Identification and modal analysis of cracked R/C structures

• Autorzy: Zembaty Z. , Kowalski M.
• Języki publikacji: EN

Abstrakty

EN

The purpose of this paper is to report results of an experiment in which two, natural size r/c frames were subjected to progressive damage by seismic excitations on shaking table. Characteristic decrease of natural frequencies and increase of structural damping was observed and analyzed in detail. The shaking table experiment aimed at working out new methodology for monitoring vibrations of r/c structures to asses their state.

Słowa kluczowe

EN

crack; R/C structures; vibrations monitoring; shaking table experiment

PL

drgania; konstrukcje betonowe; pęknięcia mechaniczne ścian; badania wytrzymałościowe

• Wydawca: Oficyna Wydawnicza Politechniki Opolskiej
• Czasopismo: Zeszyty Naukowe. Budownictwo / Politechnika Opolska
• Rocznik: 2003
• Tom: z. 47
• Strony: 77--86
• Opis fizyczny: Bibliogr. 9 poz., rys., tab., wykr.

Twórcy

autor

Zembaty Z.

• Technical University of Opole, Poland

autor

Kowalski M.

• Technical University of Opole, Poland

Bibliografia

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• [2] JĘDRZEJCZAK M., KNAUFF M.: Flexural rigidity of RC elements with randomized concrete tensile strength, Archives of Civil Engineering, vol. 43(1), 1997, pp.7-22.
• [3] JONES R., The effect of frequency on the dynamie modulus and damping coefficient of concrete, Magazine of Concrete Research, 9, 1957, 69-72.
• [4] KOWALSKI M., Problems of dynamie identification of cracked reinforced concrete structures, Ph.D. tliesis, Technical University of Opole, 2003.
• [5] FRANZ G., BRENEK H., Verformungsversuche an StaliIbetonbalken mit hochfasten Bewerungsstahl, Deutscher Ausschus fur Stahlbeton, H. 188/1967
• [6] NDAMBI J.-M., VANTOMME J., HARRI K., Damage assessment in reinforced concrete beams using eigenfrequencies and mode shape derivatives, Engineering Structures, vol. 24, 2002, pp.501-515
• [7] PENZIEN J., IIANSEN R. K., Static and dynamie elastic behaviour of reinforced concrete beams, ACI Journal, Proceedings, vol. 50,1954, pp. 545-567
• [8] WANG Z., MAN, X-T.C., FINCH R.D., JANSEN B.H. The dynamie behavior and vibration monitoring of reinforced concrete beams, Journal of Testing and Evalualion, vol. 26, 1998, pp.405-419
• [9] ZEMBATY Z., Vibrations of bridge structure under kinematic wave excitations, Journal of Structural Engineering, ASCE, vol..l23, 1997, pp.479-488