. "30"^^ . . "30"^^ . . "Alternative Description of Effects of Fatigue on Concrete Structures"@en . " set" . " material" . . . " fuzzy" . "2010-01-01+01:00"^^ . "http://www.isvav.cz/projectDetail.do?rowId=GAP105/10/2098"^^ . "Alternativn\u00ED popis \u00FA\u010Dink\u016F \u00FAnavy na betonov\u00E9 konstrukce" . . . "Within the framework of this project a material model of fatigue of concrete with the effect of harsh environment was developed. The model which was defined by fuzzy logic combines the effect of cyclic loading, chloride contamination and freeze-thawing. The results of the project were published in proceedings of international conferences and journals."@en . "fatigue" . . . "Reinforced and pre-stressed concrete bridges are subjected not only to fatigue load, but also to the impact of corrosive environment. The combination of these effects may influence durability of such structures significantly. This is the reason why material models used in realistic finite element analyses should reflect both of these effects. While the fatigue behavior of steel has already been studied and is well known, the fatigue of concrete and the influence of fatigue on the bond between steel and concrete still need more attention. The objective of this project is to develop a robust material model of concrete and interfacial bond which can be used in fatigue finite element analyses. The model will be based on fuzzy logic so that the knowledge of material engineers, besides the experimental data, could be also included. Also, an image-processing-based system for investigation and monitoring of damage initiation and propagation will be developed. It is believed that the outcome of the project will help to determine the durability of RC structures more precisely."@en . " modeling" . . "2012-03-30+02:00"^^ . "0"^^ . . " assessment" . . "fatigue; concrete; material; modeling; reliability; assessment; fuzzy; set; theory"@en . "1"^^ . . " concrete" . "0"^^ . " reliability" . . . "GAP105/10/2098" . . "2012-12-31+01:00"^^ . "V r\u00E1mci projektu byl sestaven materi\u00E1lov\u00FD model, kter\u00FD umo\u017E\u0148uje odhad zbytkov\u00E9 \u017Eivotnosti betonov\u00FDch konstrukc\u00ED. Tento model, kter\u00FD byl definov\u00E1n pomoc\u00ED fuzzy logiky, uva\u017Euje vlivy cyklick\u00E9ho zat\u011B\u017Eov\u00E1n\u00ED, chlorid\u016F a zmrazovac\u00EDch cykl\u016F. V\u00FDsledky projektu byly publikov\u00E1ny na mezin\u00E1rodn\u00EDch konferenc\u00EDch a v \u010Dasopisech."@cs . . . "\u017Delezobetonov\u00E9 a p\u0159edpjat\u00E9 mosty jsou krom\u011B \u00FA\u010Dinku cyklick\u00E9ho zat\u00ED\u017Een\u00ED vystavov\u00E1ny tak\u00E9 korozivn\u00EDmu prost\u0159ed\u00ED, p\u0159i\u010Dem\u017E kombinace t\u011Bchto \u00FA\u010Dink\u016F m\u016F\u017Ee v\u00FDznamn\u011B ovlivnit \u017Eivotnost takov\u00FDch konstrukc\u00ED. Proto by materi\u00E1lov\u00E9 modely pou\u017E\u00EDvan\u00E9 v kone\u010Dn\u011Bprvkov\u00FDch anal\u00FDz\u00E1ch m\u011Bly zohled\u0148ovat oba tyto \u00FA\u010Dinky co nejv\u011Brohodn\u011Bji. Zat\u00EDmco \u00FAnava ocelov\u00E9 v\u00FDztu\u017Ee ji\u017E byla dostate\u010Dn\u011B prozkoum\u00E1na, \u00FAnava betonu a vliv cyklick\u00E9ho zat\u00ED\u017Een\u00ED na soudr\u017Enost, zvl\u00E1\u0161t\u011B v r\u016Fzn\u011B intenzivn\u00EDch korozivn\u00EDch prost\u0159ed\u00EDch, st\u00E1le vy\u017Eaduje pozornost. C\u00EDlem tohoto projektu je vyvinout robustn\u00ED materi\u00E1lov\u00FD model betonu a soudr\u017Enosti betonu s v\u00FDztu\u017E\u00ED, kter\u00FD bude pou\u017Eiteln\u00FD v kone\u010Dn\u011Bprvkov\u00FDch anal\u00FDz\u00E1ch vlivu \u00FAnavy na \u017Eelezobetonov\u00E9 konstrukce. Model bude zalo\u017Een na fuzzy logice, \u010D\u00EDm\u017E do n\u011Bj bude mo\u017En\u00E9 snadno vkl\u00E1dat, krom\u011B experiment\u00E1ln\u00EDch m\u011B\u0159en\u00ED, i znalosti materi\u00E1lov\u00FDch in\u017Een\u00FDr\u016F. D\u00E1le budou vytvo\u0159eny podp\u016Frn\u00E9 n\u00E1stroje pro m\u011B\u0159en\u00ED a monitorov\u00E1n\u00ED vzniku a \u0161\u00ED\u0159en\u00ED po\u0161kozen\u00ED v materi\u00E1lech. V\u00FDstupy tohoto projektu napomohou p\u0159esn\u011Bj\u0161\u00EDmu stanoven\u00ED \u017Eivotnosti \u017Eelezobetonov\u00FDch konstrukc\u00ED." . "2014-01-30+01:00"^^ . . .