Vol.2, No 1, 1999 pp. 67-75
UDC 627.8:539.32:519.6(045)
GLOBAL ELASTIC MODULUS USAGE
FOR DIAGNOSING THE MRATINJE DAM BEHAVIOR
Veljko Marković, Svetlana Živković, Jelena Marković
Faculty of Civil Engineering and Architecture, Niš, Beogradska 14, Niš, YU
Abstract. Having in mind the attention given to the safety of large dams and the estimation of their future behavior in the last few decades, a concept of global module is developed whose aim is to evaluate the  current state of dam in a relativly simple way. Global modules are defined on the mathematical model of a dam, based on the Finite Element Method. It has to cover all assumtions from which we started while working on the model, so that it loses its initial meaning of material property and becomes a structural parameter which has its meaning only in connection with the mathematical model calibrated in terms of field measurements. The aim of the authors was to find the possibilities for the application of this method in monitoring the behavior of arch dams. The global module of elasticity is defined on the mathematical model which used the sofware ANSYS, while the measurements of radial movements on the dam carried out as a part of regular dam monitoring are taken as the results of monitoing.
KORIŠĆENJE GLOBALNOG MODULA ELASTIČNOSTI
ZA DIJAGNOSTIKU PONAŠANJA BRANE MRATINJE
Koncept globalnog modula elastičnosti je razvijen u poslednjih nekoliko decenija sa namerom da se usavrši i pojednostavi praćenje i prognoza budućeg ponašanja viskokih brana.
Globalni modul se definiše na matematičkom modelu brane za čije numeričko određivanje je korišćen metod konačnih elemenata. On pokriva polazne pretpostavke modela tako da gubi svoje osnovno značenje mehaničke karakteristike materijala i postaje strukturni parametar, koji ima smisla samo u sadejstvu sa matematičkim modelom koji se kalibrira uz pomoć izmerenih podataka.
Cilj autora je bio da se pronađu mogućnosti primene ovog metoda u oblasti osmatranja viskokih lučnih brana. Globalni modul elastičnosti je definisan uz pomoć programskog paketa ANSYS, dok su merenja radijalnih pomeranja deo redovnog godišnjeg osmatranja brane Mratinje.