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Applying the digital-image-correlation technique to measure the deformation of an old building’s column retrofitted with steel plate in an in situ pushover test

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Abstract

An in situ pushover test is carried out on an old building of Guan-Miao elementary school in south Taiwan. Columns of this building are seismically retrofitted with steel plate. The DIC (digital-image-correlation) technique is used to measure the deformation of the retrofitted column. The result shows that the DIC technique can be successfully applied to measure the relative displacement of the column. Additionally, this method leads to the measurement of relative displacements for many points on the column simultaneously. Hence, the column deformation curve, rotation and curvature can be determined using interpolation method. The resulting curvature-diagram reveals that the phenomenon of plastic hinge occurs at about 2% storey drift ratio, and that the DIC technique can be applied to measure column deformation in a full scale in situ test.

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Acknowledgements

This work has been supported by the National Science Council of Taiwan, ROC through grant no. NSC 100-2625-M-260-001. This support is gratefully acknowledged.

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Authors and Affiliations

  1. Department of Civil and Environmental Engineering, National University of Kaohsiung, Kaohsiung, 820, Taiwan

    SHIH-HENG TUNG

  2. Department of Civil Engineering, National Chi Nan University, Nantou, Taiwan, 1 University Road, Puli, Nantou, 545, Taiwan

    MING-HSIANG SHIH

  3. Department of Landscape Architecture, National Chin-Yi University of Technology, Taichung, 411, Taiwan

    WEN-PEI SUNG

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  1. SHIH-HENG TUNG
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  2. MING-HSIANG SHIH
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TUNG, SH., SHIH, MH. & SUNG, WP. Applying the digital-image-correlation technique to measure the deformation of an old building’s column retrofitted with steel plate in an in situ pushover test. Sadhana 39, 699–711 (2014). https://doi.org/10.1007/s12046-014-0242-9

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  • DOI: https://doi.org/10.1007/s12046-014-0242-9

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