diplomska naloga
Urban Kralj (Author), Jože Lopatič (Mentor), Janko Logar (Thesis defence commission member)

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.

Keywords

gradbeništvo;diplomska dela;račun pomikov;armiranobetonski nosilci;kontinuirni nosilci;mejno stanje pomikov;pomik;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FGG - Faculty of Civil and Geodetic Engineering
Publisher: [U. Kralj]
UDC: 624.012.45:624.046.4(497.4)(043.2)
COBISS: 7250529 Link will open in a new window
Views: 1889
Downloads: 381
Average score: 0 (0 votes)
Metadata: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Other data

Secondary language: English
Secondary title: Calculation of deflections of reinforced concrete beams
Secondary 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.
Secondary keywords: civil engineering;graduation thesis;calculation of deflections;reinforced concrete beams;continious beams;limit state of deflection;deflection;
File type: application/pdf
Type (COBISS): Bachelor thesis/paper
Thesis comment: Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Pages: X, 35 str.
ID: 9056126