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Račun pomikov armiranobetonskih nosilcev : diplomska naloga
ID Kralj, Urban (Author), ID Lopatič, Jože (Mentor) More about this mentor... This link opens in a new window

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MD5: BC0C6C642A5E79F3F07F9A54B09A8E06
PID: 20.500.12556/rul/371c0f55-6509-4bf7-a800-037203e3574a

Abstract
V diplomski nalogi je predstavljen račun pomikov armiranobetonskih nosilcev. Opisani so dejavniki za nastanek pomikov, ki lahko na različne načine poškodujejo ali onemogočijo funkcijo konstrukcije. Reologija betona zajema vplive nastanka deformacij zaradi krčenja in lezenja, kar upoštevamo pri redukciji materialnih parametrov. Velik poudarek je posvečen tudi vplivu razpokanosti armiranobetonskega prereza na zmanjšanje togosti konstrukcije in posledično večjih deformacij. Navedeni so najpogostejši kriteriji in problemi zaradi prevelikih pomikov armiranobetonskih konstrukcij. S pomočjo izdelanega programa v Excelovi preglednici za izračun pomikov kontinuirnih nosilcev je opisan postopek računanja pomikov, poenostavitve v računu in natančnost izračunanih velikosti pomikov. Standard SIST EN 1992-1-1 podaja tudi razmerja med statično višino in razpetino kjer račun pomikov sploh ni potreben. S pomočjo programa je v diplomskem delu prikazanih nekaj izračunanih primerov, kjer so opisane odvisnosti in vplivi parametrov na velikost pomikov v armiranobetonskih kontinuirnih nosilcih.

Language:Slovenian
Keywords:gradbeništvo, diplomska dela, račun pomikov, armiranobetonski nosilci, kontinuirni nosilci, mejno stanje pomikov, pomik
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FGG - Faculty of Civil and Geodetic Engineering
Place of publishing:Ljubljana
Publisher:[U. Kralj]
Year:2015
Number of pages:X, 35 str.
PID:20.500.12556/RUL-72790 This link opens in a new window
COBISS.SI-ID:7250529 This link opens in a new window
Publication date in RUL:01.10.2015
Views:2701
Downloads:404
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Secondary language

Language:English
Title:Calculation of deflections of reinforced concrete beams
Abstract:
In the thesis we present the calculation of deflections of reinforced concrete beams. We describe the factors that cause the deflections. These deflections can damage or disable the function of the construction in different ways. Rheology of concrete includes the influence of formation of deformations, due to shrinkage and creep. We take this into account with reduction of material parameters. We also emphasize the influence of cracking of reinforced concrete sections. The cracking influences the reduction of bending stiffness of the construction and consequently increased deformation. We present the most common criteria and problems which occur due to too much deflection of reinforced concrete constructions. With the help of self-made Excel program which computes the deflections of continious beams, we describe the procedure of calculating the deflections, simplification of the computation and accuracy of the computed deflection values. Standard SIST EN 1992-1-1 gives the ratios between static height and span where deflection computation is not even required. With the help of the preapared program we show some computation examples, where we describe the dependencies and influence of the parameters on the deflections in reinforced concrete continious beams.

Keywords:civil engineering, graduation thesis, calculation of deflections, reinforced concrete beams, continious beams, limit state of deflection, deflection

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