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Negative Stiffness Device for Seismic Protection of Structures: Shake Tabie Testing of a Seismically Isolated Structure
| 题名： | Negative Stiffness Device for Seismic Protection of Structures: Shake Tabie Testing of a Seismically Isolated Structure |
| 正文语种： | 英文 |
| 作者： | A. A. Sarlis;D. T. R. Pasala;Michael C. Constantinou, M.ASCE; Andrei M. Reinhorn, F.ASCE;Satish Nagarajaiah, M.ASCE; Douglas P. Taylor |
| 作者单位： | Univ, at Buffalo (SUNY);Rice Univ;Taylor Devices Inc |
| 关键词： | Negative Stiffness Device for Seismic Protection of Structures: Shake Tabie Testing of a Seismically Isolated Structure |
| 摘要： | The concept of apparent weakening by adding true negative stiffness to a structure has been previously introduced by the authors in order to reduce simultaneous drifts, accelerations, and displacements in a structure without yielding or permanent deformation in the main system. A novel negative stiffness device (NSD) that generates true negative stiffness has been developed, built, and tested and has been previously described by the authors in terms of operation and analytical and numerical modeling. This paper presents results that represent ,proof-of-concept for weakening with the use of the NSD based on the shake table testing of a 3-story seismically isolated structure, equipped with these devices complemented by viscous dampers. The NSD is shown to have a significant effect on the superstructure response by reducing floor accelerations, story drift, and the base shear and upon the addition of dampers, also results in a reduction in isolator displacements. Moreover, this paper provides validation of the analytical models that were previously developed by comparison of analytical and experimental results. DOI: 10.106l/(ASCE)ST.1943-541X.0001455. © 2016 American Society of Civil Engineers. |
| 出版日期： | 2016.05 |
| 出版年： | 2016 |
| 期刊名称： | Journal of Structural Engineering |
| 卷： | Vol.142 |
| 期： | NO.05 |
| 页码： | 04016005 |
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