Vol.11, No 1, 2013 pp. 1 - 12
UDC
624.04:519.673:624.072.22=111
DOI: 10.2298/FUACE1301001S
AUTOMATIC GENERATION OF PLANAR
RC STRUT-AND-TIE MODELS
Anka Starčev-Ćurčin, Andrija Rašeta, Zoran Brujić
University of Novi Sad, Faculty of Technical Sciences, Serbia
E-mail: astarcev@uns.ac.rs
This paper presents a proposal for determining Strut-and-Tie models of reinforced concrete plane elements. For the purposes of analysis, a computer program was developed and a discrete topological optimization was applied, using a truss member for the design of the stress-strain state of the real member. The method can be used for the analysis of a part or a whole member and it is particularly suitable for the usage in the places of sudden changes of static and/or geometric characteristics of members. The general principle of the method is that compressed members replace concrete parts of the element (surface or volume) and tension members replace the reinforcement.
Key words:
FEM, optimization, Strut-and-Tie model, truss member.
AUTOMATSKO GENERISANJE ARMIRANOBETONSKIH RAVANSKIH STRUT-AND-TIE MODELA
U ovom radu dat je predlog za određivanje Strut-and-Tie modela armiranobetonskih elemenata u ravni. Za potrebe analiza razvijen je program "ST metod", a primenjena je diskretna topološka optimizacija koja koristi rešetkasti nosač za proračun naponsko-deformacijskog stanja stvarnog nosača. Metoda može da se koristi za analizu dela ili celog nosača, a posebno je pogodna za primenu na mestima nagle promene statičkih veličina i/ili geometrijskih karakteristika nosača. Generalni princip metode je da se pritisnutim štapovima zamenjuju betonski delovi (površine ili zapremine) armiranobetonskog elementa, a da se zategnutim štapovima zamenjuje armatura.
Ključne reči:
MKE, optimizacija, Strut-and-Tie metod, rešetkasti nosač
