TA project: DUAREM

Update: Click here to download an amended version of the final report

A concise presentation of the project's progress is available at the Joint brochure of the SERIES TA facilities.

TITLE OF PROPOSAL: Full-scale experimental validation of dual eccentrically braced frame with removable links

HOST TA FACILITY: 
ELSA, JRC, Ispra, Italy

TA AGREEMENT BETWEEN USERS AND FACILITY: 24 September 2010

STARTING DATE: June 2010

END DATE: July 2013

NO. OF USERS (researchers):
13

LEAD USER:
Dan Dubina - "Politehnica" University of Timisoara (Romania)

ADDITIONAL USERS:
Jean-Pierre Jaspart - University of Liege (Belgium)
Raffaele Landolfo - University of Naples Federico II (Italy)
Darko Beg - University of Ljubljana (Slovenia)
Luis Simoes da Silva - University of Coimbra (Portugal)
Daniel Grecea - "Politehnica" University of Timisoara (Romania)
Aurel Stratan - "Politehnica" University of Timisoara (Romania)
Florea Dinu - "Politehnica" University of Timisoara (Romania)
Adrian Ciutina - "Politehnica" University of Timisoara (Romania)
Adrian Dogariu - "Politehnica" University of Timisoara (Romania)
Gelu Danku - "Politehnica" University of Timisoara (Romania)
Nicolae Muntean - "Politehnica" University of Timisoara (Romania)
Sorin Bordea - "Politehnica" University of Timisoara (Romania)

SUMMARY OF PROPOSED RESEARCH:

Current seismic design philosophy is based on dissipative structural response, which implicitly accepts damage to the main structure and significant economic losses. Repair of the structure is often impeded by the permanent (residual) drifts of the structure. The proposed research aims at reducing the repair costs and downtime of a structure hit by an earthquake, and consequently a more rational design approach in the context of sustainability. These objectives are to be attained through the concepts of removable dissipative members and re-centring capability of the structure. The concepts will be implemented in a dual structure, obtained by combining steel eccentrically braced frames with removable bolted links with moment resisting frames. The bolted links are intended to provide the energy dissipation capacity and to be easily replaceable, while the more flexible moment resisting frames would provide the necessary re-centring capability to the structure. The moment resisting frames and the columns of the eccentrically braced frames are to be constructed from high strength steel, in order to keep these members in the elastic range even under strong seismic input.
The validation of the proposed solution is to be achieved through a pseudo-dynamic test of a full-scale model of a dual eccentrically braced structure. The research will demonstrate the feasibility of the proposed concept (re-centring capability of dual structures with removable dissipative members), clearing the route towards implementation into design practice. Additionally, the overall seismic performance of dual eccentrically braced frames will be validated. Full-scale test will provide valuable information on the interaction between the steel frame and the reinforced concrete slab in the link region, for which virtually no experimental exists.

What's next

Series logo small   SERIES Concluding Workshop
  Joint with US-NEES "Earthquake Engineering Research Infrastructures

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