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Seismic Response of Rocking Oscillators on a Soft Story: Elastic Response
| 题名： | Seismic Response of Rocking Oscillators on a Soft Story: Elastic Response |
| 其他题名： | Agha Beigi,H.,Sullivan,T.J.,Calvi,G.M.,and Christopoulos,C.(2012)."Characteristics affecting the vulnerability of soft storey mechanisms."Proc.,15th World Conf.of Earthquake Engineering,International Association for Earthquake Engineering,Tokyo. |
| 正文语种： | 英文 |
| 作者： | Christos Zeris |
| 关键词： | Rocking;Dynamic response;Concrete structures;Structural dynamics;Seismic design;Soft story buildings;Inelastic design;Seismic effects |
| 摘要： | The elastic response of a class of nonlinear oscillators that represent structural systems with a relatively rigid superstructure on a soft ground story is evaluated under lateral base excitation. The governing equations of motion are developed, accounting for both lateral translation and overturning rocking of the rigid superstructure relative to the flexible ground story. In this work, the system parameters are identified initially for linear elastic response and, subsequently, in a companion publication, for the case of the base exhibiting nonlinear resistance-deformation characteristics. The dynamic coupling between lateral and rocking modes is evaluated under a base excitation for different system period and resistance parameters, and the deformation and force demands are compared with the single-degree-of-freedom lateral-response-only predictions, as typically considered in seismic design. It is shown that the presence of rocking of the rigid superstructure causes an increase in the transverse deformation demands compared with conventional spectral estimates using the single-degree-of-freedom approach. |
| 出版年： | 2015 |
| 论文唯一标识： | P-26Y2015V141N08012 |
| 英文栏目名称： | Technical Papers |
| doi： | 10.1061/(ASCE)ST.1943-541X.0001157 |
| 期刊名称： | Journal of Structural Engineering |
| 拼音刊名(出版物代码)： | P-26 |
| 卷： | 141 |
| 期： | 08 |
| 页码： | 120-132 |
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