Geliştirilmiş Deplasman Katsayı Yöntemi (GDKY) Kullanarak Bazı Yapısal Parametreler ile Depremsel Hasar Arasındaki İlişkinin Araştırılması

Yıl 2017, , 619 - 632, 30.12.2017

Hakan Karaca

https://doi.org/10.17100/nevbiltek.263972

Cited By: 1

Öz

Deprem
hasarı ile yer hareketi büyüklüğü arasındaki bağıntıyı açıklamak için
araştırmacılar güvenilir ve hızlı yöntemler aramaktadırlar. Hasarın nicelik
olarak ifade edilmesi için, tamamıyla istatistiksel verilere dayanan hasar
görebilirlik eğrileri geliştirilmiştir. Bu eğrilerin elde edilmesi sırasında,
genellikle yapıların kat sayıları göz önüne alınarak sınıflandırılma yapıldığı
bilinmektedir. Ancak, yapı kat sayıları ile hasar arasında herhangi bir bağıntı
geliştirilmediğinden de anlaşılır ki, bahsi geçen yaklaşımın doğruluğu hala
sorgulanmaya açıktır. Bu çalışmada da, sadece bu bağıntının olup olmadığı
değil, hasar ile doğal titreşim periyodu, süneklik ve yanal rijitlik katsayısı
arasında herhangi bir bağıntı olup olmadığı araştırılmıştır. Geliştirilmiş
Deplasman Katsayıları Yöntemi (GDKY) kullanılarak yanal ötemeler hesaplanmış ve
çatı katı ötelemesi ile öteleme oranı elde edilmiştir. Çalışma sonunda, hasar
görebilirlik eğrilerinin, bahsi geçen yapısal parametrelerle ilişkili olduğu
anlaşılmış ancak bu ilişkinin, kullanılan veri tabanına ve yapıların dağılıma
bağlı olduğu belirtilmiştir. 

Anahtar Kelimeler

Kat sayısı, doğal titreşim periyodu, yanal rijitlik katsayısı, süneklik, hasar görebilirlik

Investigation of the Relationship between the Various Structural Parameters and Performance Displacement by Using Improved Displacement Coefficient Method

Öz

The need to express the earthquake
damage in terms of the exposed level of ground motion; pushed the researchers
to find a reliable and quick-to-apply method. In an effort to quantify the
damages, fragility curves are introduced which are based on statistical
evaluation. In the derivation of the fragility curves for buildings, the number
of story is used as the main grouping parameter. However, since there isn’t an
explicit form of equation relating the number of stories to the damage, this
common approach requires further investigation. In this study, not only the
influence of the number of story on the damage but also the influence of the
various parameters of the buildings, such as fundamental period, ductility
ratio and lateral stiffness index are investigated. Improved Displacement
Coefficient Method (IDCM) is used to obtain the lateral performance of the
building in terms of roof displacements and global drift ratios. At the end of
the study of the study, it is proven that fragility curves are sensitive to the
mentioned parameters; however, it is very dependent on the compiled database. 

Anahtar Kelimeler

Number of story, fundamental period, ductility, lateral stiffness index, fragility

Kaynakça

• Karaca, H., "Estimation of Potential Earthquake Losses for the Evaluation of Earthquake Insurance Risks", METU Civil Engineering Dept., Ph.D. Thesis, 321s, Ankara,Turkey, 2014
• [2] Ozcebe G., Yucemen M.S., Aydogan V., Yakut A., "Preliminary Seismic Vulnerability Assessment of Existing Reinforced Concrete Buildings in Turkey- Part I: Statistical Model Based on Structural Characteristics", in: Seismic Assessment and Rehabilitation of Existing Buildings, Kluwer Academic Publishers-KAP, Doortrecht, Netherlands,2003
• [3] Crowley H., "Periods of Vibration for Displacement Based Assessment of RC Buildings", University of Pavia, European School for Advanced Studies in Reduction of Seismic Risk (ROSE School), , M.Sc. Dissertation, , Italy, 2003
• [4] Newmark N.M. and Hall W.J., "Earthquake Spectra and Design", Monograph, Earthquake Engineering Research Institute (EERI): Oakland, California, USA, 1982
• [5] Vidic, T., Fajfar, P., Fischinger M., "Consistent Inelastic Design Spectra: Strength and Displacement", Earthquake Engineering and Structural Dynamics, (23)5, 507–521, 1994
• [6] Gulkan, P. L. and Utkutuğ, D., "Minimum Design Criteria for Earthquake Safety of School Buildings", Türkiye Mühendislik Haberleri, (425)3, 13-22, 2003
• [7] Gunel A.O., "Influence of the Shear Wall Area to Floor Area Ratio on the Seismic Performance of Existing Reinforced Concrete Buildings", METU, Civil Engineering Dept., M.Sc. Dissertation, Ankara, Turkey, 2013
• [8] Burak B. and Comlekoglu H.G., "Effect of Shear Wall Area to Floor Area Ratio on the Seismic Behavior of Reinforced Concrete Buildings", Journal of Structural Engineering ASCE, (139)11, 1928–1937, 2013
• [9] Shinozuka M., Feng M. Q., Lee, J., and Naganuma, T., "Statistical analysis of fragility curves", Journal of Structural Engineering, 126, 1224–1231, 2000
• [10] Pitilakis K., Weatherill G., Crowley H., Pinho R., "Systematic Seismic Vulnerability and Risk Analysis for Buildings, Lifeline Networks and Infrastructures Safety Gain", Deliverable D2.12, 2011
• [11] Erberik M.A. and Elnashai A.S., "Fragility Analysis of Flat Slab Structures", Engineering Structures, 26, 937-948, 2004
• [12] Akkar S.,Sucuoglu H., Yakut A., "Displacement Based Fragility Functions for Low and Mid- rise Ordinary Concrete Buildings", Earthquake Spectra,(21)4, 901-927, 2005
• [13] Ay B.O. and Erberik M.A., "Vulnerability of Turkish Low-Rise and Mid-Rise Reinforced Concrete Frame Structures", Journal of Earthquake Engineering, (12) S2, 2–11, 2008
• [14] Erberik M.A., "Fragility Based Assessment of Typical Mid-Rise and Low-Rise Reinforced Concrete Buildings in Turkey", Engineering Structures, (30)5, 1360-1374, 2008
• [15] Kircil M.S., and Polat Z., "Fragility analysis of mid-rise R/C frame buildings", Engineering Structures., (28)9, 1335-1345, 2006
• [16] Ucar T. and Duzgun M., "Betonarme Binalar İçin Artımsal İtme Analizi Esaslı Analitik Hasar görebilirlik Eğrilerinin Oluşturulması", Teknik Dergi, (24)3,6421-6446 (In Turkish), 2013
• [17] Computers and Structures, Inc., SAP 2000 Version 15, Structural Analysis Program, Berkeley, CA, 2000
• [18] ATC-40, "Seismic Evaluation and Retrofit of Concrete Buildings", Applied Technology Council, California, USA, 1996
• [19] NEHRP Guidelines for Seismic Rehabilitation of Buildings. Federal Emergency Management Agency Report: FEMA 273. Washington D.C.,USA, 1997
• [20] NEHRP, Recommended Provisions for the Development of Seismic Regulations for New Buildings. by the. Building Seismic Safety Council, Washington, D. C.,USA, 1994
• [21] EuroCode 8,, Design of Structures for Earthquake Resistance, CEN, Brussels, 2004
• [22] Goel R.K. and Chopra A.K., "Period Formulas for Moment-resisting Frame Buildings", Journal of Structural Engineering ASCE, 11, 1454–1461, 1997
• [23] Goel R.K. and Chopra A.K., "Period Formulas for Concrete Shear Wall Buildings", Journal of Structural Engineering ASCE, 4, 426-433,1998
• [24] Akkar S. and Cagnan Z., "A Local Ground Motion Predictive Model For Turkey And Its Comparison With Other Regional And Global Ground-Motion Models", Bulletin of Seismological Society of America, 100, 2978-2995, 2010