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تحلیل لرزه ای سازه های چنددرجه آزادی مجهز به میراگر فلزی تسلیم شونده تلسکوپی
بخشنده، سعید Bakhshandeh, Saeed
Seismic Analysis of Multi-Degree Freedom Structures Equipped with Telescopic Metallic Yield Dampers (TLYD)
Bakhshandeh, Saeed | 2022
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- Type of Document: M.Sc. Thesis
- Language: Farsi
- Document No: 55517 (09)
- University: Sharif University of Technology
- Department: Civil Engineering
- Advisor(s): Eskandari, Morteza
- Abstract:
- Ordinary structures absorb a large amount of input energy by structural elements whereas failure in these elements causes a huge loss in structure and it’s really difficult to repair or unrepairable. Nowadays a wide range of metallic dampers is used in structures as fuse elements. this research evaluates the response of structures that are equipped with a novel steel damper named Telescopic Lead Yield Damper (TLYD) which was introduced by Eskandari in 2018. As TLYD has a different yielding plateau it can tolerate large deformations. In this research firstly this novel damper was introduced and the performance of the damper under cyclic loading was demonstrated. Then a numerical model of 6, 8, and 12-story steel structures were modeled in OpenSEES. Nonlinear time history analyses were conducted by 7 earthquake records under two different earthquake levels, design base earthquake (DBE) and maximum credible earthquake (MCE). moreover, Results were compared with the response of the same structures with no-dampers and viscous dampers. Results show that TLYDs are more effective for middle-height structures (up to 8 stories) than viscous dampers, on the other hand, higher height structures equipped with viscous dampers are more capable to maintain structural performance.
- Keywords:
- Passive Control ; Numerical Modeling ; Metallic Damper ; Nonlinear Analysis ; Telescopic Damper ; OpenSees Software ; Seismic Analysis ; Metallic Yield Damper
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