Değişken Dolgu Duvar Özellikli Betonarme Yapıların Deprem Güvenliklerinin Değerlendirilmesi

Betonarme yapılarda dolgu duvarlar genellikle yapının mimari gereksinimlerinden dolayı bölme elemanları olarak kullanılmaktadır. Dolgu duvarların deprem etkisine karşı daha zayıf olduğuna dair bir fikir birliği olmamasına rağmen yapının deprem davranışını genellikle olumlu etkilediği düşünülmektedir. Bu nedenle dolgu duvarların betonarme yapıların yapısal davranışına katkısının anlaşılması çok önemlidir. Bu çalışmada dolgu duvarın basınç dayanımı ve kalınlığı gibi mekanik özelliklerinin yapıların deprem davranışa ve performansına olan etkisi incelenmektedir. Bu amaçla, farklı yapısal özellikler sahip konut türü mevcut betonarme binalar seçilmiştir. Değişken özelliklere sahip dolgu duvarlı mevcut betonarme yapıların yapısal ve deprem davranışını incelemek için mimari planları da dikkate alınarak DBYBHY (2007) esaslarına göre her iki yatay doğrultuda doğrusal olmayan analizleri yapılmıştır. Analiz sonuçlarından her bir betonarme binaya ait hedef yerdeğiştirmeler, doğal titreşim periyotları ve göreli kat öteleme değerleri belirlenmiştir. Dolgu duvarlı ve dolgu duvarsız çerçeve sistemlerin incelenmesi yapılmış ve karşılaştırılmıştır. Yapılan çalışmanın sonucunda dolgu duvarlar betonarme yapıların deprem performansına olumlu katkısı sağladığı ve duvarın basınç dayanımı ile kalınlığının yapısal davranışı önemli ölçüde etkilediği görülmüştür.

Earthquake Vulnerability Assessment of RC Structures with Variable Infill Wall Properties

The infill walls are often used to the aim of dividing the residential area to provide the architectural requirements according to purposeof use in residential RC structures. Although there is conflict about the infill walls occur a RC structure less vulnerable to earthquakeimpacts, the beneficial influence of the infill walls on dynamic and static behaviors of RC structures is generally thought. Therefore,understanding the contribution of the infill wall to structural behavior of RC structures is very significant in terms of the structuralsafety. This study investigates the influence of infill wall having variable mechanical properties as compressive strength and thicknesson structural behavior and earthquakes performance of low-rise residential RC structures. In the study, the selected RC structures forearthquake vulnerability assessment are existing residential buildings. The nonlinear static analyzes are carried out for each directionby considering architectural plan of each of RC structure to determine influence of infill wall having variable properties on thestructural and earthquake behavior. The target displacements, fundamental periods and relative drift ratio of each story of each RCstructures are determined from analysis results. The analyzes are also made for the bare-frame cases of RC structures and arecompared with behavior of infilled frames of them. When the results obtained in the this study are evaluated, the existing infill wallsand differences in the its mechanical properties significantly affected earthquake vulnerability the RC structures, positively.

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Asteris, P. G., Giannopoulos, I. P., & Chrysostomou, C. Z. (2012). Modeling of infilled frames with openings. The Open Construction and Building Technology Journal, 6(1), 81-91.
Bas, S., Lee, J. H., Sevinc, M., & Kalkan, I. (2017). Seismic performance of R/C structures under vertical ground motion. Computers and Concrete, 20(4), 369-380.
Benavent-Climent, A., Ramírez-Márquez, A., & Pujol, S. (2018). Seismic strengthening of low-rise reinforced concrete frame structures with masonry infill walls: shaking-table test. Engineering structures, 165, 142-151.
Bertero, V., & Brokken, S. (1983). Infills in seismic resistant building. Journal of Structural Engineering, 109(6), 1337-1361.
Celarec, D., Ricci, P., & Dolšek, M. (2012). The sensitivity of seismic response parameters to the uncertain modelling variables of masonry-infilled reinforced concrete frames. Engineering Structures, 35, 165-177.
Chrysostomou, C. Z., & Asteris, P. G. (2012). On the in-plane properties and capacities of infilled frames. Engineering Structures, 41, 385-402.
Crisafulli, F. J., Carr, A. J., & Park, R. (2000). Analytical modelling of infilled frame structures-a general review. Bulletin-New Zealand Society for Earthquake Engineering, 33(1), 30-47.
CSI, SAP 2000. Integrated Finite Element Analysis and Design of Structures Basic Analysis Reference Manual. Berkeley, California, USA, 2002.
Dilmaç H, Demir F. (2019, 17-20 April). Effect of mechanical features of masonry infill walls on the seismic behavior & performance of RC buildings. International Civil Engineering and Architecture Conference, Trabzon, Turkey.
Dilmaç, H., Ulutaş, H., Tekeli, H., & Demir, F. (2018). An Evaluation on Seismic Performance of Existing Reinforced Concrete Buildings in Turkey. The Journal of Graduate School of Natural and Applied Sciences of Mehmet Akif Ersoy University, 9(Ek (Suppl.) 1), 224-237.
Dilmac, H., Ulutas, H., Tekeli, H., & Demir, F. (2018). The investigation of seismic performance of existing RC buildings with and without infill walls. Computers and Concrete, 22(5), 439-447.
Dolšek, M., & Fajfar, P. (2008). The effect of masonry infills on the seismic response of a four-storey reinforced concrete frame—a deterministic assessment. Engineering Structures, 30(7), 1991-2001.
Fardis MN, editor. Experimental and numerical investigations on the seismic response of the RC infilled frames and recommendations for code provisions. ECOEST/PREC 8, Rep. No. 6. LNEC. Lisbon; 1996.
Federal Emergency Management Agency (FEMA 273). "NEHRP Guidelines For The Seismic Rehabilitation of Buildings". Developed by the Building Seismic Safety Council for the Federal Emergency Management Agency, Washington, D.C., USA, 1997.
Federal Emergency Management Agency (FEMA-356). "Prestandard and Commentary For Seismic Rahabilitation of Buildings", Washington, D.C., 2000.
Furtado, A., Rodrigues, H., Arêde, A., & Varum, H. (2016). Experimental evaluation of out-of-plane capacity of masonry infill walls. Engineering Structures, 111, 48-63.
Hermanns, L., Fraile, A., Alarcón, E., & Álvarez, R. (2014). Performance of buildings with masonry infill walls during the 2011 Lorca earthquake. Bulletin of Earthquake Engineering, 12(5), 1977-1997.
Kaçım S. The Effect of Infill Wall Properties on the R.C. Buildings Performance. M.Sc. Dissertation, Suleyman Demirel University, Graduate Scholl of Natural and Applied Sciences, Isparta, Turkey, 2017.
Kakaletsis, D. J., Karayannis, C. G., & Panagopoulos, G. K. (2011). Effectiveness of rectangular spiral shear reinforcement on infilled R/C frames under cyclic loading. Journal of Earthquake Engineering, 15(8), 1178-1193.
Kareem, K. M., & Güneyisi, E. M. (2019). Effect of masonry infill wall configuration and modelling approach on the behaviour of RC frame structures. Arabian Journal for Science and Engineering, 44(5), 4309-4324.
Kaushik, H. B., Rai, D. C., & Jain, S. K. (2006). Code Approaches to Seismic Design of Masonry-Infilled Reinforced ConcreteFrames: A State-of-the-Art Review. Earthquake Spectra, 22(4), 961-983.
Klingner, R. E., & Bertero, V. V. (1978). Earthquake resistance of infilled frames. Journal of the structural division, 104(6), 973-989.
Korkmaz, K. A., Demir, F., & Yenice, T. (2015). Earthquake performance investigation of R/C residential buildings in Turkey. Computers and Concrete, 15(6), 921-933.
Madan, A., Reinhorn, A. M., Mander, J. B., & Valles, R. E. (1997). Modeling of masonry infill panels for structural analysis. Journal of structural engineering, 123(10), 1295-1302.
Mander, J. B., & Nair, B. (1993). Seismic performance of brick-infilled steel frames with and without retrofit. In NCEER Bulletin(Vol. 7, No. 3, pp. 13-7). US National Center for Earthquake Engineering Research (NCEER).
Merter, O., Ucar, T., & Duzgun, M. (2017). Determination of earthquake safety of RC frame structures using an energy-based approach. Computers and Concrete, 19(6), 689-699.
Ministry of Public Works and Resettlement. TEC (Turkish Earthquake Code). "Specification for Structures to be Built in Disaster Areas". Ankara, Turkey, 2007.
Madan, A., Reinhorn, A. M., Mander, J. B., & Valles, R. E. (1997). Modeling of masonry infill panels for structural analysis. Journal of structural engineering, 123(10), 1295-1302.
Nollet, M. J., & Smith, B. S. (1998). Stiffened-story wall-frame tall building structure. Computers & structures, 66(2-3), 225-240.
Panagiotakos TB, Fardis MN. "Seismic response of infilled RC frames structures". In: 11th world conference on earthquake engineering, No.225, 1996.
Peng C, Guner S. "Direct Displacement-Based Seismic Assessment of Concrete Frames". Computers and Concrete, 21(4), 355- 365, 2018.
Penna, A., Morandi, P., Rota, M., Manzini, C. F., Da Porto, F., & Magenes, G. (2014). Performance of masonry buildings during the Emilia 2012 earthquake. Bulletin of Earthquake Engineering, 12(5), 2255-2273.
Perera R. “Performance evaluation of masonry-infilled RC frames under cyclic loading based on damage mechanics”, Engineering Structures, 27(8), 1278-1288, 2005.
Pujol, S., & Fick, D. (2010). The test of a full-scale three-story RC structure with masonry infill walls. Engineering Structures, 32(10), 3112-3121.
Reinhorn, A. M. (1997). Inelastic analysis techniques in seismic evaluations. Seismic design methodologies for the next generation of performance based seismic engineering of codes, 277-287.
Ricci, P., Verderame, G. M., & Manfredi, G. (2011). Analytical investigation of elastic period of infilled RC MRF buildings. Engineering structures, 33(2), 308-319.
Sahota, M. K., & Riddington, J. R. (2001). Experimental investigation into using lead to reduce vertical load transfer in infilled frames. Engineering Structures, 23(1), 94-101.
Samoilă, D. M. (2012). Analytical modelling of masonry infills. Moment, 1000, 2.
Sattar, S., & Liel, A. B. (2016). Seismic performance of nonductile reinforced concrete frames with masonry infill walls—I: development of a strut model enhanced by finite element models. Earthquake Spectra, 32(2), 795-818.
Sattar S, Liel AB. (2010, July). Seismic Performance of Reinforced Concrete Frame Structures With and Without Masonry Infill Walls. Proceedings of the 9th US National and 10th Canadian Conference on Earthquake Engineering.
Tekeli H, Aydın A. "An Experimental Study on the Seismic Behavior of Infilled RC Frames With Opening". Scientia Iranica, 24(5), 2271-2282, 2017.
Uva, G., Raffaele, D., Porco, F., & Fiore, A. (2012). On the role of equivalent strut models in the seismic assessment of infilled RC buildings. Engineering Structures, 42, 83-94.