Prekladna konstrukcija mostu na avtocesti

Povzetek

Ključne besede

Podatki

Jezik:	Slovenski jezik
Leto izida:	2006
Izvor:	Ljubljana
Tipologija:	2.11 - Diplomsko delo
Organizacija:	UL FGG - Fakulteta za gradbeništvo in geodezijo
Založnik:	[D. Frelih]
UDK:	624.012.46:624.21(043.2)
COBISS:	3014753
Št. ogledov:	3129
Št. prenosov:	701
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Angleški jezik
Sekundarni naslov:	Deck Construction of Highway Bridge
Sekundarni povzetek:	The present work focuses on deck construction of a highway bridge. Deck construction is designed as continued box girder with constant height. The deck construction is built by incremental launching. In launching phase launch prestressing with permanent internal straight tendons is applied in the upper and lower plate of the box girder for reducing stresses. On completion of launch, the service prestressing with internal parabolic tendons is used. In the beginning bridge launching and its advantages are described. In continuing work focuses on European standard prEN 1991 – 2 for traffic loads on bridges, where different load model and its application on structure are defined. There are also given characteristic values of traffic loads. In the next capture the usage of tree different computational models are explained. First model was used for calculating the internal forces in the deck construction during launching phases. It was designed using plane frame finite elements. Second model was used for the determination of internal forces in transverse direction of the bridge box girder. In this model shell finite elements were used. Third model is intended for determination of internal forces in longitudinal direction and it was designed as space frame construction. The analysis of deck construction consists of two parts. In the first part the analysis of deck construction in launching phase is made. Moment envelopes were calculated and the prestressing force for internal straight tendons was defined. Second part analyses the deck construction under service loads. There are given loads on deck construction and the internal forces for transverse and longitudinal direction of the bridge box girder are analysed. In continuing of the work the reinforcement and construction planes are designed. IV
Sekundarne ključne besede:	bridges;prestressed concrete;design;bridge launching;traffic load;european standards;
Vrsta datoteke:	application/pdf
Vrsta dela (COBISS):	Diplomsko delo
Komentar na gradivo:	Univ. Ljubljana, Fakulteta za gradbeništvo in geodezijo, Oddelek za gradbeništvo, Univerzitetni študij, Konstrukcijska smer
Strani:	IX, 96 str.
Vrsta dela (ePrints):	thesis
Naslov (ePrints):	Prekladna konstrukcija mostu na avtocesti
Ključne besede (ePrints):	mostovi;prednapeti beton;dimenzioniranje;tehnologija postopnega narivanja;prometna obtežba;evropski standardi
Ključne besede (ePrints, sekundarni jezik):	bridges;prestressed concrete;design;bridge launching;traffic load;european standards
Povzetek (ePrints):	Diplomsko delo obravnava račun prekladne konstrukcije mostu na avtocesti. Prekladna konstrukcija je neprekinjen nosilec škatlastega prereza konstantne višine in je zgrajena po tehnologiji postopnega narivanja. Na konstrukciji je uporabljeno prednapetje z ravnimi kabli v zgornji in spodnji plošči za prevzem obremenitev času gradnje in dodatno prednapetje s paraboličnimi kabli za prevzem obremenitev v času uporabe. Na začetku naloge je na kratko opisana tehnologija postopnega narivanja ter njene prednosti. Sledi obravnava prometne obtežbe za cestne mostove po evropskem standardu prEN 1991-2, kjer so opisani uporaba različnih obtežnih modelov, načini postavitve obtežnih modelov na konstrukcijo ter karakteristične vrednosti prometne obtežbe. V nadaljevanju so opisani računski modeli, ki so bili uporabljeni za različne faze, v katerih se prekladna konstrukcija tekom gradnje in uporabe nahaja. Prvi model obravnava fazo narivanja. Je skupek 33 modelov, ki predstavljajo postopnost gradnje. Ta model je zasnovan kot ravninski linijski končni element. Naslednji model je namenjen izračunu obremenitev škatlastega prereza v prečni smeri. Sestavljen je iz končnih elementov za lupine. Tretji model je bil sestavljen kot linijski končni element in služi izračunu notranjih sil v vzdolžni smeri. Analiza prekladne konstrukcije je sestavljena iz dveh delov. Prvi del računa obravnava konstrukcijo v času gradnje. Izračunane so bile ovojnice momentov v času gradnje na podlagi katerih je določena sila prednapetja v zgornji in spodnji plošči škatlastega nosilca. Drugi del analize obravnava konstrukcijo v času uporabe. Podane so obtežbe na konstrukcijo v prečni in vzdolžni smeri ter na ločenih računskih modelih določene obremenitve za prečno in vzdolžno smer. Sledi dimenzioniranje prekladne konstrukcije in armaturni oziroma konstrukcijski načrti.
Povzetek (ePrints, sekundarni jezik):	The present work focuses on deck construction of a highway bridge. Deck construction is designed as continued box girder with constant height. The deck construction is built by incremental launching. In launching phase launch prestressing with permanent internal straight tendons is applied in the upper and lower plate of the box girder for reducing stresses. On completion of launch, the service prestressing with internal parabolic tendons is used. In the beginning bridge launching and its advantages are described. In continuing work focuses on European standard prEN 1991 – 2 for traffic loads on bridges, where different load model and its application on structure are defined. There are also given characteristic values of traffic loads. In the next capture the usage of tree different computational models are explained. First model was used for calculating the internal forces in the deck construction during launching phases. It was designed using plane frame finite elements. Second model was used for the determination of internal forces in transverse direction of the bridge box girder. In this model shell finite elements were used. Third model is intended for determination of internal forces in longitudinal direction and it was designed as space frame construction. The analysis of deck construction consists of two parts. In the first part the analysis of deck construction in launching phase is made. Moment envelopes were calculated and the prestressing force for internal straight tendons was defined. Second part analyses the deck construction under service loads. There are given loads on deck construction and the internal forces for transverse and longitudinal direction of the bridge box girder are analysed. In continuing of the work the reinforcement and construction planes are designed. IV
Ključne besede (ePrints, sekundarni jezik):	bridges;prestressed concrete;design;bridge launching;traffic load;european standards
ID:	8309070