Retrofitting of pinned beam–column connections in RC precast frames using lead extrusion dampers

Cihan Soydan, Ercan Yüksel*, Erdal İrtem

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

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 languageEnglish
Pages (from-to)1273-1292
Number of pages20
JournalBulletin of Earthquake Engineering
Volume16
Issue number3
DOIs
Publication statusPublished - 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.

FundersFunder number
ITU Department of Scientific Research Projects of34014, 34285

    Keywords

    • Lead extrusion damper
    • Passive energy dissipation systems
    • Pinned beam–column connections
    • RC precast frames
    • Retrofitting

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