20 April 2016 Stereovision vibration measurement test of a masonry building model
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Abstract
To monitor 3D deformations of structural vibration response, a stereovision-based 3D deformation measurement method is proposed in paper. The world coordinate system is established on structural surface, and 3D displacement equations of structural vibration response are acquired through coordinate transformation. The algorithms of edge detection, center fitting and matching constraint are developed for circular target. A shaking table test of a masonry building model under Taft and El Centro earthquake at different acceleration peak is performed in lab, 3D displacement time histories of the model are acquired by the integrated stereovision measurement system. In-plane displacement curves obtained by two methods show good agreement, this suggests that the proposed method is reliable for monitoring structural vibration response. Out-of-plane displacement curves indicate that the proposed method is feasible and useful for monitoring 3D deformations of vibration response.
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Baohua Shan, Baohua Shan, Yunli Gao, Yunli Gao, Yu Shen, Yu Shen, } " Stereovision vibration measurement test of a masonry building model", Proc. SPIE 9803, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2016, 980350 (20 April 2016); doi: 10.1117/12.2224437; https://doi.org/10.1117/12.2224437
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