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Three dimensional temporal characteristics of ground motions and
building responses in Wenchuan earthquake
Dai Junwu1,
Wang Yanru1, Guan Qingsong1, Qi Xiaozhai1,
Yang Xueshan1, Tong Mai2 and George C. Lee3
1. Institute of Engineering Mechanics, China Earthquake
Administration, Harbin 150080, China
2. FEMA, Washington DC, USA
3. MCEER, University at Buffalo, USA
Abstract: In this paper, analytical results from 3D temporal
characteristics of the responses of an RC frame building
subjected to both a large aftershock and the main shock of Wenchuan
Ms8.0 earthquake are presented. The ground motion
records from the main shock were obtained from three nearby stations.
The acceleration records were analyzed in terms of
instantaneous tangential acceleration aT, normal acceleration aN,
Euclidean norm of acceleration vector |a|, velocity vector |v|,
displacement vector |v|, temporal curvature ¦Ê, ¦Êt, and temporal torsion
¦Ã and ¦Ãt. Results of the kinematic relationship between
the above factors and some additional in depth information obtained from
extensive analyses are provided and discussed.
Keywords: 3D temporal characteristics analyses; Wenchuan
earthquake; RC frame structure; aftershock
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