Çerçeve Tipi Yapıların Deplasman Esaslı Dizaynı İçin Deplasman Profili

Year 2006, Volume: 19 Issue: 2, 1 - 20, 31.12.2006

Altuğ Yavaş Şerif Saylan

Abstract

Deprem esnasında yapıda oluşan yapısal ve yapısal olmayan hasarlar genellikle sistemde oluşan yatay deplasmanlardan meydana gelmektedir.   Günümüzde kullanılan geleneksel kuvvet esaslı dizayn metodunda deplasmanlar dizaynın sonunda kontrol edilirler.  Bu nedenle potansiyel hasarların kontrol edilmesi çok güçtür. Yapıların hedef bir deplasman için dizayn edildiği deplasman esaslı dizayn yöntemi ile yapının hasar potansiyeli kontrol altında tutulabilmektedir. Deplasmanlar, direkt deplasman esaslı dizayn metodunun temelini oluşturmaktadır.  Moment aktaran çerçeve tipi yapıların direkt deplasman esaslı dizaynı için iki farklı deplasman profili önerilmiştir.  Bu çalışmada lineer olmayan dinamik analiz kullanılarak dört, altı ve on katlı moment aktaran çerçeve yapılar için deplasman profilleri elde edilmiştir. 

Keywords

Deplasman Esaslı Dizayn, Deplasman Profili, Lineer Olmayan Dinamik Analiz. .

Dısplacement Profıle For The Dısplacement Based Desıgn Of Moment Resıstıng Frames

Abstract

Damages that occur in structural and non-structural elements during the earthquakes are due to lateral displacements.  Traditional force based design methods control displacements at the end of the design.  Therefore, it is difficult to control potential damages.  Direct displacement based design approach that designs the structure for a given displacement profile, can control the potential damages.  Direct displacement based seismic design uses the displacement profile as the basis of the design approach.  Two different displacement profiles proposed for the direct displacement based seismic design of moment resisting reinforced concrete frame structures.  In this study displacement profiles for four, six and ten storey moment resisting frames are determined by using nonlinear time history analysis.

Keywords

Displacement Based Design, Displacement Profile, Nonlinear Time History Analysis.

References

• [1] Priestley, M. J. N., “Myths and fallacies in earthquake engineering- Conflicts between design and reality”, Concrete International, Vol 19. No 2, pp.53 1997.
• [2] Moehle, J.P., “Displacement-based design of RC structures subjected to earthquake”, Earthquake Spektra, Vol.8, No.3, pp.403-428, 1992.
• [3] Kowalsky, M.J., Priestly, M.J.N. and MacRae, G.A.,A methodology for seismic design apllied to single degree of freedom reinforced concrete strucutres, SSRP-94/16, Structural Systems Research Project, San Diego, La Jolla, California, (1994).
• [4] Calvi, G.M. and Kingsley, G.R., “Displacement-based design of multı degree-of-freedom bridge structures”, Earthquake Engineering & Structural Dynamics, Vol.24, pp.1247-1266, 1995.
• [5] Priestley, M.J.N., Ranzo, G. and Benzoni, G., Preliminary development of direct displacement based design for multi-degree of freedom systems, Proceedings, SEAOC Annual Conference, Hawaii, 1996.
• [6] Leoding, S., Kowalsky, M. J. and Priestley, M. J. N., “Direct displacement based design of reinforced concrete building frames” SSRP-98/08 Structural Systems Research Project, San Diego, La Jolla California, 1998.
• [7] Jonsson R., Direct displacement based design of seismic moment resisting concrete frames, M.Sc. Thesis, University of Washington , 2002.
• [8] Priestly, M.N.J. and Calvi G.M., “Concepts and procedures for direct displacement based design and assesment”, Seismic Design Methodologies for the Next Generation of Codes, eds. Fajfar,P. and Krawinkler, H.Rotterdam, Balkema 1997.
• [9] RAM Perform2D, RAM International, Perform is a trademark of Graham H. Powell Inc
• [10] Priestley, M.J.N., Myths and fallacies in earthquake engineering, Revisited, The Mallet Milne Lecture, IUSS Press, Pavia, 2003.
• [11] Carr, A.J., RUAUMOKO- Program for Inelastic Dynamic Analysis, Department of Civil Engineering, University of Canterbury, New Zealand, 1996.
• [12] Vanmarcke, E.H., SIMQKE A Program for Artificial Motion Generation, User’s Manual and Documentation, Dept. Of Civil Engineering, MIT, Cambridge, MA 1976.
• [13] Carr, A.J., SIMQKE- A Program Artificial Motion Generation, Department of Civil Engineering, University of Canterbury, New Zealand, 2001.
• [14] Papageorgiou, A., Halldorsson, B. and Dong, G. Target acceleration spectra compatible time histories TARSCTH, 2002.
• [15] SEAOC Blue Book “Recommended lateral force requirement and commentary”, 7th Ed. 1999.