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http://dx.doi.org/10.12989/sss.2015.15.3.881

Drift displacement data based estimation of cumulative plastic deformation ratios for buildings  

Nishitani, Akira (Faculty of Science and Engineering, Waseda Univ.)
Matsui, Chisa (Tokyo Metropolitan Government)
Hara, Yushiro (Faculty of Science and Engineering, Waseda Univ.)
Xiang, Ping (Faculty of Science and Engineering, Waseda Univ.)
Nitta, Yoshihiro (Department of Architecture, Ashikaga Institute of Technology)
Hatada, Tomohiko (Kajima Technical Research Institute)
Katamura, Ryota (Kajima Technical Research Institute)
Matsuya, Iwao (Department of Mechanical Engineering, Nagaoka Univ. of Technology)
Tanii, Takashi (Faculty of Science and Engineering, Waseda Univ.)
Publication Information
Smart Structures and Systems / v.15, no.3, 2015 , pp. 881-896 More about this Journal
Abstract
The authors' research group has developed a noncontact type of sensors which directly measure the inter-story drift displacements of a building during a seismic event. Soon after that event, such seismically-induced drift displacement data would provide structural engineers with useful information to judge how the stories have been damaged. This paper presents a scheme of estimating the story cumulative plastic deformation ratios based on such measured drift displacement information toward the building safety monitoring. The presented scheme requires the data of story drift displacements and the ground motion acceleration. The involved calculations are rather simple without any detailed information on structural elements required: the story hysteresis loops are first estimated and then the cumulative plastic deformation ratio of each story is evaluated from the estimated hysteresis. The effectiveness of the scheme is demonstrated by utilizing the data of full-scale building model experiment performed at E-defense and conducting numerical simulations.
Keywords
inter-story drift displacement; hysteresis; cumulative plastic deformation ratio; E-defense;
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