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Steel and Composite Structures
  Volume 14, Number 6, June 2013 , pages 547-569
DOI: https://doi.org/10.12989/scs.2013.14.6.547
 


Hysteretic behavior of dissipative welded fuses for earthquake resistant composite steel and concrete frames
Luis Calado, Jorge M. Proenca, Miguel Espinha and Carlo A. Castiglioni

 
Abstract
    In recent years there has been increasing international interest about designing structures thatcost less to repair after they have been subjected to strong earthquakes. Considering this interest, aninnovative repairable fuse device has been developed for dissipative beam-to-column connections inmoment-resisting composite steel and concrete frames. The seismic performance of the device was assessedthrough an extensive experimental program comprising ten cyclic and two monotonic tests. These tests wereconducted on a single beam-to-column specimen with different fuse devices for each test. The devicesvaried in terms of the chosen geometric and mechanical parameters. The tests showed that the devices wereable to concentrate plasticity and to dissipate large amounts of energy through non-linear behavior.Numerical models were developed with Abaqus and simplified design models are also proposed.
 
Key Words
    welded fuse device; reparability; cyclic tests; hysteretic behavior; plate buckling; energy dissipation; numerical models; design models
 
Address
1 Luis Calado, Jorge M. Proenca, Miguel Espinha: Department of Civil Engineering and Architecture, Instituto Superior Tecnico, Technical University of Lisbon, Av. Rovisco Pais 1, 1049-001 Lisbon, Portugal; 2 Carlo A. Castiglioni: Structural Engineering Department, Politecnico di Milano, Piazza L. da Vinci, 32 - 20133 Milan, Italy
 

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