Sürdürülebilir Kalkınma Amaçları

  • ArticleAçık Erişim2026
    Functional Lightweight Concrete Systems for Sustainable Load-Bearing Applications: Experimental Assessment of Perlite-Modified Reinforced Concrete Beams

    Polat, Melih Sakir; Turan, Ahmet İhsan; Kucuk, Mesut; Kumbasaroglu, Atila; Yalciner, Hakan; Ayaz, Yasar

    The increasing demand for sustainable structural materials in the construction industry has intensified the need to develop high-performance and environmentally efficient reinforced concrete systems. In this context, the incorporation of functional material-enhanced concrete systems, including raw lightweight aggregates such as perlite, offers a promising pathway for reducing environmental impact while maintaining adequate structural performance. This study experimentally investigates the flexural behavior of reinforced concrete (RC) beams incorporating raw perlite aggregates within a functional material-enhanced structural framework. A total of four RC beams with identical geometry and reinforcement details were produced, including perlite aggregate beams (P25 and P40) and conventional aggregate beams (C25 and C40), corresponding to compressive strength classes of 25 MPa and 40 MPa. All specimens were tested under monotonic flexural loading conditions. The structural response was evaluated in terms of load–displacement behavior, stiffness degradation, ductility, energy dissipation capacity, moment–curvature response, and failure modes. The results indicate that perlite aggregate beams exhibit reduced stiffness and energy dissipation capacity compared to conventional counterparts at comparable mixture-average compressive-strength levels. However, the high-strength perlite beam (P40) demonstrated comparable flexural capacity and ductility to the normal-strength conventional beam (C25), highlighting its potential for sustainable structural applications. Furthermore, a building-scale environmental assessment based on a representative three-story reinforced concrete structure demonstrates that the use of raw perlite aggregates significantly reduces energy consumption, CO2-equivalent emissions, and water usage. From a functional materials perspective, the findings provide a basis for the future development of multifunctional load-bearing concrete systems, where lightweight aggregate substrates can be combined with protective or performance-enhancing coating technologies to achieve improved durability, environmental resistance, and structural efficiency. This integration could further enhance durability and long-term structural performance in load-bearing applications.

    • SDG 9 · Sanayi, Yenilikçilik ve Altyapı
    • SDG 12 · Sorumlu Üretim ve Tüketim
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  • ArticleAçık Erişim2026
    Experimental evaluation of reinforced concrete columns produced with natural perlite aggregates under cyclic loading

    Atlı, Sefa; Yalciner, Hakan; Kumbasaroglu, Atila; Ayaz, Yaşar; Turan, Ahmet İhsan; Bulut, H. Alperen; Naimi, Sepanta

    A total of four reinforced concrete (RC) columns were tested to compare the structural capacities of RC columns produced by natural perlite aggregates and conventional concrete. The structural performance of the RC columns made from natural perlite aggregates was compared to conventional RC columns regarding the same concrete strength levels, sectional properties, and reinforcement layouts of conventional RC columns. The RC columns were tested under a combined constant axial load ratio of 30% with cyclic loading for two concrete strength levels, namely, 25 and 40 MPa. Load–displacement curves, energy absorption capacities, stiffness degradation, the moment-curvature relationship, the plastic hinge mechanism, and the ductility index were experimentally obtained at two different concrete types along with the measured stress–strain properties of the conventional and perlite concrete. The test results showed that the construction of the RC columns using only perlite may become possible in the future by providing an adequate concrete stress–strain capacity, which will be improved. Additionally, the use of natural perlite aggregates can contribute to sustainable construction practices by reducing the reliance on conventional aggregates.

    • SDG 9 · Sanayi, Yenilikçilik ve Altyapı
    • SDG 12 · Sorumlu Üretim ve Tüketim
    RDL Kalıcı Kaydıİncele
  • ArticleYalnız künye2026
    The effect of elevated temperature on the mechanical properties of concrete produced with raw perlite aggregate

    Ozturk, Akif Berke; Turan, Ahmet İhsan; Kumbasaroglu, Atila; Yalciner, Hakan; Ayaz, Yaşar

    Deterioration caused by elevated temperatures in the micro- and macrostructure of concrete can lead to significant reductions in its mechanical performance, making it crucial to assess the residual behavior of concrete elements after thermal exposure. This study experimentally investigates the effects of elevated temperatures (25 °C, 200 °C, 400 °C, and 600 °C) on cubic and prismatic specimens produced with two different aggregate types (raw perlite aggregate and conventional coarse aggregate) across four mixtures (C25, C40, P25, and P40). Destructive (compressive and flexural strength) and non-destructive (ultrasonic pulse velocity, scanning electron microscopy) tests were conducted before and after thermal loading. Increasing the temperature to 600 °C reduced the compressive strength of conventional mixtures by 34.91 % (C25) and 41.79 % (C40), whereas perlite-based concretes exhibited significantly lower reductions of 9.91 % (P25) and 12.80 % (P40). Mass loss remained negligible (<2 %) up to 200 °C, increased to 4–6 % for conventional mixtures and 6–11 % for perlite-based mixtures at 400 °C, and reached 25–40 % and nearly 47 %, respectively, at 600 °C. UPV results revealed a substantial degradation in internal integrity at high temperatures, with decreases of 49–60 % in conventional concretes and only 16–17 % in perlite-based mixtures at 600 °C. Although the flexural strength of P25 and P40 was initially lower at 25 °C, their post-heating performance became comparable to conventional mixtures, showing similar residual flexural behavior at elevated temperatures. SEM observations further confirmed that perlite-based concretes exhibited fewer microcracks and reduced matrix deterioration compared to conventional mixtures. Overall, the findings clearly demonstrate that raw perlite aggregate significantly enhances the thermal resistance, internal stability, and residual durability of concrete, making it a promising sustainable alternative for structures exposed to elevated temperature environments.

    • SDG 12 · Sorumlu Üretim ve Tüketim
    RDL Kalıcı Kaydıİncele
  • ArticleAçık Erişim2026
    Seismic Performance and Nonlinear Flexural Behavior of Corroded Reinforced Concrete Columns: An Analytical and Parametric Study

    Çelik, Alper; Turan, Ahmet İhsan; Yalciner, Hakan; Kumbasaroglu, Atila

    This study presents an analytical investigation and a parametric evaluation of the structural behavior and seismic performance of highly corroded reinforced concrete (RC) columns, based on previously conducted experimental studies by the authors. In the analytical phase, moment–curvature relationships were obtained by considering the deterioration of the mechanical properties of both concrete and reinforcing steel due to corrosion in RC column specimens. By linking the sectional moment–curvature response with the element-level behavior observed in the experimental program, the plastic hinge lengths and rotational capacities of the corroded RC columns were determined. Subsequently, a parametric study was carried out using the analytical framework developed in the first phase on a set of 48 RC column models. In this investigation, axial load ratio, concrete compressive strength, corrosion level, section type, and concrete cover depth were considered as key parameters. The results of the combined experimental and analytical investigations demonstrate that the adopted section analysis approach successfully captures the nonlinear flexural behavior observed in the corroded specimens and provides a reliable basis for evaluating the structural performance and for supporting the assessment of seismic performance of deteriorated RC columns.

    • SDG 9 · Sanayi, Yenilikçilik ve Altyapı
    RDL Kalıcı Kaydıİncele
  • Review ArticleAçık Erişim2025
    Applicability of Agro-Waste Materials in Structural Systems for Building Construction: A Scoping Review

    Kumbasaroglu, Hediye; Kumbasaroglu, Atila

    This article presents the results of a systematic review investigating the potential of agricultural wastes as sustainable and low-carbon alternatives in reinforced concrete (RC) production. Background: The depletion of natural resources and the environmental burden of conventional construction materials necessitate innovative solutions to reduce the carbon footprint of construction. Agricultural wastes, including coconut shells (CSs), rice husk ash (RHA), and palm oil (PO) fuel ash, emerge as promising materials due to their abundance and mechanical benefits. Objective: This review evaluates the potential of agricultural wastes to improve sustainability and enhance the mechanical properties of RC structural elements while reducing carbon emissions. Design: Studies were systematically analyzed to explore the sources, classification, and material properties of agro-wastes (AWs), with a particular focus on their environmental benefits and performance in concrete. Results: Key findings demonstrate that AWs enhance compressive strength, tensile strength, and modulus of elasticity while reducing the carbon footprint of construction. However, challenges such as variability in material properties, limited long-term durability data, and lack of standardized guidelines hinder their broader adoption. Conclusions: AWs hold significant potential as sustainable additives for RC elements, aligning with global sustainability goals. Future research should address material optimization, lifecycle assessments, and regulatory integration to facilitate their mainstream adoption in construction.

    • SDG 2 · Açlığa Son
    • SDG 12 · Sorumlu Üretim ve Tüketim
    • SDG 13 · İklim Eylemi
    RDL Kalıcı Kaydıİncele
  • ArticleYalnız künye2025
    An experimental evaluation on structural performance level of corroded reinforced concrete frames

    Turan, Ahmet İhsan; Ayaz, Yaşar; Yalciner, Hakan; Kumbasaroglu, Atila

    A total of 5 full-scale Reinforced Concrete (RC) frames were tested to develop new models for predicting the structural behavior of corroded RC frames and to verify the accuracy of the models mostly developed for RC columns. Four corroded and one non-corroded RC frame were tested under cyclic loading. Corroded RC frames were tested under displacement-controlled cyclic loading at four corrosion levels and for a constant applied axial load ratio of 0.20, with the same concrete compression strength level and reinforcement bar layout. Actual corrosion ratios were obtained following the loading tests, breaking all RC columns and beams and extracting all reinforcement bars from concrete. The test results demonstrated that the corrosion level played an active role in the structural capacity of the RC frames. Initial corrosion crack widths had more significant effects on structural performance. Some models proposed for corroded RC columns can also be used for corroded RC frames in terms of yield and ultimate load capacities according to the corrosion levels of the columns and beam composing the RC frame. It was also concluded from the test results that the displacement-based ductility ratio for corroded RC frames could still be misleading if they were not computed according to energy-based or bilateral failure criteria. Structural properties such as initial/secant stiffness and energy absorption capacity calculated based on experimental measurements for RC frames had further disclosed corrosion effects.

    • SDG 9 · Sanayi, Yenilikçilik ve Altyapı
    RDL Kalıcı Kaydıİncele
  • ArticleAçık Erişim2025
    Experimental Investigation of Metamaterial-Inspired Periodic Foundation Systems with Embedded Piezoelectric Layers for Seismic Vibration Attenuation †

    Oz, Mehmet Furkan; Kumbasaroglu, Atila; Yalciner, Hakan; Korozlu, Nurettin; Babacan, Yunus; Çatır, Fulya Esra Cimilli; Sayarcan, Done

    Seismic metamaterial-inspired periodic foundations have emerged as promising vibration-mitigation concepts capable of attenuating seismic wave propagation within specific frequency bands. This study presents an experimental investigation on the dynamic response of periodic foundation configurations, with and without embedded piezoelectric layers, to evaluate their vibration-attenuation characteristics. The experimental program employed a shake table driven by a 0.75 kW servo motor and included excitation step counts of 3000, 4000, and 5000. Accelerometers mounted on the specimen surfaces recorded vibration data at 80 ms intervals. Three foundation configurations were tested: (i) a conventional reinforced concrete block, (ii) a one-dimensional periodic foundation composed of alternating concrete and rubber layers, and (iii) a periodic foundation incorporating piezoelectric modules. Time-domain and frequency-domain analyses showed that the periodic foundations achieved notable reductions in both peak and RMS accelerations, especially near resonance frequencies. The configuration, including piezoelectric layers, exhibited similar attenuation performance while also generating measurable instantaneous voltage outputs under vibration. However, these voltage peaks—reaching a maximum of 1.64 V—represent only a laboratory-scale, proof-of-concept demonstration of electromechanical coupling rather than a practical or continuous form of energy harvesting, given the inherently sporadic nature of seismic excitation. Overall, the results confirm that the tested system is not a full metamaterial in the classical sense but rather a metamaterial-inspired periodic arrangement capable of inducing band-gap-based vibration attenuation. The inclusion of piezoelectric elements provides auxiliary sensing and micro-energy-generation capabilities, offering a preliminary foundation for future multifunctional seismic-protection concepts.

    • SDG 9 · Sanayi, Yenilikçilik ve Altyapı
    RDL Kalıcı Kaydıİncele
  • ArticleAçık Erişim2025
    Prediction of seismic performance levels of corroded RC frames based on crack width

    Turan, Ahmet İhsan; Kumbasaroglu, Atila; Yalciner, Hakan; Ayaz, Yaşar

    In reinforced concrete (RC) structures, corrosion of the reinforcement due to environmental factors or concrete components poses significant risks to both structural integrity and safety. Reinforcement corrosion, can be visually detected through cracks in the concrete cover, and this situation offers a practical approach to associating corrosion-induced cracks with structural parameter degradations caused by the corrosion mechanism. In this study, a total of five RC frame specimens were fabricated, with one specimen not exposed to corrosion and four specimens exposed to different levels of corrosion through the accelerated corrosion method, all having the same cross-section and material properties. In the experiments conducted under a constant 20 % axial load and cyclic repeated load effects, the structural performance indicators of the RC frame specimens were examined. Within the scope of the study, two experimental models are proposed. The first model aims to estimate the loss in the cross-sectional area of the reinforcement bar based on crack width, while the second model was oriented towards estimating the energy consumption capacity of the specimen for a specific displacement ratio based on the loss in the cross-sectional area of the reinforcement. The results revealed that as the corrosion ratio increased, the crack widths of the specimens also increased, and after a 1.5 % drift ratio, there was a significant decrease in the energy consumption capacities of the corroded specimens.

    • SDG 9 · Sanayi, Yenilikçilik ve Altyapı
    RDL Kalıcı Kaydıİncele
  • CorrectionYalnız künye2024
    Corrigendum to “Torsional behavior of reinforced concrete beams with corroded reinforcement” [Structures 20 (2019) 476–488, (S2352012419300931), (10.1016/j.istruc.2019.05.013)]

    Yalciner, Hakan; Kumbasaroglu, Atila; Turan, Ahmet İhsan

    The journal regret to find that [Figure presented] Fig. 8b is not printed in the paper.

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  • ArticleAçık Erişim2024
    Effect of Longitudinal Circular Hollows on the Flexural Strength of Reinforced Concrete Beams

    Kumbasaroglu, Atila; Korkmaz, Emre

    In this study, the effect of hollows passing through reinforced concrete (RC) beams in the longitudinal direction on flexural strength was examined. 4 RC beams were designed to satisfy the conditions for implementation. One of the beams was fabricated as a reference specimen and 3 of the remaining beams were fabricated with total of 5 pipes in the tension, neutral axis and compression regions. All experimental beam specimens were subjected to 4-point axial flexural tests with the request for constant flexural moments at the limits of loading. Experimental beams with pipes in the compression region, tensile region and neutral axis regions were confronted with the reference beam in terms of initial stiffness, ductility, load-bearing capacity and energy absorption capacity. It was verified that to provide that both the sufficient stiffness and sufficient ductility conditions for the reinforced concrete beams, do not establish any structural discontinuity, the longitudinal orbicular cross-section hollows created by pipes should be passed through the neutral axis region as much as possible. The results of the present study not only align with those of previous research (e.g., the correlative results) but also extend the current state of research (e.g., the revealed differences) and provide starting points for future research. Conclusions are drawn from these results at the end of the paper.

    • SDG 9 · Sanayi, Yenilikçilik ve Altyapı
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  • ArticleAçık Erişim2024
    Assessment of reinforced concrete building damages following the Kahramanmaraş earthquakes in Malatya, Turkey (February 6, 2023)

    Ihsan Turan, Ahmet; Celik, Alper; Kumbasaroglu, Atila; Yalciner, Hakan

    Earthquakes of magnitude Mw = 7.7 and Mw = 7.6 hit the city of Kahramanmaraş (Turkey) on 6 February 2023. These earthquakes caused serious damage in 11 provinces in Turkey resulting in over 50,000 deaths and huge economic losses with the collapse of thousands of buildings. Two consecutive devastating earthquakes have severely damaged the reinforced concrete building stock located in Malatya. There are many reasons reinforced concrete structures suffer damage under the influence of seismic loads. These reasons can be listed as material and section properties that do not comply with earthquake codes, workmanship defects, ground parameters that are not considered and design errors, as seen in field investigations after earthquakes in Turkey in the past. In this research, a field study was conducted on reinforced concrete buildings damaged after the earthquakes in Malatya province. The causes of structural damages in reinforced concrete buildings between 6–26 years of age were assessed in terms of design and material defects. The structural damages were mainly caused due to insufficient stirrups in structural members, short column, strong beam–weak column, failures of infill walls, soft story type collapse, poor concrete quality, and reinforcement corrosion. In addition to the field investigation, the spectrum relationships created using raw acceleration data obtained from DEMP (Disaster and Emergency Management Presidency) stations in Malatya province were compared with the design response spectra.

    • SDG 9 · Sanayi, Yenilikçilik ve Altyapı
    • SDG 11 · Sürdürülebilir Şehirler ve Topluluklar
    RDL Kalıcı Kaydıİncele
  • CorrectionAçık Erişim2024
    Corrigendum to “Torsional behavior of reinforced concrete beams with corroded reinforcement” [Structures 20 (2019) 476–488, (S2352012419300931), (10.1016/j.istruc.2019.05.013)]

    Yalciner, Hakan; Turan, Ahmet İhsan; Kumbasaroglu, Atila

    The journal regret to find that Fig. 7c is not printed in the paper.

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  • ArticleAçık Erişim2022
    Experimental Study to Predict Bond-Slip Behavior of Corroded Reinforced Concrete Columns

    Yalciner, Hakan; Kumbasaroglu, Atila

    To perform accurate seismic analyses of corroded reinforced concrete (RC) buildings, it is necessary to predict the bond-slip relationships to modify the moment-curvature relationships. In this study, empirical models were developed to predict the bond strength of corroded RC columns. Twenty-five RC columns were tested under combined cyclic lateral displacement excursions for three concrete strength levels-specifically, 9, 27, and 37 MPa (1305, 3915, and 5365 psi, respectively)-at two axial load ratios of 0.20 and 0.40 and at four corrosion levels. An accelerated corrosion method was applied to corrode the reinforcing bars embedded in the RC columns. The actual corrosion levels were determined by breaking the concrete and extracting all the longitudinal and transverse reinforcing bars from the RC columns. Three empirical models were developed. The first model was used to predict the development length of the corroded reinforcing bars. The second and third models were used to predict the bond strength and slip in the reinforcing bars as a function of the corrosion levels. The results indicated that previous models that predict the bond strength of corroded RC members were limited because of the theoretically considered development length of the noncorroded reinforcing bars.

    • SDG 9 · Sanayi, Yenilikçilik ve Altyapı
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  • ArticleYalnız künye2022
    An experimental study on seismic performance levels of highly corroded reinforced concrete columns

    Celik, Alper; Yalciner, Hakan; Kumbasaroglu, Atila; Turan, Ahmet İhsan

    In the literature, only one empirical model is available as a nondestructive method for the prediction of seismic performance levels of corroded reinforced concrete (RC) columns as a function of the initial corrosion crack width at lower corrosion levels. Because of the ruptured transverse reinforcement bars at higher corrosion levels, the structural behavior may turn brittle in terms of shear failure. Therefore, in this study, higher corrosion levels for a different concrete strength level from that empirical model were studied. To do this, four RC columns were subjected to accelerated corrosion, and the widths of initial corrosion cracks were measured. The corroded RC columns were then tested under combined constant axial load and cyclic lateral displacement excursions. After the cyclic loading test, the actual corrosion levels at each reinforcement bar were obtained by extracting the reinforcement bars from the concrete. Test results showed that the prediction of seismic performance levels of corroded RC columns based on initial corrosion crack widths were limited owing to the nonlinear increase in the crack width with the increase in the corrosion levels. New empirical models were developed to predict the remaining energy capacities and seismic performance levels of the corroded RC columns.

    • SDG 9 · Sanayi, Yenilikçilik ve Altyapı
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  • Conference ObjectYalnız künye2021
    Cyclic loading test on highly corroded reinforced concrete columns

    Celik, Alper; Yalciner, Hakan; Kumbasaroglu, Atila; Turan, Ahmet Ihsan; Belletti, B.; Coronelli, D.

    An experimental study was performed on five reinforced concrete (RC) columns to investigate the structural behavior of highly corroded RC columns. Four of the RC columns were corroded using an accelerated corrosion method for different corrosion levels at longitudinal bars as 15.4, 20.2, 27.3 and 28.3%. RC columns were tested under cyclic load for a constant axial load ratio of 0.40. After the loading test, the actual corrosion levels were obtained by extracting the longitudinal bars and stirrups following the breaking of the RC columns. Load-displacement curves, ductility ratios and energy absorption capacities of tested RC columns were obtained. Test results revealed that the ductility ratios of corroded RC columns should be determined in accordance with energy-based or bilateral failure criteria due to the misleading of increased ductility ratios of corroded RC columns based on the displacement method.

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  • ArticleAçık Erişim2021
    Effect of polypropylene fibers on the development lengths of reinforcement bars of slabs

    Kumbasaroglu, Atila; Yalciner, Kürşad; Yalciner, Hakan; Turan, Ahmet I.; Celik, Alper

    Ductile behavior is one of the most important earthquake indicators that must be possessed by structures. Because of the limited tensile strength of concrete, alternative materials such as structural nanosynthetic fibers as three-dimensional reinforcement bars have gained increasing popularity over several decades. However, the contribution of fibers to the development length of reinforcement bars has not been investigated. Therefore, an experimental study was conducted to investigate the effects of polypropylene fibers on the development lengths of reinforcement bars. Thirty-three reinforced concrete (RC) slabs at three different volume fractions of fibers of 0.0, 1.0 and 1.5 % at different embedment lengths of reinforcement bars were investigated under four-point flexural strength tests. Load-displacement curves, energy absorption capacities, ductility ratios and bond-slip relationships were obtained for different embedment lengths of reinforcement bars with three different amounts of fibers in RC concrete slabs. The test results revealed that the predominant effects of fibers on structural behavior pertained to the energy absorption capacities at plastic deformation. It was found that resisting more strains by reinforcement bars with the help of added polypropylene fibers resulted in the regaining of ductile behavior due to the reduced embedment lengths of the reinforcement bars.

    • SDG 9 · Sanayi, Yenilikçilik ve Altyapı
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  • ArticleAçık Erişim2020
    The Effect of Different Additives Materials and Different Concrete Strength Levels on the Ductility of Short Beams

    Kumbasaroglu, Atila; Sezgin, Halil İbrahim

    Short-spanned beams generally have inadequate flexural capacities to transfer the loads which cause ductility problems due to over exceeded shear forces. In addition to the use of stirrup alternative additive materials which are used for partially or fully replacing the stirrup bars have recently been met focus entirely on increasing the shear capacities of reinforced concrete members. In this study, an experimental study was conducted to investigate the improving of flexural capacity of short-spanned beams at different used concrete strength levels with different admixtures. A total of fourteen experimental reinforced concrete beams were tested under three point flexural strength tests. Failure patterns for each specimen were presented. Loaddisplacement relationships, initial stiffness, ductility ratio and energy dissipation capacities of different designed short-spanned beams were evaluated. As a result, the admixture material, which has a stronger adhesion property, was provided a higher bending capacity and thus a more ductile behaviour was achieved in the short-spanned beams.

    • SDG 9 · Sanayi, Yenilikçilik ve Altyapı
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  • ArticleYalnız künye2020
    Experimental evaluation and modeling of corroded reinforced concrete columns

    Yalciner, Hakan; Kumbasaroglu, Atila

    A total of 30 full-scale reinforced concrete (RC) columns were tested to develop models for the prediction of the structural behavior of corroded RC columns. Of these, 25 RC columns were tested under cyclic loading for two different applied axial load ratios-namely, 0.20 and 0.40-at three concrete strength levels-namely, 9, 27, and 37 MPa (1305, 3915, and 5365 psi)-and at four corrosion levels. Five RC columns were loaded monotonically with an axial load ratio of 0.20 at four corrosion levels to calculate the damage index. The actual corrosion levels were obtained by breaking the concrete and extracting all the reinforcing bars. The test results demonstrated that the ductility ratios of the corroded RC columns, which were not determined in accordance with energy-based or bilateral failure criteria, could be misleading. The determined energy dissipation capacity and damage index of the columns further revealed the corrosion effects.

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  • ArticleAçık Erişim2020
    Effect of Anchor Bars on Seismic Behavior of Infilled Walled Frames

    Kumbasaroglu, Atila

    User-defined plastic hinge properties obtained experimentally are used to examine the structural behavior of bare, infilled walled frames with and without anchor bars in reinforced concrete (RC) buildings. Experimentally obtained moment-curvature relationships of structural members (i.e., beams and columns) are used to determine the plastic hinge properties of each section. Three building frames are modeled and examined for time-history analysis using 20 ground-motion records. Seismic performance levels of three buildings are analyzed to determine the effects of anchor bars. Limit states at each performance level are defined, and the multi-record incremental dynamic analysis curves are obtained; 16%, 50%, and 84% fractal curves are obtained for each case. Cumulative distribution functions are constructed to summarize the varieties in the roof-drift ratios of three RC buildings with different frame types for design-based and maximum-considered earthquake hazards. It is found that, with an increased spectral acceleration of ground motions, the probability of exceeding the performance levels of infilled walled frames in reinforced buildings is reduced with the help of anchor bars. The increased stiffness of RC buildings with infilled wall frames exhibiting lower ductility is re-gained by the absorption energy of the anchor bars.

    • SDG 9 · Sanayi, Yenilikçilik ve Altyapı
    • SDG 11 · Sürdürülebilir Şehirler ve Topluluklar
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  • ArticleAçık Erişim2019
    Eşdeğer Deprem Yükü Yöntemi Kullanılarak Tarihi Bir Yığma Yapının Sismik Performans Düzeyinin Belirlenmesi

    Çelik, Alper; Kumbasaroglu, Atila

    Tarih boyunca Anadolu toprakları, birçok medeniyete ev sahipliği yapmıştır. Bu sebeple ülkemizde tarihiyapılar azımsanmayacak sayıdadır. Bununla birlikte ülkemizin, aktif deprem kuşağı içerisinde yer almasısebebiyle birçok tarihi yapı, meydana gelen depremlerden zarar görmüş veya yıkılmıştır. Kültür mirasıaçısından önem arz eden tarihi yapılarımızın, gelecek kuşaklara güvenle aktarılabilmesi için sismikperformans seviyelerinin doğru ve hızlı bir şekilde belirlenerek gerekli müdahalelerin yapılması oldukçaönemlidir. Çalışma kapsamında örnek olarak ele alınan Tarihi Yanıkoğlu Camisinde yapılan ölçümler vegözlemlere dayalı olarak yapının analitik modeli oluşturulmuştur. Yapı konumuna özel olarak seçilen depremspektrumları ile eşdeğer deprem yükü hesaplanmıştır. Yapının kendi ağırlığı ve hesaplanan deprem kuvvetlerialtında yapılan analizlerden elde edilen sonuçlara bağlı olarak yapının sismik performans düzeyi 2017 yılındaVakıflar Genel Müdürlüğünce yayımlanan Tarihi Yapılar İçin Deprem Risklerinin Yönetimi Kılavuzuna görebelirlenmiştir. Bu çalışma ile tarihi yığma yapıların sismik performanslarının değerlendirilmesinde eşdeğerdeprem yükü yöntemi kullanılarak pratik bir yaklaşım ortaya konulmuştur.

    • SDG 11 · Sürdürülebilir Şehirler ve Topluluklar
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