"Sledov\u00E1n\u00ED zm\u011Bn mod\u00E1ln\u00EDch charakteristik t\u0159\u00ED \u017Eelezobetonov\u00FDch tr\u00E1m\u016F v z\u00E1vislosti na velikosti jejich po\u0161kozen\u00ED"@cs . "Technick\u00E1 univerzita v Ko\u0161iciach. Stavebn\u00E1 fakulta" . . "0"^^ . . . "Zborn\u00EDk predn\u00E1\u0161ok, 9.sekcia: Stavebn\u00E1 mechanika" . "1"^^ . "0"^^ . "Z(MSM 210000030)" . . "Monitoring of Modal Characteristic Changes due to Damage of Three Reinforced Concrete Beams"@en . . "RIV/68407700:21610/02:01077242" . "1"^^ . "Plach\u00FD, Tom\u00E1\u0161" . "663830" . . . "238;241" . . "T\u0159i \u017Eelezobetonov\u00E9 nosn\u00EDky byly nam\u00E1h\u00E1ny a po\u0161kozov\u00E1ny statick\u00FDm zat\u00ED\u017Een\u00EDm a cyklick\u00FDm dynamick\u00FDm zat\u00ED\u017Een\u00EDm na \u00FAnavu. P\u0159i jednotliv\u00FDch \u00FArovn\u00EDch zat\u00ED\u017Een\u00ED bylo sledov\u00E1no nar\u016Fst\u00E1n\u00ED po\u0161kozen\u00ED tr\u00E1m\u016F. Po ka\u017Ed\u00E9m zat\u011B\u017Eovac\u00EDm stupni byly experiment\u00E1ln\u011B ur\u010Deny mod\u00E1ln\u00ED charakteristiky (frekvence, tvary vlastn\u00EDho kmit\u00E1n\u00ED a jim p\u0159\u00EDslu\u0161n\u00FD \u00FAtlum) tr\u00E1m\u016F, byla vyhodnocena zm\u011Bna dynamick\u00E9ho chov\u00E1n\u00ED nosn\u00EDk\u016F v z\u00E1vislosti na \u00FArovni jejich po\u0161kozen\u00ED. Bylo provedeno porovn\u00E1n\u00ED v\u00FDsledk\u016F m\u011B\u0159en\u00ED pro jednotliv\u00E9 \u017Eelezobetonov\u00E9 tr\u00E1my, zm\u011Bna jejich dynamick\u00E9ho chov\u00E1n\u00ED byla pops\u00E1na zm\u011Bnou vlastn\u00EDch frekvenc\u00ED Df(j)zejm\u00E9na, zm\u011Bnou frekvenc\u00ED \u00FAtlumu Dfb(j), na z\u00E1klad\u011B koeficient\u016F MAC(j,j), COMAC(p) a zm\u011Bny matice mod\u00E1ln\u00ED poddajnosti [d]" . . . . . "RIV/68407700:21610/02:01077242!RIV/2003/MSM/216103/N" . . "80-7099-815-6" . . "Sledov\u00E1n\u00ED zm\u011Bn mod\u00E1ln\u00EDch charakteristik t\u0159\u00ED \u017Eelezobetonov\u00FDch tr\u00E1m\u016F v z\u00E1vislosti na velikosti jejich po\u0161kozen\u00ED"@cs . "COMAC; MAC; damping; experimental modal analysis; modal flexibility matrix; natural frequency; natural mode"@en . "Sledov\u00E1n\u00ED zm\u011Bn mod\u00E1ln\u00EDch charakteristik t\u0159\u00ED \u017Eelezobetonov\u00FDch tr\u00E1m\u016F v z\u00E1vislosti na velikosti jejich po\u0161kozen\u00ED" . "2002-05-22+02:00"^^ . "4"^^ . . . "Ko\u0161ice" . "Sledov\u00E1n\u00ED zm\u011Bn mod\u00E1ln\u00EDch charakteristik t\u0159\u00ED \u017Eelezobetonov\u00FDch tr\u00E1m\u016F v z\u00E1vislosti na velikosti jejich po\u0161kozen\u00ED" . "21610" . . "Ko\u0161ice" . "Monitoring of Modal Characteristic Changes due to Damage of Three Reinforced Concrete Beams"@en . . . "[C34196F4F7A5]" . "The paper deals with experimental modal analysis of RC-beams with purpose of identifying modal parameter changes by several levels of damage. Cracks were induced by loading the mid-section of the beam in several different static and dynamic fatigue load steps. After each step a complete experimental modal analysis was performed to determine modal parameters of the beam. The change of modal parameters was described by changes of natural frequencies Df(j), changes of damping frequencies Dfb(j), coefficients MAC(j,j), COMAC(p) and also by changes of a modal flexibility matrix [d]"@en . .