. "0"^^ . "Bicomponent dynamic lateral pressures of granular materials with nonlinear parameters"@en . "1"^^ . . "GA103/97/0702" . "http://www.isvav.cz/projectDetail.do?rowId=GA103/97/0702"^^ . . "The principal problem of the second category of soil and rock mechanics problem and, consequently, also of a major part of more generally conceived composite materials are lateral pressures, which influence fundamentally civil engineering and other structures. No satisfactory procedures for the ' computation of dynamic pressures are known, and the knowledge for the computation of static pressures does not correspond with the significance of the problem, either. Its exacting character and the state of its solution is testified to also by the fact that the final draft of Eurocode 7 %22Geotechnical Design%22 of October, 1994, does not define soil and rock pressures at all and leaves it at the sppecialist's discretion to select adequate procedure, in spite of the fact that work on Eurocode has been going on for over 10 years, since 1981. Therefore, the proposed research will be concerned with physical modelling of artificial {man-made} granular bodies of equivalent materials with complex nonlinear behaviour"@en . "10"^^ . "10"^^ . . . . . . . . . . "Dvouslo\u017Ekov\u00E9 dynamick\u00E9 bo\u010Dn\u00ED tlaky zrnit\u00FDch materi\u00E1l\u016F s neline\u00E1rn\u00EDmi parametry" . "Z\u00E1kladn\u00EDm probl\u00E9mem druh\u00E9 kategorie \u00FAloh mechaniky hornin a tedy i \u010D\u00E1sti obecn\u011Bji pojat\u00FDch kompozitn\u00EDch materi\u00E1l\u016F, jsou horninov\u00E9 bo\u010Dn\u00ED tlaky, kter\u00E9 z\u00E1kladn\u00EDm zp\u016Fsobem ovliv\u0148uj\u00ED in\u017Een\u00FDrsk\u00E9 i jin\u00E9 konstrukce. Pro v\u00FDpo\u010Det dynamick\u00FDch tlak\u016F nejsou zn\u00E1my uspokojiv\u00E9 postupy a ani znalosti pro v\u00FDpo\u010Det horninov\u00FDch statick\u00FDch tlak\u016F nejsou odpov\u00EDdaj\u00EDc\u00ED d\u016Fle\u017Eitosti probl\u00E9mu. Jeho n\u00E1ro\u010Dnost a stav \u0159e\u0161en\u00ED dokl\u00E1d\u00E1 i to, \u017Ee kone\u010Dn\u00FD n\u00E1vrh Eurocodu 7 'Geotechnical Design' z \u0159\u00EDjna 1994 nedefinuje horninov\u00E9 tlaky v\u016Fbec anech\u00E1v\u00E1 na odborn\u00EDkovi, aby zvolil vhodn\u00FD postup. P\u0159itom pr\u00E1ce na EC7 trvaly v\u00EDce ne\u017E 10 let, cca od roku 1981. Navrhovan\u00FD v\u00FDzkum proto bude orientov\u00E1n na fyzik\u00E1ln\u00ED modelov\u00E1n\u00ED um\u011Bl\u00FDch zrnit\u00FDch t\u011Bles z ekvivalentn\u00EDch materi\u00E1l\u016F se slo\u017Eit\u00FDm neline\u00E1rn\u00EDm cho v\u00E1n\u00EDm v intervalu vlastnost\u00ED odpov\u00EDdaj\u00EDc\u00EDm zemin\u00E1m (mo\u017Enost obousm\u011Brn\u00E9 vazby v\u00FDsledk\u016F). M\u011B\u0159en\u00ED budou zalo\u017Eena na \u010Desk\u00E9m vyn\u00E1lezu dvouslo\u017Ekov\u00FDch sn\u00EDma\u010D\u016F s dynamometrick\u00FDm prstencem a tenzometrick\u00FDmi mosty, kter\u00FD umo\u017E\u0148uje pr\u016Fb\u011B\u017En\u00E9 m\u011B\u0159en\u00ED norm\u00E1lov\u00E9 i te\u010Dn\u00E9" . . . . "\u0158e\u0161en\u00ED grantu p\u0159ineslo nov\u00E9, zcela p\u016Fvodn\u00ED, poznatky z teorie bo\u010Dn\u00EDch zemn\u00EDch tlak\u016F, zejm\u00E9na o charakteru smykov\u00FDch ploch a stupni mobilizace vnit\u0159n\u00EDho t\u0159en\u00ED na t\u011Bchto ploch\u00E1ch. Z\u00E1v\u011Bre\u010Dn\u00E1 karta projektu obsahuje \u00FAdaje, kter\u00E9 odpov\u00EDdaj\u00ED v\u00FDsledk\u016Fm \u0159e\u0161en\u00ED p"@cs . "0"^^ . .