Tehnologija gradnje mostov z metodo narivanja

diplomska naloga

Klemen Sinkovič (Author), Jože Lopatič (Mentor), Bojan Majes (Thesis defence commission member), Tomaž Kastelic (Thesis defence commission member)

Abstract

Keywords

gradbeništvo;diplomska dela;UNI;kljun za narivanje;prednapetje;ležišča;prekladna konstrukcija;narivanje;teoretični model interakcije kljuna in prekladne konstrukcije;upogibni moment;

Data

Language:	Slovenian
Year of publishing:	2010
Source:	Ljubljana
Typology:	2.11 - Undergraduate Thesis
Organization:	UL FGG - Faculty of Civil and Geodetic Engineering
Publisher:	[K. Sinkovič]
UDC:	624.21(043.2)
COBISS:	5003873
Views:	3486
Downloads:	883
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	ǂThe ǂtechnology of building bridges with incremental launching method
Secondary abstract:	This Thesis describes the technology of building bridges with the launching technique, and it includes different types of launching techniques and their working equipment. Launching of heavy superstructures is described in detail. In our case that was the type of superstructure with reinforced concrete which had a box cross section. The main goal of this Thesis was to check the suitability of the chosen launching nose. In the introduction there is a brief overview of the history of building bridges. It also presents the most common techniques of building bridges, and the differences between them. The second chapter describes the difference between construction techniques of bridges with a launching method for light and heavy superstructures. Since the Thesis concentrates mainly on heavy superstructures, the following chapter describes the choice of bearings for the launching phase and the service phase in more detail as well as the possiblity of using the launching nose, temporary piers and cable – stayed front system. The next chapter describes the necessary prestressing, where the superstructure is prestressed separately for the construction phase and the service phase. In the case of launching bridges the prestressing is essential, because during construction the superstructure has to withstand a lot of load, which would not be possible without prestressing. Loads on the superstructure are enormous even in the completed form, but still smaller than in the beginning phase. The final part of Thesis describes the testing of the impact that a choice of launching nose has on the loading, particularly on the viaduct Dobruša which was built in 2008 on the highway Vrba - Peračica. First, the size of loading was determined with a theoretical model which included only the effects of its own weight, and later the software package Sofistik was used. In the second case all the impacts that actually have influence on the viaduct Dobruša have been taken into account for determining the load limit. IV
Secondary keywords:	civil engineering;graduation thesis;launching nose;prestressing;bearings;superstructure;launching a theoretical model of the nose-deck interaction;bending moment;
File type:	application/pdf
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Pages:	XI, 102 str.
Type (ePrints):	thesis
Title (ePrints):	The technology of building bridges with launching technique
Keywords (ePrints):	kljun za narivanje;prednapetje;ležišča;prekladna konstrukcija;narivanje;teoretični model interakcije kljuna in prekladne konstrukcije;upogibni moment
Keywords (ePrints, secondary language):	launching nose;prestressing;bearings;superstructure;launching;a theoretical model of the nose-deck interaction;bending moment
Abstract (ePrints):	Diplomsko delo obravnava tehnologijo gradnje mostov s tehniko narivanja in pri tem zajema različne vrste narivanja ter za njih potrebno delovno opremo. Podrobneje je opisana tehnika narivanja težkih prekladnih konstrukcij. Ta je bila v tem primeru prednapeta armiranobetonska in je imela škatlast prerez. Glavni cilj naloge je bil za računski primer preveriti ustreznost izbire kljuna za narivanje. V uvodnem delu naloge je pripravljen kratek pregled zgodovine gradnje mostov. Predstavljene so tudi najpogostejše tehnike gradnje mostov, ter razlike med njimi. V drugem poglavju je opisana razlika tehnologij gradnje z metodo narivanja za lahke in težke prekladne konstrukcije. Ker smo se v diplomi omejili na težje prekladne konstrukcije, so v nadaljevanju za take konstrukcije podrobneje opisana še izbira ležišč za fazo gradnje ter za fazo uporabe, in možnost uporabe kljuna za narivanje, začasnih podpor ter začasnega podpiranja z začasnim pilonom in poševnimi vrvmi. V naslednjem poglavju je opisano potrebno prednapetje, s katerim prednapnemo prekladno konstrukcijo posebej za fazo gradnje in za fazo uporabe. V primeru narivanja mostov je prednapetje ključnega pomena, saj je v času gradnje konstrukcija podvržena velikim obremenitvam, ki jih sam betonski prerez brez prednapete armature ne bi mogel prevzeti. Obremenitve konstrukcije so velikega velikostnega reda tudi v zgrajenem stanju, vendar so te takrat manjše kot v prvem primeru. V nadaljevanju diplomske naloge smo preizkušali, kakšen vpliv ima izbira različnega kljuna za narivanje na velikostni red obremenitev. To smo preizkušali za primer viadukta Dobruša, ki je bil zgrajen leta 2008 na avtocestnem odseku Vrba – Peračica. Velikostni red obremenitev smo najprej določevali s pomočjo teoretičnega modela, ki je zajemal samo vplive lastne teže, ter nato še s pomočjo programskega paketa Sofistik. V drugem primeru smo lahko za mejno stanje nosilnosti upoštevali vse vplive, ki dejansko obtežijo obravnavani viadukt.
Abstract (ePrints, secondary language):	This Thesis describes the technology of building bridges with the launching technique, and it includes different types of launching techniques and their working equipment. Launching of heavy superstructures is described in detail. In our case that was the type of superstructure with reinforced concrete which had a box cross section. The main goal of this Thesis was to check the suitability of the chosen launching nose. In the introduction there is a brief overview of the history of building bridges. It also presents the most common techniques of building bridges, and the differences between them. The second chapter describes the difference between construction techniques of bridges with a launching method for light and heavy superstructures. Since the Thesis concentrates mainly on heavy superstructures, the following chapter describes the choice of bearings for the launching phase and the service phase in more detail as well as the possiblity of using the launching nose, temporary piers and cable – stayed front system. The next chapter describes the necessary prestressing, where the superstructure is prestressed separately for the construction phase and the service phase. In the case of launching bridges the prestressing is essential, because during construction the superstructure has to withstand a lot of load, which would not be possible without prestressing. Loads on the superstructure are enormous even in the completed form, but still smaller than in the beginning phase. The final part of Thesis describes the testing of the impact that a choice of launching nose has on the loading, particularly on the viaduct Dobruša which was built in 2008 on the highway Vrba - Peračica. First, the size of loading was determined with a theoretical model which included only the effects of its own weight, and later the software package Sofistik was used. In the second case all the impacts that actually have influence on the viaduct Dobruša have been taken into account for determining the load limit. IV
Keywords (ePrints, secondary language):	launching nose;prestressing;bearings;superstructure;launching;a theoretical model of the nose-deck interaction;bending moment
ID:	8310745