Abstract
A novel retrofitting application for pinned beam–column connections in RC precast frames was investigated from experimental and numerical perspectives. The application is based on the insertion of a lead extrusion damper (LED) in regions of beam–column connection of precast RC frames. The bending moment and deformations at the column base tends to decrease with increased damping, and the shear force at the connection of the LED on the structural member increases with the insertion of an LED. Half-scale non-retrofitted and retrofitted specimens were tested on a shake table. In addition, nonlinear dynamic time history analyses were carried out. The structural behaviors of non-retrofitted and retrofitted specimens were compared based on the experimental and numerical results. Ultimate displacement and story drift of the precast frame, the bending moment and plastic deformations at the column base were significantly reduced via the insertion of an LED. Also, the numerical results are in agreement with the experimental results.
Original language | English |
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Pages (from-to) | 1273-1292 |
Number of pages | 20 |
Journal | Bulletin of Earthquake Engineering |
Volume | 16 |
Issue number | 3 |
DOIs | |
Publication status | Published - 1 Mar 2018 |
Bibliographical note
Publisher Copyright:© 2017, Springer Science+Business Media B.V.
Funding
Acknowledgements The experimental part of this study was conducted in the Structural and Earthquake Engineering Laboratory (STEELab) of Istanbul Technical University (ITU). The authors acknowledge M.Sc. Tansu Gokce and the laboratory staff for their support. Funding for this research was provided by the ITU Department of Scientific Research Projects of 34285, 34014. The contributions made by the Irmak Cagdas Makina Company for the development of the LED and the Emek Prefabrik Company for the manufacturing of the precast members are gratefully acknowledged.
Funders | Funder number |
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ITU Department of Scientific Research Projects of | 34014, 34285 |
Keywords
- Lead extrusion damper
- Passive energy dissipation systems
- Pinned beam–column connections
- RC precast frames
- Retrofitting