Seismic Performance Assessment of Masonry Buildings Using In Situ Material Properties
Publication: Journal of Performance of Constructed Facilities
Volume 31, Issue 4
Abstract
Seismic performance assessment of existing buildings requires the existing material’s properties to be determined as this has a significant influence on the seismic risk. As one of the most common construction type in Turkey, masonry buildings are assessed generally based on the recommended material properties specified in relevant codes as opposed to testing of samples taken from the existing buildings. However, due to different material types and workmanship quality, the specified properties might be quite different from the existing values. For these reasons, a comprehensive study has been undertaken to investigate the influence of mechanical properties of existing masonry buildings on their seismic performance. The study has two parts. First, the mechanical properties of materials commonly used in the Turkish masonry construction were determined by extracting wallets from existing structures and conducting laboratory experiments. The second part of the study was devoted to seismic performance assessment of selected buildings using material properties determined based on field tests and values specified in the codes. Within the context of determining existing mechanical properties, compression, diagonal tension, and shear tests were conducted on the specimens taken from existing buildings. Stress-strain responses for compression and diagonal tension tests were measured. When compared with the allowable strength values recommended by the current Turkish design code, the test results indicated significant differences from code recommended values. Thus, building assessment results were found to be greatly influenced by the material strength estimations. Based on the evaluation of material test results, lower-bound material properties are proposed for use in assessment of masonry buildings.
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Acknowledgments
The authors acknowledge the financial support provided by Ministry of Environment and Urbanization, Directorate of Infrastructure and Urban Renewal for conducting this study. The fourth author acknowledges the support from TUBA-GEBIP for continuing research endeavors. The contributions of METU Structural Mechanics Laboratory workers Osman Keskin, Murat Demirel, and Hasan Metin during the site and laboratory work are also gratefully acknowledged.
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Published In
Journal of Performance of Constructed Facilities
Volume 31 • Issue 4 • August 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Aug 3, 2016
Accepted: Dec 9, 2016
Published online: Mar 3, 2017
Published in print: Aug 1, 2017
Discussion open until: Aug 3, 2017
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