Experimental performance of double built-up T moment connections under cyclic loading
Author
dc.contributor.author
Herrera Mardones, Ricardo
Author
dc.contributor.author
Salas, Constanza
Author
dc.contributor.author
Beltrán Morales, Juan Felipe
Author
dc.contributor.author
Nuñez, Eduardo
Admission date
dc.date.accessioned
2019-05-29T13:39:10Z
Available date
dc.date.available
2019-05-29T13:39:10Z
Publication date
dc.date.issued
2017
Cita de ítem
dc.identifier.citation
Journal of Constructional Steel Research 138 (2017) 742–749
Identifier
dc.identifier.issn
0143974X
Identifier
dc.identifier.other
10.1016/j.jcsr.2017.08.022
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/169034
Abstract
dc.description.abstract
Prequalification of the Double Split Tee (DST) connection has been conducted using hot-rolled shapes, whose availability is still limited in several countries. In addition, the range of available T web and flange thicknesses is narrow for these shapes. Thus, the use of built-up T-stubs on the DST connection seems to be a promising alternative, considering that they offer more freedom of sizing and allow a better use of the material. The experimental research reported here aimed to validate the use of built-up tees instead of hot rolled tees in DST moment connections. Four beam-to-column full-scale double built-up T (DBT) moment connections were subjected to cyclic loading following the prescribed loading history in AISC seismic provisions. The parameters varied among the specimens were the T flange thickness, the type of weld between the T flange and the stem (fillet weld or full penetration groove weld), and the column web thickness, in order to observe the most significant limit states of the connection, namely development of plastic hinges in beams, panel zone plastification, and T flange prying. The results indicate that the connection can sustain 4% drift without strength degradation, whether it is designed for T flange prying or beam hinging. In the case of the former, only limited permanent deformation of the flange is observed, while for the latter significant plastic deformation of the beam can be achieved with little or no damage of the T. The type of weld used has no significant effect on the connection performance.