Seismic performance evaluation of unreinforced masonry school buildings in Turkey

Yılmaz, Salih; Tama, Yavuz Selim; Bilgin, Hüseyin

doi:10.1177/1077546312453190

Cited by 11 publications

(8 citation statements)

References 11 publications

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“…The observed building damages for URM structures during the past earthquakes support the analytical results obtained in this study; the reports and studies (Jagadish et al, 2003;Kaplan et al, 2010;Klingner, 2006;Tomazevic, 1999;Yoshimura and Kuroki, 2001) from past earthquakes pointed out masonry facades with numerous spandrels and between those spandrels failed due to shear. Stress concentrations due to shear in spandrels observed in pushover analyses for these constructions are clear indicators of such failures and potential risk in existing URM buildings for future earthquakes.…”

Section: Discussionsupporting

confidence: 88%

“…Even though a large percentage of loss of life during the past earthquakes have occurred due to the poor performance of masonry buildings, the efforts to measure and to increase their seismic performance are not adequate when compared with current advances in the area of reinforced concrete structures (Tomazevic, 1999;Erberik and Yakut, 2008) Recent devastating earthquakes have emphasised the inadequate seismic performance of unreinforced masonry (URM) buildings to the worldwide community. In literature, several studies related to performance of URM buildings in past earthquakes are available (Calvi, 1999;Decanni et al, 2004;Jagadish et al, 2003;Kaplan et al, 2010;Klingner, 2006;Pasticier et al, 2008;Yilmaz et al, 2012;Yoshimura and Kuroki 2001). Many of URM buildings were affected by severe earthquakes due to poor quality of construction, poor workmanship, aging and the lack of maintenance.…”

Section: Introductionmentioning

confidence: 99%

“…1999 Kocaeli and Duzce in Turkey, 2001 Gujarat, India;2002 Molise and2009 L'Aquila, Italy;2010 Haiti and2010 Chile), there have been significant efforts to mitigate the earthquake hazards on URM buildings in many countries (Decanni et al, 2004;Jagadish et al, 2003;Kaplan et al, 2010;Klingner, 2006;Lagomarsina and Penna 2003;Yoshimura and Kuroki 2001). Seismic safety of URM buildings has been questioned in the wake of L'Aquila, Italy (6 April 2009), Haiti (12 January 2010) and Chile (27 February 2010) earthquakes because there was a widespread conviction that these buildings experienced considerable damage compared to reinforced concrete buildings.…”

Section: Introductionmentioning

confidence: 99%

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Seismic capacity evaluation of unreinforced masonry residential buildings in Albania

Bilgin

Korini

2012

Nat. Hazards Earth Syst. Sci.

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Abstract. This study evaluates seismic capacity of the unreinforced masonry buildings with the selected template designs constructed per pre-modern code in Albania considering nonlinear behaviour of masonry. Three residential buildings with template designs were selected to represent an important percentage of residential buildings in medium-size cities located in seismic regions of Albania. Selection of template designed buildings and material properties were based on archive and site survey in several cities of Albania. Capacity curves of investigated buildings were determined by pushover analyses conducted in two principal directions. The seismic performances of these buildings have been determined for various earthquake levels. Seismic capacity evaluation was carried out in accordance with FEMA (Federal Emergency Management Agency) 440 guidelines. Reasons for building damages in past earthquakes are examined using the results of capacity assessment of investigated buildings. It is concluded that of the residential buildings with the template design, with the exception of one, are far from satisfying required performance criteria. Furthermore, deficiencies and possible solutions to improve the capacity of investigated buildings are discussed.

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Section: Discussionsupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Seismic capacity evaluation of unreinforced masonry residential buildings in Albania

Bilgin

Korini

2012

Nat. Hazards Earth Syst. Sci.

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“…Most of these current masonry buildings were designed considering merely gravity loads without any consideration of earthquake resistant design rules [2]. Furthermore, previous studies [3][4][5][6][7][8][9][10][11] and earthquake inspection reports have shown that masonry structures are very susceptible to seismic movements. Consequently, this typology has high seismic vulnerability over the region.…”

Section: Introductionmentioning

confidence: 99%

Influence of material properties on the seismic response of masonry buildings

Hysenlliu¹,

Bidaj²,

Bilgin³

2020

Res. Eng. Struct. Mater.

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Recent earthquakes occurred in many parts of the world have shown that unreinforced masonry [URM] buildings constructed according to older codes may constitute an important source of risk. It is known that the mechanical response of the masonry structures depends on several factors including the compressive and shear strength of its constituents, bricks shape as well as the volumetric ratio between the wall texture and components. In this study, the effects of the material choices of a particular type of masonry buildings were studied. The typology chosen in this study represents a typified masonry building of the current Albanian building stock; these buildings were mostly built between 1977-78 and thus were designed without considering the seismic requirements proposed in today's modern codes. This template building has been constructed in different regions of the country with the same architectural and structural configuration in two versions; red clay bricks and silicate bricks. The aim of this study is to investigate the influence of these two different materials on the seismic response of the selected masonry building. The evaluation is based on the use of nonlinear static analyses, performed by using TREMURI software. In order to estimate the reliable seismic response for this typology, extensive research in terms of historical information, structural characterization and the definition of the inherent material parameters has been executed. Upon the evaluation of the obtained results, in contrast to the type of buildings constructed by clay masonry, calcium silicate one showed a stiffer and slightly stronger response. However, at similar values of in-plane, lateral drift they exhibited more brittle response yielding unforeseen damage during seismic excitations.

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“…In particular, in Italy, as well as in most Mediterranean and Middle Eastern countries, the school buildings are mainly historic structures, with a great variety of technical and construction solutions. For that reason, the programmes under development for structural, energy and technological requalification should require specific methodological guidelines and operation practices for assessment and control of the overall performances, taking into account both the cultural and architectural values of the fabric and the requirements for safety, comfort and functionality for very vulnerable users [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Performance assessment of italian school heritage architecture by non-destructive investigation

Fatiguso¹,

Fino²,

Scioti³

2017

Int. J. HA

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The restoration of Italian school heritage architecture is a crucial domain. This is mainly due to the general conditions of physical obsolescence and lack of maintenance, with relevant impacts at the technical, environmental, social, cultural and economic levels. In particular, the historic school buildings, dating back to the early 20th century, show specific issues, which should be carefully assessed. In detail, they are characterized by combined structural systems, with 'traditional' load-bearing masonry walls and foundations and 'modern' concrete and iron flooring solutions. They were conceived throughout a few decades, before the concrete framing system developed, following an empirical building practice, where any 'innovative' industrial materials used had not been thoroughly tested. Consequently, those buildings generally lack technical records on constructional techniques and technological solutions. Moreover, they have undergone very distinctive decay mechanisms and pathological patterns, related to the interaction between products and systems with incompatible or unpredictable performances. Finally, they require low invasive and compatible interventions, in order to preserve their unique structural and environmental balance, as well as their historical value. Based on some case studies of monumental school buildings in Bari, South Italy, this article discusses the identification methods for concrete and iron flooring systems in historic architecture of the early 20th century, in terms of constructional solutions and most recurring anomalies and pathologies. Furthermore, it focuses on non-destructive diagnostic techniques, as integrated with preliminary historic research, direct survey and comparative analysis with similar cases and technical records. The final goal is to develop some guidelines and tools-databases of building materials and techniques, charts of decay patterns and causes and tables for selection of onsite tests-as decision-making support throughout the pre-diagnosis. Those guidelines and tools should help identify the actual performances of such building systems and, thus, select the most effective, compatible and long-lasting maintenance solutions, in order to avoid local hazardous situations for vulnerable users.

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Seismic performance evaluation of unreinforced masonry school buildings in Turkey

Cited by 11 publications

References 11 publications

Seismic capacity evaluation of unreinforced masonry residential buildings in Albania

Seismic capacity evaluation of unreinforced masonry residential buildings in Albania

Influence of material properties on the seismic response of masonry buildings

Performance assessment of italian school heritage architecture by non-destructive investigation

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