Please use this identifier to cite or link to this item:
http://hdl.handle.net/11375/24579
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Tait, Michael | - |
dc.contributor.author | Najafijozani, Mohammadreza | - |
dc.date.accessioned | 2019-06-21T15:16:23Z | - |
dc.date.available | 2019-06-21T15:16:23Z | - |
dc.date.issued | 2019 | - |
dc.identifier.uri | http://hdl.handle.net/11375/24579 | - |
dc.description.abstract | Seismic isolation systems are widely recognized as beneficial for protecting both acceleration- and displacement-sensitive nonstructural systems and components. Furthermore, adaptive isolation systems have been shown to enable engineers to achieve various performance goals under multiple hazard levels. These systems have been implemented for horizontal excitation, but there has been very limited research on isolation for vertical excitation. Thus, this paper seeks to evaluate the benefit of adaptive vertical isolation systems for component isolation, specifically for nuclear plants. To do this, three vertical isolation systems are designed to achieve multiple goals: a linear spring and a linear damper (LSLD), a linear spring and a nonlinear damper (LSND) and a nonlinear spring and a linear damper (NSLD). To investigate the effectiveness of the proposed systems, a stiff piece of equipment is considered at an elevated floor within a power plant. A set of 30 triaxial ground motions is used to investigate the seismic response of the equipment. The maximum isolation displacement and equipment acceleration are used to assess the effectiveness of the three isolation systems. While all systems significantly reduce the seismic accelerations on the equipment compared to the fixed-base case, a LSND system is shown to exhibit superior seismic performance across multiple hazard levels. | en_US |
dc.language.iso | en | en_US |
dc.subject | earthquake, seismic risk, seismic protection, equipment isolation, fragility curve | en_US |
dc.title | ADAPTIVE VERTICAL SEISMIC ISOLATION FOR EQUIPMENT | en_US |
dc.type | Thesis | en_US |
dc.contributor.department | Civil Engineering | en_US |
dc.description.degreetype | Thesis | en_US |
dc.description.degree | Master of Applied Science (MASc) | en_US |
Appears in Collections: | Open Access Dissertations and Theses |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Najafijozani_Mohammadreza_finalsubmission2019May_MASc.pdf | 1.64 MB | Adobe PDF | View/Open |
Items in MacSphere are protected by copyright, with all rights reserved, unless otherwise indicated.