Modelling of concrete buildings for practical nonlinear seismic response analysis

• Autorzy: Fardis M.
• Języki publikacji: EN

Abstrakty

EN

Member modelling for the practical evaluation of the seismic performance of real concrete buildings on the basis of nonlinear dynamic analysis in 3D is overviewed. Fibre Element modelling is highlighted and contrasted to simplified lumped inelasticity models of members, with parameters fitted to a wealth of cyclic test results. An application to a full-scale 3-storey structure in 3D subjected to seismic testing under two horizontal components of ground motion validates this latter type of modelling. Two further applications are presented, one to explain the partial collapse of a multi-storey building in the Athens (1999) earthquake and another for the seismic assessment and retrofitting of a theatre building. The applications, which demonstrate simple lumped inelasticity member models, with parameters fitted to test results, are cost-effective and reliable alternatives to prohibitive Fibre Element modelling.

PL

W artykule przedstawiono modelowanie (na bazie nieliniowej analizy dynamicznej w 3D) elementów rzeczywistych budynków betonowych, służące do praktycznej oceny wpływu oddziaływań sejsmicznych. Wyróżniono modelowanie elementami pasmowymi, w odróżnieniu od uproszczonych niesprężystych modeli skupionych elementów z parametrami dopasowanymi do dużej ilości wyników badań cyklicznych. Wykonanie trójwymiarowego, naturalnej wielkości modelu 3-kondygnacyjnej konstrukcji poddanej obciążeniu sejsmicznemu, w postaci dwóch poziomych składowych ruchu gruntu, uzasadnia zastosowanie tego drugiego typu modelowania. Przedstawiono również dwa dalsze zastosowania, pierwsze do wyjaśnienia częściowego zawalenia się wielokondygnacyjnego budynku w wyniku trzęsienia ziemi w Atenach (1999) i drugie do oceny sejsmicznej i modernizacji budynku teatru. Przedstawione zastosowania dowodzą, że proste, niesprężyste modele skupione, z parametrami dostosowanymi do wyników badań są ekonomicznie efektywne i stanowią pewną alternatywę dla modelowania elementami pasmowymi.

Słowa kluczowe

EN

concrete building; fibre model; non-linear dynamic analysis; RC member model; seismic response analysis; seismic assessment

PL

budynek betonowy; nieliniowa analiza dynamiczna; model RC; analiza reakcji sejsmicznych; ocena sejsmiczna

• Wydawca: Silesian University of Technology
• Czasopismo: Architecture Civil Engineering Environment
• Rocznik: 2010
• Tom: Vol. 3, no. 1
• Strony: 31--46
• Opis fizyczny: Bibliogr. 18 poz.

Twórcy

autor

Fardis M.

• University of Patras, Patras, Greece,

Bibliografia

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• [2] Biskinis D., Fardis M.N.; Cyclic Strength and Deformation Capacity of RC Members, Including Members Retrofitted for Earthquake Resistance. Proceedings of 5th International fib PhD Symposium in Civil Engineering, Delft, 2004; p.1125-1133
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• [14] Biskinis D, Roupakias G., Fardis M.N.; Degradation of Shear Strength of RC Members with Inelastic Cyclic Displacements. ACI Structural Journal, Vol.101, No.6, 2004; p.773-783
• [15] Kosmopoulos A., Bousias S., Fardis M.N.; Design and Pre-test Assessment of 3-Storey Torsionally-Unbalanced RC Test Structure. Proceedings of fib Symposium: Concrete Structures in Seismic Regions, Athens, 2003
• [16] Mola E., Negro P.; Full-Scale PsD Testing of the Torsionally Unbalanced SPEAR Structure in the As-Built and Retrofitted Configurations. Proceedings of SPEAR Workshop (M.N. Fardis and P. Negro, eds.), Ispra (IT), 2005; p.139-154
• [17] Kosmopoulos A., Fardis M.N.; Seismic Testing of 3-Storey Full-Scale Torsionally Unbalanced RC Structure: Pre-test Predictions, Design and Analyses of Retrofitting. Proc. 5th Intern. PhD Symp. Civil Engineering, 2004; Delft, p.1115-1123
• [18] Kosmopoulos A., Bousias S., Fardis M.N.; Seismic Rehabilitation of a Theater Facility according to Eurocode 8 using CFRPs. Proc. 8th Intern. Symposium on Fiber Reinforced Polymer Reinforcement for Concrete Structures (FRPRCS-8), 2007; Patras