Development and application of negative stiffness devices for seismic response control of highway bridge structures
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Authors
Khaje Ahmad Attary, Navid
Issue Date
2013-12
Type
Electronic thesis
Thesis
Thesis
Language
ENG
Keywords
Civil engineering
Alternative Title
Abstract
In this dissertation, the negative stiffness devices are described along with their hysteretic behavior as obtained from a series of cyclic tests which were utilized to calibrate the parameters of a numerical model. In addition, results from numerical simulations and seismic testing of a quarter-scale bridge model are presented wherein the bridge was configured with various isolation system components (isolation bearings, negative stiffness devices, and viscous dampers). In addition, the bridge was designed to mimic either a single-span bridge supported on abutments or an interior span of a multi-span bridge. The results of the investigation clearly demonstrate the effectiveness of the negative stiffness devices in limiting the seismic response of the bridge for multiple bridge configurations. Furthermore, motivated by the need for a more compact device, the development phase of the project led to a new concept for creating negative stiffness wherein translational motion of the bridge is transformed to rotational motion. The conceptual development of the device is presented along with analytical models and numerical simulation results that demonstrate its ability to provide superior seismic protection.
Description
December 2013
School of Engineering
School of Engineering
Full Citation
Publisher
Rensselaer Polytechnic Institute, Troy, NY