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Lecture

Innovative frictional damping devices and their implementation as a retrofit system for existing industrial buildings

Event organised by Society for Earthquake and Civil Engineering Dynamics

Date
11 June 2024
Time
18:00 - 19:30 BST (GMT+1)
Location
University of Bristol
Pugsley Lecture Theatre
Queens Building
University Walk
Bristol, BS8 1TR
United Kingdom

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Overview

This event will cover innovative frictional damping devices that can effectively improve the performance of precast reinforced concrete structures and post-tensioned frames under seismic motion. 

Precast reinforced concrete (RC) structures with poor connections and reinforcement detailing often face a significant seismic risk. The need for structural connection improvement and minimally invasive energy dissipation devices in such structures, brought to the concept of dissipative beam-to-column joints, meeting both requirements in one device.

The first talk shows the conceptualisation, prototyping, mechanical and numerical definition of an innovative bidirectional rotational friction damper called DoubleDamp. The results show that such a system can effectively improve a precast RC structure’s behaviour during seismic events with good and steady hysteresis cycles.

The second talk discusses a novel SKID device proposed for application within PT frames. The SKID device features no activation threshold, thus preserving the inherent self-centring capability of the PT frames. It provides additional damping and 'post-yield' stiffness for seismic protection. Its mechanical schematisation is discussed and physically demonstrated by eight 1/4 scaled specimens. Then, its application in the PT frames is presented. The seismic performance of the PT-SKID frames is investigated, with a highlight on the self-centring feature. Finally, a Direct-Displacement Based Design (DDBD) procedure with a correction factor is proposed for the PT-SKID frames.

Organised by

The Society for Earthquake and Civil Engineering Dynamics

The Society for Earthquake and Civil Engineering Dynamics

SECED promotes the study and practice of earthquake and civil engineering dynamics, including blast, impact, and other vibration problems.

Speakers

Eleonora Grossi

Eleonora Grossi

University of Ferrara

postdoctoral fellow

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Eleonora Grossi

Eleonora Grossi holds a master’s degree in civil engineering from the University of Ferrara (Italy) and will complete her PhD in engineering science at the University of Ferrara in late spring 2024. Her doctoral research focused on developing a damping system for the seismic protection of precast RC buildings, combining concepts of tribology, mechanical design, and numerical analysis. Eleonora is currently a postdoctoral fellow at the Engineering Department of the University of Ferrara.

Yichen Zhang

Yichen Zhang

University of Bristol

research associate

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Yichen Zhang

Yichen Zhang is a research associate at the University of Bristol. He holds a PhD in civil engineering (Bristol). His research interests are in earthquake engineering and structural dynamics. He is currently involved in the LASSIE project, focusing on the residual displacement reduction design of a low-cost isolation system.

For more information please contact:

Shelly-Ann Russell

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