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Title:REOLOGIJA JEKLENO - BETONSKIH SOVPREŽNIH MOSTOV
Authors:Peternelj, Mihael (Author)
Kravanja, Stojan (Mentor) More about this mentor... New window
Kuhta, Milan (Co-mentor)
Janjic, Dorian (Co-mentor)
Files:.pdf UNI_Peternelj_Mihael_2009.pdf (5,56 MB)
MD5: 1A35FB8749E20175DF1CA611493EE69F
 
Language:Slovenian
Work type:Undergraduate thesis (m5)
Organization:FGPA - Faculty of Civil Engineering, Transportation Engineering and Architecture
Abstract:Osnovni namen diplomske naloge je predstaviti reološke vplive betona na sovprežno konstrukcijo (kot njen sestavni material). V nadaljevanju bomo predstavili numerične postopke za izračun teh vplivov, ter rešili dva primera. Prvi poenostavljen primer, ki detajlno opisuje postopek in drugi (bolj zahteven) primer s pomočjo programskega paketa RM Bridge, ki velja za enega najboljših programskih paketov za računsko analizo mostov. Diplomsko delo je sestavljeno iz dveh delov: teoretičnega in računskega dela. V prvem delu je predstavljena teorija, pristop in formule, ki omogočajo natančno določanje reoloških vplivov betona na sovprežno konstrukcijo kot njen sestavni element. Drugi del je v grobem sestavljen iz dveh računskih primerov. Prvi računski primer je enostaven sovprežni nosilec podprt z dvema elastičnima podporama in služi zgolj v demonstativne namene, ter detajlno prikazuje računski postopek analize konstrukcije. Primer je bil rešen ročno in rezultati računske analize konstrukcije primerjani z tistimi dobljenimi s pomočjo programskega paketa RM Bridge. Drugi primer bolje ustreza realiteti. V drugem primeru je izračunan sovprežni most z tremi razponi dolžine 40 m - 60 m - 40 m. Tak sovprežni most ustreza kakšnemu podobnemu mostu v praksi, zato se rezultati njegove računske analize lahko primerjajo na realni osnovi. Na podlagi rezultatov drugega primera lahko sklepamo, da je časovno odvisne materialne in reološke karakteristike betona, kot sestavnega materiala sovprežne konstrukcije, potrebno vedno upoštevati.
Keywords:reologija, sovprežni mostovi, jeklo, beton, lezenje, krčenje, relaksacija, CEB–FIP 1990, metoda končnih elementov, računska analiza konstrukcij
Year of publishing:2009
Publisher:[M. Peternelj]
Source:Maribor
UDC:666.97.035:035:624.21(043.2)
COBISS_ID:13698326 New window
NUK URN:URN:SI:UM:DK:HCCLSXUL
Views:2720
Downloads:280
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Categories:KTFMB - FG
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Secondary language

Language:English
Title:RHEOLOGY OF STEEL - CONCRETE COMPOSITE BRIDGES
Abstract:The main purpose of this diploma work is to discuss the time dependant effects of concrete as a component material of the composite construction and their influence. In addition numerical solutions for calculating creep and shrinkage effects will be presented and two examples solved, one simpler with detailed description and one more difficult using the leading software package RM Bridge for modelling bridges. This work is divided into two parts: theoretical part and calculation part. In the first part theory, methodology and formulas that enable precise prediction of concrete time dependant parameters on the composite construction as a part of it. The second part of this work consists of two examples. First example is a very simplified composite beam held up by two elastic supports. The main purpose of this much simplified example is for demonstration purposes only. It was calculated manually with detailed description and the results of structural analysis compared to those gained with help of software package RM Bridge. Second example tends to be more realistic. In this case we have a three span 40 m – 60 m – 40 m steel — concrete composite bridge. Such bridge corresponds to an average composite bridge in reality and therefore the results of structural analysis can be evaluated on real ground basis. Based on the results of the second example we can conclude that time dependent effects of concrete as a material used in composite constructions always have to be considered.
Keywords:rheology, composite bridges, steel, concrete, creep, shrinkage, relaxation, CEB–FIP 1990, finite elements method, structural analysis


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