Techno Press


Steel and Composite Structures   Volume 15, Number 3, September 2013, pages 299-322
DOI: http://dx.doi.org/10.12989/scs.2013.15.3.299
 
Influence of steel-concrete interaction in dissipative zones of frames:
I − Experimental study
Gelu Danku, Dan Dubina and Adrian Ciutina

 
Abstract     [Full Text]
    In the case of seismic-resistant composite dual moment resisting and eccentrically braced frames, the current design practice is to avoid the disposition of shear connectors in the expected plastic zones, and consequently to consider a symmetric moment or shear plastic hinges, which occur only in the steel beam or link. Even without connectors, the real behaviour of the hinge may be different from the symmetric assumption, since the reinforced concrete slab is connected to the steel element close to the hinge locations, and also due to contact friction between the concrete slab and the steel element. The paper presents the results and conclusions of experimental tests on composite portal eccentrically braced frames and beam-to-column moment-resisting joints, carried out within the CEMSIG Research Centre of the Politehnica University of Timisoara, in order to check the validity of the assumption stated above. Reference steel and composite specimens with and without connectors in the plastic zones have been tested under monotonic and cyclic seismic type loading.
 
Key Words
    composite beams; plastic hinges; connectors; experimental tests
 
Address
Gelu Danku, Dan Dubina and Adrian Ciutina: Department of Steel Structures and Structural Mechanics, Faculty of Civil Engineering and Architecture \"The Politehnica\" University, Str. Ioan Curea No. 1, Timisoara, Romania.
 

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