Email this article Impact of composite columns on soft and weak storey irregularities in buildings without ground floor infill walls
DOI: https://doi.org/10.20528/cjsmec.2025.02.001
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In buildings without infill walls on the ground floor, structural irregularities, such as soft and weak storey irregularities can significantly reduce their resilience to earthquakes. These irregularities arise from insufficient lateral stiffness and strength in the ground floor structure, leading to instability during seismic events. This study investigated the seismic performance of frame structures, focusing on two key factors: the lateral rigidity provided by infill walls and the potential benefits of replacing conventional columns with composite columns on the ground floor. The analysis was conducted in accordance with the Turkish Building Earthquake Code 2018 (TBEC-2018), which provides specific guidelines for designing structures to withstand seismic forces. The findings revealed that including the lateral rigidity of infill walls in the analysis increased the cracked cross-section’s moment of inertia by 5%. While this addition enhanced the building’s lateral load resistance, it also increased the rigidity irregularity coefficient by 33%, indicating a potential redistribution of seismic forces that could affect the overall stability. On the other hand, introducing composite columns on the ground floor helped reduce the rigidity irregularity coefficient by 20%, providing a more uniform response to lateral loads. However, this improvement came at the cost of a 29% increase in the strength irregularity coefficient, highlighting the challenges in balancing stiffness and strength irregularities. These findings emphasize the importance of carefully evaluating structural modifications to optimize seismic performance. While composite columns are effective in mitigating rigidity irregularities, their impact on strength irregularities must be managed to avoid compromising overall safety.
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References
ASCE/SEI 41-17 (2017). Seismic evaluation and retrofit of existing buildings. American Society of Civil Engineers.
Beigi HA, Sullivan TJ, Christopoulos C, Calvi GM (2015). Factors influencing the repair costs of soft-storey RC frame buildings and implications for their seismic retrofit. Engineering Structures, 101, 233–245.
Çelik Yapıların Tasarım, Hesap ve Yapım Esaslarına Dair Yönetmelik (2016). Eki: Çelik Yapıların Tasarım, Hesap ve Yapımına Dair Esas-lar. Ministry of Environment and Urbanization, Republic of Türkiye, Ankara. (in Turkish)
CSiCol, Design of Reinforced Concrete Columns, v.10, Computers & Structures Incorporated, New York, America.
Elkady A, Lignos DG (2017). Full-scale testing of deep wide-flange steel columns under multi axis cyclic loading: loading sequence, boundary effects, and lateral stability bracing force demands. Journal of Structural Engineering, 144(2), 04017189.
Elkady A, Lignos DG (2018). Improved seismic design and nonlinear modeling recommendations for wide-flange steel columns. Journal of Structural Engineering, 144 (9), 04018162.
Fakhouri MY, Igarashi A (2013). Multiple-slider surfaces bearing for seismic retrofitting of frame structures with soft first stories. Earthquake Engineering Structural Dynamics, 42(1), 145–161.
Hashemi M, Tsang H, Al-Ogaidi Y, Wilson J, Al-Mahaidi R (2017a). Collapse assessment of reinforced concrete building columns through multi-axis hybrid simulation. American Concrete Instute Structural Journal, 114(2), 437–449.
Hashemi MJ, Al-Ogaidi Y, Al-Mahaidi R, Kalfat R, Tsang HH, Wilson JL (2017b). Application of hybrid simulation for collapse assessment of post-earthquake CFRP-repaired RC columns. Journal of Structural Engineering, 143(1), 04016149.
Hessabi RM, Mercan O (2016). Investigations of the application of gyro-mass dampers with various types of supplemental dampers for vibration control of building structures. Engineering Structures, 126, 174–186.
ideCAD, AEC Software for Architecture, Structural Engineering, Structural Detailing, and Construction from Architectural Design to Fabrication, v.10.20, ideYAPI, İstanbul, Türkiye.
Lima C, De Stefano G, Martinelli E (2014). Seismic Response of Masonry Infilled RC Frames: Practice-oriented models and open issues. Earthquakes and Structures, 6, 409-436.
Meli R (1986). Evaluation of performance of concrete buildings damaged by the September 19, 1985 Mexico Earthquake. Proceedings American Society of Civil Engineers International Conference: The Mexico Earthquakes 1985. Factors involved and lessons learned, Mexico City, Mexico, 308-327.
Sahoo DR, Rai DC (2013). Design and evaluation of seismic strengthening techniques for reinforced concrete frames with soft ground storey. Engineering Structures, 56, 1933–1944.
Sakino K, Nakahara H, Morino S, Nishiyama I (2004). Behavior of centrally loaded concrete-filled steel-tube short columns. Journal of Structural Engineering, 130(2), 180–188.
Shahsahebi A, Waezi Z, Hashemi MJ (2020). Seismic performance assessment of multistorey RC buildings with soft-storey collapse mechanism equipped with gapped inclined bracing (GIB). Structures, 28, 2448–2466.
Solak K, Orhan S (2023). Axial compression behaviour of concrete-filled auxetic tubular short columns. Challenge Journal of Concrete Research Letters, 14(1), 1-9.
Şermet F, Ercan E, Hökelekli E, Demir A, Arısoy B (2021). The behavior of concrete-encased steel composite column beam joints under cyclic loading. The Structural Design of Tall and Special Buildings, 30(6), 1-20.
TBEC (2018). Specifications for buildings to be built in seismic zones (TBDY-2018). Ministry of Environment and Urbanization, Republic of Türkiye, Ankara. (in Turkish)
Tezcan S, Yazıcı A, Özdemir Z, Erkal A (2007). Zayıf kat – yumuşak kat düzensizliği. Altıncı Ulusal Deprem Mühendisliği Konferansı, İstanbul, Türkiye, 339-349. (in Turkish)
Ulukaya S, Yüzer N (2017). Tarihi Yapılarda taşıyıcı tuğla duvarın elastisite modülünün deneysel ve matematiksel model ile belirlenmesi. Uluslararası Katılımlı 6. Tarihi Yapıların Korunması ve Güçlendirilmesi Sempozyumu, İstanbul, Türkiye, 533-542. (in Turkish)
Van Earthquake Report (2011a). 23 Ekim 2011 mw 7.2 Van depremi sismik ve yapısal hasara ilişkin saha gözlemleri. Report no: METU/EERC 2011-04, Earthquake Engineering Research Center, Middle East Technical University. (in Turkish)
Van Earthquake Report (2011b), 23 Ekim ve 9 Kasım 2011 tarihli Van depremleri yerinde yapılan inceleme ve değerlendirme raporu. İstanbul Kültür University. (in Turkish)
Watanabe F (1997). Behavior of reinforced concrete buildings during the Hyougoken-Nanbu Earthquake. Cement Concrete Composite, 19, 203–211.
Yazdi HA, Hashemi MJ, Al-Mahaidi R, Gad E (2021). Multi-axis testing of concrete-filled steel tube columns forming ductile soft-storey in multi-storey buildings. Journal of Constructional Steel Research, 183, 106736.
Zengin B (2021). Evaluation of the period and soft story conditions of reinforced concrete buildings with and without infill walls. Challenge Journal of Structural Mechanics, 7(3), 151-161.
Zhang Z, Xu P, Gao D, Zhu Y, Nie Y (2018). The study of the seismic performance of the strong-beam and weak-column shaped joints of concrete-filled steel tubular column and steel beams. 3rd International Conference on Smart City and Systems Engineering (ICSCSE), Xiamen, China, 413-418.
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