ugotavljamo, da je pri masivnih podpornih zidovih potrebno analizirati mejno stanje nosilnosti in uporabnosti, ker zaradi velike togosti konstrukcije obstaja možnost konstrukcijskih poškodb še preden se mejno stanje nosilnosti sploh aktivira.
Keywords: plazišča, lezenje, drsenje, zemeljski pritiski, podporne konstrukcije, oporni zid, drenaža, tlačne napetosti, projektiranje
Published: 27.08.2014; Views: 1158; Downloads: 212
.pdf Full text (2,81 MB)

2.
Stress-strain analysis of an abutment tooth with rest seat prepared in a composite restoration
Ljiljana Tihaček Šojić, Aleksandra M Lemić, Dragoslav Stamenković, Vojkan Lazić, Rebeka Rudolf, Aleksandar Todorović, 2011, original scientific article

Abstract: Placing a composite restoration on abutments for the removable of partial dentures gives favorable aesthetic results with minimal intervention. The objective of this paper is to analyze the stress distribution of a tooth with occlusal rest-seat preparation in the composite and compare it to the biomechanical behavior of an intact tooth, assuming that the stress and strain distribution throughout the intact tooth provides the control scenario. For this finite-element study two different models were designed. The first model was the three-dimensional (3D) model of an intact tooth, and the other one was a 3D model of a tooth with a composite restoration and an appropriate occlusal rest-seat preparation. Load stimulations were performed when the rest was fully seated on its corresponding rest seat and abutment tooth in order to obtain data about the biomechanical behavior of the abutment tooth compared to the intact toothćs stress-distribution pattern. The results of our analyses are presented and analyzed qualitatively. The occlusal loading effect along the sound tooth exhibits a wider high-stress area, localized in correspondence with the occlusal enamel, than the restored teeth. This is due to the rigidity of the enamel. The reduction in the stress values occurs in the composite restoration, which is less rigid. Its lower rigidity allows larger cusp movements. The stress-distribution pattern of the restored tooth with the rest seat showed that introducing an occlusal restoration does not differ from the intact tooth globally, but locally. Our findings indicate that the composite rest-seat restoration absorbs the loading, so reducing the stresses inside the tooth's structure.
Keywords: kompozitna opora, oporni zob, porazdelitev napetosti, FEM
Published: 10.07.2015; Views: 606; Downloads: 35
.pdf Full text (274,18 KB)
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3.
Geomehanska analiza opornega AB zidu
Izidor Bukovšek, 2015, diploma project paper

Abstract: V projektni nalogi je izvedena stabilnostna analiza opornega zidu OZ-03 na odseku Jagodje - Lucija. V nalogi so predstavljene opravljene terenske, ter laboratorijske raziskave hribine. Glede na rezultate je bila opravljena klasifikacija hribine. Na koncu je izvedena stabilnostna analiza krožnih porušnic po Bishopovi metodi. V primeru nestabilnosti, je predlagana ustrezna projektna rešitev.
Keywords: gradbeništvo, geomehanika, oporni zid, stabilnostna analiza
Published: 16.09.2015; Views: 697; Downloads: 180
.pdf Full text (2,34 MB)

4.
Geomehanska analiza opornega zidu OZ - 02 pri hitri cesti Jagodje - Lucija
Nuša Vodušek, 2017, diploma project paper

Abstract: V projektni nalogi je predstavljena analiza mejnega stanja nosilnosti v programu GEO5 2016/Gravity Wall za oporni zid OZ - 02, ki se nahaja na odseku hitre ceste Jagodje – Lucija. Za analizo mejnega stanja nosilnosti, so bile potrebne tudi terenske in laboratorijske raziskave hribine, ki so del projektne naloge. Glede na pridobljene rezultate raziskav je bila opravljena klasifikacija hribine. Zaključek naloge vključuje analizo krožnih porušnic po Bishopovi metodi.
Keywords: Gradbeništvo, oporni zid, geomehanika, analiza mejnega stanja, GEO5 2016/Gravity Wall.
Published: 21.12.2016; Views: 635; Downloads: 69
.pdf Full text (1,32 MB)

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