Projektiranje betonskih konstrukcij s pomočjo modela z vezmi in razporami

diplomska naloga

Miha Pirih (Avtor), Jože Lopatič (Mentor), Bojan Majes (Član komisije za zagovor), Franc Saje (Član komisije za zagovor)

Povzetek

Ključne besede

gradbeništvo;diplomska dela;UNI;razpore;vezi;vozlišča;palični mehanizem;območja diskontinuitet;stenasti nosilci;

Podatki

Jezik:	Slovenski jezik
Leto izida:	2010
Izvor:	Ljubljana
Tipologija:	2.11 - Diplomsko delo
Organizacija:	UL FGG - Fakulteta za gradbeništvo in geodezijo
Založnik:	[M. Pirih]
UDK:	624.012.4(043.2)
COBISS:	5062241
Št. ogledov:	2464
Št. prenosov:	785
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Angleški jezik
Sekundarni naslov:	Design of concrete structures using the strut and tie model
Sekundarni povzetek:	My diploma focuses on deep beam dimensioning according to strut and tie model which is based on truss analogy. The model of strut and tie in detail describes struts, ties and nodes, introduces the instructions on mechanism design and checking according to SIST EN 1992-1-1: General rules and rules for buildings. Load-related stress distribution along the cross-section, which is obtained from linear elastic analysis and by using “Sofistik” software, is set as a tool for dimensioning crucial strut and ties joined in nodes. When an element bears the uniform distributed load, it is much harder to design a mechanism which would most accurately describe the deformation nature of construction than in the case of point load where the truss mechanism tends to stand out the moste when considering stress distribution along the cross-section to the support or area outside “D (discontinuity/disturbed) – regions”, resulting in computational examples displaying uniform distributed load. Deep beams with this kind of load distribution supported by numerous experiments call for the truss mechanism of trapezoid shapes with stabilization elements which are not displayed in most cases and this is mainly so because they are not crucial, but only used to reach the state of static determinacy of truss mechanism. Further on the two ways of mechanism design are presented in which case we choose the one with the truss altitude that comes closest possible to Leonhardt and/or Sofistik lever arm as well as to the reinforcement length left and right from intermediate support based on bending moment line and according to Leonhardt’s recommendations. The process is introduced with emphasis on detail and supported by equations from three computational examples.
Sekundarne ključne besede:	civil engineering;graduation thesis;strut;tie;node;truss mechanism;discontinuity/disturbed areas;deep beam;
Vrsta datoteke:	application/pdf
Vrsta dela (COBISS):	Diplomsko delo
Komentar na gradivo:	Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Strani:	XIV, 113 str., [93] str. pril.
Vrsta dela (ePrints):	thesis
Naslov (ePrints):	Design of concrete structures using the strut and tie model
Ključne besede (ePrints):	razpore;vezi;vozlišča;palični mehanizem;območja diskontinuitet;stenasti nosilci
Ključne besede (ePrints, sekundarni jezik):	strut;tie;node;truss mechanism;discontinuity/disturbed areas;deep beam
Povzetek (ePrints):	V nalogi obravnavam dimenzioniranje stenastih nosilcev z modelom z vezmi in razporami, ki temelji na analogiji paličja. Oblikovanje modela je detajlno predstavljeno z opisi razpor, vezi in z vozlišči, s pravili tvorjenja paličnega mehanizma ter merodajnimi kontrolami, ki jih določa SIST EN 1992-1-1: Splošna pravila in pravila za stavbe. Obremenitvi pripadajoč potek napetosti po prerezu, dobljen z linearno elastično analizo, s programskim paketom »Sofistik«, uporabim za formiranje in dimenzioniranje merodajnih razpor in vezi, ki se stikujejo v vozliščih. Kadar je element obremenjen z linijsko obtežbo, je veliko težje izdelati mehanizem, ki čim bolje opisuje naravo odziva konstrukcije, kot pa v primeru točkovne obtežbe, kjer je mehanizem prenosa obtežbe največkrat očiten glede na potek napetosti po prerezu do podpor oziroma v območje elementa izven »D – območij«, zato so elementi v računskih primeri obremenjeni z zvezno linijsko obtežbo. Pri tako obremenjenem elementu je najprimernejši mehanizem prenosa obtežbe, kot kažejo tudi številni eksperimenti trapezne oblike s stabilizacijskimi diagonalami, le-te pa v večini primerov niso prikazane saj za dimenzioniranje niso merodajne, vendar pa so potrebne za doseganje statične določenosti paličnega mehanizma. V nadaljevanju sta predstavljena dva načina tvorjenja mehanizma, kjer je izbran tisti, ki se z višino paličja čim bolje približa Leonhardtovi in/ali Sofistikovi ročici ter dolžini armiranja levo in desno od vmesne podpore glede na momentno linijo in priporočili Leonhardta. Postopek je detajlno prikazan in z enačbami konkretiziran na šestih računskih primerih. IV
Povzetek (ePrints, sekundarni jezik):	My diploma focuses on deep beam dimensioning according to strut and tie model which is based on truss analogy. The model of strut and tie in detail describes struts, ties and nodes, introduces the instructions on mechanism design and checking according to SIST EN 1992-1-1: General rules and rules for buildings. Load-related stress distribution along the cross-section, which is obtained from linear elastic analysis and by using “Sofistik” software, is set as a tool for dimensioning crucial strut and ties joined in nodes. When an element bears the uniform distributed load, it is much harder to design a mechanism which would most accurately describe the deformation nature of construction than in the case of point load where the truss mechanism tends to stand out the moste when considering stress distribution along the cross-section to the support or area outside “D (discontinuity/disturbed) – regions”, resulting in computational examples displaying uniform distributed load. Deep beams with this kind of load distribution supported by numerous experiments call for the truss mechanism of trapezoid shapes with stabilization elements which are not displayed in most cases and this is mainly so because they are not crucial, but only used to reach the state of static determinacy of truss mechanism. Further on the two ways of mechanism design are presented in which case we choose the one with the truss altitude that comes closest possible to Leonhardt and/or Sofistik lever arm as well as to the reinforcement length left and right from intermediate support based on bending moment line and according to Leonhardt’s recommendations. The process is introduced with emphasis on detail and supported by equations from three computational examples.
Ključne besede (ePrints, sekundarni jezik):	strut;tie;node;truss mechanism;discontinuity/disturbed areas;deep beam
ID:	8308990