Abstract
Torsional Behavior of Eccentrically Inverted V Braced Frames Torsional irregularities are one of the most frequently observed reasons of the serious damages. The effects of torsion mainly emerge in irregularly designed structures while in some regularly designed ones, they can appear as a result of application fault. In this study, the effects of torsion on capacity of unbraced frames and eccentrically braced inverted V frames were investigated experimentally and numerically. Within the scope of the study, one span, two-storey, symmetrical systems in plan made out of box-sectioned members were examined. In these systems, in order to focus on torsional irregularities originated from different reasons, two types of load eccentricities were considered. Under these loadings, frames were pushed until maximum displacement reached up to 9 % of the frame height or up to the collapse of the system. The results obtained from eccentric loadings were compared to those obtained by symmetric loading
References
- Perus, I., Fajfar, P., On The Torsional Response of Single-Storey Structures Under Bi-Axial Excitatin. Earhquake Engineering and Structural Dynamic, 34, 931–941, 2005.
- Fajfar, P., Marusic, D., Perus, I., Torsional Effects in the Pushover - Based Seismic Analysis of Buildings, Journal of Earthquake Engineering, 6, 831-854, 2005.
- Stathopoulos, K. G., Anagnostopoulos, S. A., Inelastic Torsion of Multistorey Buildings Under Earthquake Excitations, Earthquake Engineering and Structural Dynamics, 34, 1449-1465, 2005.
- De La Llera JC., Chopra AK., Understanding the Inelastic Seismic Behaviour of Asymmetric - Plan Buildings. Earthquake Engineering and Structural Dynamics, 24, 549-572, 1995.
- Marusic, D., Fajfar, P. On The Inelastic Seismic Response of Asymmetric Buildings Under Bi-Axial Excitation. Earthquake Engineering and Structural Dynamic, 34, 943- 963, 2005.
- Rutenberg A., EAEE Task Group (TG):8 Behaviour of Irregular and Complex Asymmetric Structures – Progress since 1998. Proceeding of the 12th World Conference on Earthquake Engineering, 832, 2002.
- De Stefano, M., Pintucchi, B., A Review of Research On Seismic Behaviour of Irregular Building Structures Since 2002, Springer Science, Bull Earthquake Eng., 2007.
- Lucchini, A., Monti, G., Kunnath, S.K., Seismic Behaviour of Irregular Buildings Under Uniaxial Excitation, Earthquake Engineering and Structural Dynamics, 38, 1053-1070, 2009.
- De Stefano, M., Pintucchi, B., Predicting Torsion – Induced Lateral Dipslacements for Pushover Analysis: Influence of Torsional System Characteristics, Earthquake Engineering and Structural Dynamics, 39, 1369-1394, 2010.
- Erduran, E., Ryan, K.L., Effects of Torsion on the behavior of peripheral steel-braced frame systems, Earthquake Engineering and Structural Dynamics, 34, 1032, 2010.
- Lucchini, A., Monti, G., Kunnath, S., Nonlinear Response of Two-Way Asymmetric Single Story Building Under Biaxial Excitation, Journal of Structural Engineering, 137, 34-40, 2011.
- SAP2000 ver.12, Computers And Structures, www.csiberkeley.com
- Çelik, D.İ., Merkezi ve Dışmerkezi Güçlendirilmiş Çelik Uzay Çerçevelerin Sismik Performansı. Yüksek Lisans Tezi, Süleyman Demirel Üniversitesi, 2008.
- AISC, 2005. Seismic Provisions for Structural Steel Buildings. American Institue of Steel Construction, Inc. Chicago, Illionis.
- TS 648, Çelik Yapıların Hesap ve Yapım Kuralları, Türk Standartları Enstitüsü. Ankara, 1980.
- TS 498,Yapı Elemanlarının Boyutlandırılmasında Alınacak Yüklerin Hesap Değerleri, Türk Standartları Enstitüsü, Ankara, 1987.
- TS 3357, Çelik Yapılarda Kaynaklı Birleşimlerin Hesap ve Yapım Kuralları, Türk Standartları Enstitüsü, Ankara,1979.
- Deprem Bölgelerinde Yapılacak Binalar Hakkında Yönetmelik. Resmi Gazete, Ankara, 2007.
Abstract
Burulma düzensizlikleri, şiddetli hasarların en sık rastlanan nedenlerindendir. Burulma etkileri genellikle düzensiz olarak tasarlanmış yapılarda ortaya çıksa da, düzenli şekilde tasarlanmış yapılarda da bazı uygulama hataları nedeniyle ortaya çıkabilmektedir. Bu çalışmada, çaprazsız ve dışmerkez ters V çaprazlı çerçeve sistemlerin kapasitesi üzerine burulmanın etkisi deneysel ve sayısal olarak araştırılmıştır. Çalışmada, kutu kesitli elemanlardan oluşan tek açıklıklı, iki katlı, planda simetrik sistemler ele alınmıştır. Bu sistemlerde, çeşitli nedenlerden dolayı ortaya çıkabilecek burulma düzensizliklerinin dikkate alınması amacıyla iki tip yük eksantirisitesi oluşturulmuştur. Bu yüklemeler altında çerçeveler, çatı deplasmanı, çerçeve yüksekliğinin % 9’una ulaşana kadar veya sistem göçme durumuna gelene kadar itilmiştir. Eksantrik yüklemeler altında elde edilen sonuçların, simetrik yükleme durumu ile karşılaştırmaları verilmiştir
References
- Perus, I., Fajfar, P., On The Torsional Response of Single-Storey Structures Under Bi-Axial Excitatin. Earhquake Engineering and Structural Dynamic, 34, 931–941, 2005.
- Fajfar, P., Marusic, D., Perus, I., Torsional Effects in the Pushover - Based Seismic Analysis of Buildings, Journal of Earthquake Engineering, 6, 831-854, 2005.
- Stathopoulos, K. G., Anagnostopoulos, S. A., Inelastic Torsion of Multistorey Buildings Under Earthquake Excitations, Earthquake Engineering and Structural Dynamics, 34, 1449-1465, 2005.
- De La Llera JC., Chopra AK., Understanding the Inelastic Seismic Behaviour of Asymmetric - Plan Buildings. Earthquake Engineering and Structural Dynamics, 24, 549-572, 1995.
- Marusic, D., Fajfar, P. On The Inelastic Seismic Response of Asymmetric Buildings Under Bi-Axial Excitation. Earthquake Engineering and Structural Dynamic, 34, 943- 963, 2005.
- Rutenberg A., EAEE Task Group (TG):8 Behaviour of Irregular and Complex Asymmetric Structures – Progress since 1998. Proceeding of the 12th World Conference on Earthquake Engineering, 832, 2002.
- De Stefano, M., Pintucchi, B., A Review of Research On Seismic Behaviour of Irregular Building Structures Since 2002, Springer Science, Bull Earthquake Eng., 2007.
- Lucchini, A., Monti, G., Kunnath, S.K., Seismic Behaviour of Irregular Buildings Under Uniaxial Excitation, Earthquake Engineering and Structural Dynamics, 38, 1053-1070, 2009.
- De Stefano, M., Pintucchi, B., Predicting Torsion – Induced Lateral Dipslacements for Pushover Analysis: Influence of Torsional System Characteristics, Earthquake Engineering and Structural Dynamics, 39, 1369-1394, 2010.
- Erduran, E., Ryan, K.L., Effects of Torsion on the behavior of peripheral steel-braced frame systems, Earthquake Engineering and Structural Dynamics, 34, 1032, 2010.
- Lucchini, A., Monti, G., Kunnath, S., Nonlinear Response of Two-Way Asymmetric Single Story Building Under Biaxial Excitation, Journal of Structural Engineering, 137, 34-40, 2011.
- SAP2000 ver.12, Computers And Structures, www.csiberkeley.com
- Çelik, D.İ., Merkezi ve Dışmerkezi Güçlendirilmiş Çelik Uzay Çerçevelerin Sismik Performansı. Yüksek Lisans Tezi, Süleyman Demirel Üniversitesi, 2008.
- AISC, 2005. Seismic Provisions for Structural Steel Buildings. American Institue of Steel Construction, Inc. Chicago, Illionis.
- TS 648, Çelik Yapıların Hesap ve Yapım Kuralları, Türk Standartları Enstitüsü. Ankara, 1980.
- TS 498,Yapı Elemanlarının Boyutlandırılmasında Alınacak Yüklerin Hesap Değerleri, Türk Standartları Enstitüsü, Ankara, 1987.
- TS 3357, Çelik Yapılarda Kaynaklı Birleşimlerin Hesap ve Yapım Kuralları, Türk Standartları Enstitüsü, Ankara,1979.
- Deprem Bölgelerinde Yapılacak Binalar Hakkında Yönetmelik. Resmi Gazete, Ankara, 2007.
Details
| Primary Language | Turkish |
|---|---|
| Journal Section | Articles |
| Authors | |
| Publication Date | October 1, 2013 |
| Submission Date | June 18, 2015 |
| Published in Issue | Year 2013 Volume: 24 Issue: 117 |