Tlačna in upogibna nosilnost polnostenskih nosilcev, ojačanih z vzdolžnimi ojačitvami

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Language:	Slovenian
Year of publishing:	2007
Source:	Ljubljana
Typology:	2.11 - Undergraduate Thesis
Organization:	UL FGG - Faculty of Civil and Geodetic Engineering
Publisher:	[N. Aleksić]
UDC:	624.014.2:624.073.8(043.2)
COBISS:	3613793
Views:	1834
Downloads:	435
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Secondary language:	English
Secondary title:	Compression and bending resistance of longitudinally stiffened plate girders
Secondary abstract:	This thesis deals with the resistance of plate girders stiffened with one sided rectangular longitudinal stiffeners under compression and bending, determined according to the rules given in EN 1993-1-5. It presents the rules for determination of plate buckling effects due to direct stresses. Compression and bending resistance was calculated for a wide range of cross sections, using the computer program EXCEL, and the effects of different parameters were studied. The parameters investigated were: the location of the stiffener, the slenderness of the plate, the plate aspect ratio, the stiffener to plate area ratio, the flange to web area ratio, the steel grade and the web height. Separate calculations were made for three different cases: I-girder stiffened with one or two longitudinal stiffeners under bending and plate stiffened with n longitudinal stiffeners under compression. In EN 1993-1-5 the effects of plate buckling are taken into account by effective cross sectional areas, determined by reduction factors which depend on elastic critical buckling stresses. Calculation of critical stresses is based on simplified models which may have limited applicability. Elastic critical buckling stresses were calculated more accurately by using computer program EBPlate (energy method). In addition to the comparison of critical stresses we were interested in the effect that the different critical stresses have on the section resistance. Therefore, the critical plate buckling stress in the expressions given by EN 1993-1-5 was replaced by critical stresses from EBPlate calculation. The comparison of the results of both methods of calculation showed that the differences in critical stresses were differently reflected in the results for section resistance.
Secondary keywords:	steel structures;plate girders;longitudinal stiffeners;plate buckling;
File type:	application/pdf
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Pages:	XVIII, 109 str.
Type (ePrints):	thesis
Title (ePrints):	Tlačna in upogibna nosilnost polnostenskih nosilcev, ojačanih z vzdolžnimi ojačitvami
Keywords (ePrints):	gradbeništvo;diplomska dela;UNI;jeklene konstrukcije;polnostenski nosilci;vzdolžne ojačitve;izbočenje pločevine;
Keywords (ePrints, secondary language):	steel structures;plate girders;longitudinal stiffeners;plate buckling;
Keywords (ePrints, secondary language):	steel structures;plate girders;longitudinal stiffeners;plate buckling;
ID:	8310157