"1"^^ . . . . "http://www.isvav.cz/projectDetail.do?rowId=GP103/08/P613"^^ . " prestressing" . "0"^^ . " creep" . "0"^^ . . "2010-04-16+02:00"^^ . "Prestressed concrete bridges are very sensitive to long-term increase of deflections. The cost of reduced service life of such bridges is tremendous for society, the owners and users. Reliable prediction of bridge deflections during their construction as well as during their service life is of crucial importance for achieving good durability and long-term serviceability. The excessive and with ti"@en . . "Nov\u00E9 metody reologick\u00E9ho \u0159e\u0161en\u00ED prostorov\u011B p\u016Fsob\u00EDc\u00EDch p\u0159edpjat\u00FDch betonov\u00FDch most\u016F velk\u00FDch rozp\u011Bt\u00ED" . . "2015-03-20+01:00"^^ . . "With the development necessities on fidelity static analysis more and more exerts need to create new computation tool for reliable assesment of stress distribution in spatially applied bridge constructions and also for deformation prediction, of course in time development, with changing of static system, everything for project practice without necessity to spend high sums for complicated computer programs. Evolution methods of solution based on 3D models in combination with new computation tool supplemented by automatic optimisation of prestressing. Established methods will be calibrated by comparison with the records of metering on real bridge structures. Program applications for solving effects of creep and shrinkage and for design of prestressing to avoid excessive deflections will be also a part of project output. Part of project will be also to create the set of recommendation for computation analysis-creation of the real static model, correct take into account rheology effects of"@en . . . "2010-12-31+01:00"^^ . . . "New methods of rheology analysis based on 3D structural models for long-span prestressed concrete bridges"@en . "Jedn\u00EDm z nejz\u00E1va\u017En\u011Bj\u0161\u00EDch faktor\u016F ovliv\u0148uj\u00EDc\u00EDch sou\u010Dasn\u00FD v\u00FDvoj most\u016F z p\u0159edpjat\u00E9ho betonu je d\u016Fraz na kvalitu konstrukc\u00ED s ohledem na mezn\u00ED stavy pou\u017Eitelnosti, na trvanlivost a na bezporuchov\u00FD provoz p\u0159i p\u0159im\u011B\u0159en\u00E9 \u00FAdr\u017Eb\u011B, tj. \u00FAdr\u017Eb\u011B s mal\u00FDmi n\u00E1klady a s minim\u00E1ln\u00EDm naru\u0161en\u00EDm provozu na most\u011B. Z hlediska pou\u017Eitelnosti, provozuschopnosti, dlouhodob\u00E9 spolehlivosti a \u017Eivotnosti p\u0159edpjat"@cs . "bridge" . . . "27"^^ . . "27"^^ . . . . "2008-01-01+01:00"^^ . "bridge; creep; prestressing; deflections; methods and models for analysis"@en . " deflections" . "S\u00A0v\u00FDvojem n\u00E1rok\u016F na v\u00FDsti\u017Enost statick\u00FDch anal\u00FDz se st\u00E1le v\u00EDce projevuje pot\u0159eba vytvo\u0159it nov\u00FD, dokonalej\u0161\u00ED v\u00FDpo\u010Detn\u00ED n\u00E1stroj pro spolehliv\u00E9 stanoven\u00ED skute\u010Dn\u00E9ho rozlo\u00AD\u017Een\u00ED nap\u011Bt\u00ED v\u00A0prostorov\u011B p\u016Fsob\u00EDc\u00EDch mostn\u00EDch konstrukc\u00EDch a sou\u010Dasn\u011B i pro predikci p\u0159etvo\u0159en\u00ED, samoz\u0159ejm\u011B v\u00A0\u010Dasov\u00E9m v\u00FDvoji, s\u00A0respektov\u00E1n\u00EDm zm\u011Bn statick\u00E9ho syst\u00E9mu, a to v\u0161e pro projekto\u00ADvou praxi bez nutnosti vynakl\u00E1dat vysok\u00E9 \u010D\u00E1stky za slo\u017Eit\u00E9 v\u00FDpo\u010Detn\u00ED programy. Rozvinut\u00ED metod \u0159e\u0161en\u00ED zalo\u017Een\u00FDch na 3D modelech v\u00A0kombinaci s\u00A0nov\u00FDmi v\u00FDpo\u010Detn\u00EDmi n\u00E1stroji bude dopln\u011Bno o automatizovan\u00FD optimalizovan\u00FD n\u00E1vrh p\u0159edp\u011Bt\u00ED. Ustanoven\u00E9 metody a postupy budou kalibrov\u00E1ny porovn\u00E1n\u00EDm s\u00A0v\u00FDsledky m\u011B\u0159en\u00ED na re\u00E1ln\u00FDch mostn\u00EDch konstrukc\u00EDch. V\u00FDstupem budou i d\u00EDl\u010D\u00ED programov\u00E9 aplikace pro \u0159e\u0161en\u00ED \u00FA\u010Dink\u016F dotvarov\u00E1n\u00ED a smr\u0161\u0165ov\u00E1n\u00ED a optimalizovan\u00FD n\u00E1vrh p\u0159edp\u011Bt\u00ED z\u00A0hlediska omezen\u00ED nadm\u011Brn\u00FDch pr\u016Fhyb\u016F. Sou\u010D\u00E1st\u00ED projektu bude i vytvo\u0159en\u00ED souboru doporu\u010Den\u00ED pro samotnou v\u00FDpo\u010Detn\u00ED anal\u00FDzu - vytvo\u0159en\u00ED adekv\u00E1tn\u00EDho statick\u00E9ho modelu, spr\u00E1vn\u00E9 zohledn\u011Bn\u00ED" . . . "GP103/08/P613" .