%0 Journal Article
%T Dependence of Strength Enhacement on Shock Front Overpressure: The Case of RC Structures Gel betonini  konstrukcij  sl gimo bangos vir sl gio ir stiprio did jimo priklausomyb
%A Virmantas Juocevi£¿ius
%J Science ¨C Future of Lithuania
%D 2009
%I Vilnius Gediminas Technical University
%R 10.3846/184
%X The paper considers problems related to the assessment of the effect of loading rate on mechanical properties of concrete and reinforcing steel. The attention is focused on the evaluation of varying straining rate of RC structure subjected to explosive loading. The key problem considered in the paper is the derivation of the relation between the rate of pressure increase and incident overpressure. The paper considers approaches to modelling the influence of straining rate on mechanical properties of concrete and reinforcing steel. The main conclusion following from the paper is that the deterministic models used for the assessment of effect of straining rate on the mechanical properties of concrete and reinforcing steel and models used for modelling of incident overpressure are fairly imprecise and require for the stochastic modelling of this phenomena.  Article in English Straipsnyje analizuojama apkrovimo grei io betono ir armat¨±ros mechanin ms fizikin ms savyb ms  taka. Daugiausia d mesio skiriama gel betoninei konstrukcijai, veikiamai sprogimo bangos sukelto sl gio, betono ir armat¨±ros, deformacij , grei iui nustatyti. Straipsnyje pasi¨±lyta apkrovimo grei io priklausomyb  nuo krentan ios sprogimo bangos vir sl gio. Analizuojami deformacij  grei io  takos betono ir armat¨±ros mechanin ms ir fizikin ms savyb ms vertinimo metodai, deterministini  metod , naudojam  deformacij  grei io  takai vertinti, betono, armat¨±ros dinamini  ir mechanini  savybi  netikslumai. Si¨±loma konstrukcij , veikiam  sprogimo apkrovos, dinamin ms mechanin ms fizikin ms charakteristikoms nustatyti naudoti tikimybin  modeliavim   vertinant atsitiktinius ir episteminius neapibr  tumus.  Straipsnis angl  kalba
%K loading rate
%K strain rate
%K incident overpressure
%K shock front
%U http://www.mla.vgtu.lt/index.php/mla/article/view/184