diplomska naloga
Rok Stenko (Author), Jože Korelc (Mentor), Janko Logar (Thesis defence commission member), Jože Lopatič (Thesis defence commission member), Vlado Stankovski (Thesis defence commission member), Franc Sinur (Co-mentor)

Abstract

V diplomski nalogi smo obravnavali obnašanje polnostenskih nosilcev. Polnostenski nosilci so sestavljeni iz kompaktnih pasnic in vitke stojine, ki je običajno ojačena z vzdolžnimi in prečnimi ojačitvami. Osredotočili smo se na iskanje potrebne togosti prečne ojačitve, ki mora nuditi ustrezno podporo pločevini. V prvem delu diplomske naloge so predstavljena pravila za dimenzioniranje polnostenskih nosilcev, ki jih navaja standard EN-1993-1-5, v nadaljevanju pa sledijo rezultati numeričnih simulacij, ki so bili izvedeni v programu Abaqus, s katerimi smo želeli pokazati primernost izrazov za določitev togosti. V primeru vzdolžno ojačene in neojačene pločevine v čistem tlaku, smo za izračun potrebne togosti izhajali iz izrazov, ki jih predlaga standard EN-1993-1-5. Izkazalo se je, da pogoj pomika ni vedno izpolnjen, zato smo predlagali nov način določitve ustrezne togosti prečne ojačitve, s katerim smo dobili zadovoljive rezultate. Pri vzdolžno ojačeni pločevini v čistem strigu smo za izračun prečne ojačitve uporabili enačbe, ki so bile razvite za neojačene pločevine v čistem strigu. Te enačbe so se izkazale kot ustrezne tudi za primer ojačene pločevine.

Keywords

gradbeništvo;diplomska naloga;UNI;jeklene konstrukcije;polnostenski nosilci;izbočenje pločevin;vitke pločevine;nepopolnosti;togost;vzdolžne ojačitve;čisti tlak;strig;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FGG - Faculty of Civil and Geodetic Engineering
Publisher: [R. Stenko]
UDC: 624.072.2(043.2)
COBISS: 6664033 Link will open in a new window
Views: 3085
Downloads: 472
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: Stiffness requirements for transverse stiffeners in plate girders
Secondary abstract: This thesis deals with the behavior of plated girders, composed of compact flanges and slender webs, which are usually stiffened with longitudinal and transversal stiffeners. The main goal was to analyze transversal stiffeners, which have to provide a rigid support for the base plate. The first part of the thesis overviews the design rules for plate girders, which are included in the standard EN 1993-1-5. Numerical results from the finite element analysis are shown in the second part. Numerical simulations were performed to confirm or disprove the existing equation for the evaluation of stiffness. For longitudinally stiffened and unstiffened plates in compression the expressions from standard EN-1993-1-5 were used. It was shown, that the deflection criterion is not satisfied in all cases. A new design rule, which ensure the proper stiffness of the transversal stiffeners, was suggested. For longitudinally stiffened plates in shear solutions developed for unstiffened plates in shear were used. These equations yield a good approximation.
Secondary keywords: steel structures;plate girders;plate buckling;slender plates;type of imperfection;stiffness;longitudinal stiffeners;transverse stiffeners;direct stresses;shear;
File type: application/pdf
Type (COBISS): Undergraduate thesis
Thesis comment: Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Pages: XVI, 97 str.
Type (ePrints): thesis
ID: 8327216