000018865 001__ 18865
000018865 005__ 20170118182244.0
000018865 04107 $$aeng
000018865 046__ $$k2017-01-09
000018865 100__ $$aSalas, Constanza
000018865 24500 $$aExperimental Performance of Double Built-Up T Moment Connections

000018865 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018865 260__ $$b
000018865 506__ $$arestricted
000018865 520__ $$2eng$$aThe brittle failures detected during the 1994 Northridge earthquake on steel moment-frame buildings prompted significant investigations on steel moment connections. This work resulted in the proposal of several prequalified connections, including the Double Split Tee (DST) connection, to be used in beam-to-column moment joints of seismic resistant steel buildings. The DST connection is a partially restrained-full strength connection, which consists of two T-stubs bolted to the column flange and the beam top and bottom flanges. The prequalification process was conducted using hot-rolled shapes, whose availability is still limited in Chile and other countries. In addition, the range of usable T web and flange thicknesses is narrow for these shapes. These reasons led to study the use of built-up T-stubs as an alternative on the DST connection, considering that they offer a larger freedom of sizing and improved material utilization. This experimental research aims to validate the use of current design recommendations for the DST connection when built-up T shapes are used instead, by testing three beam-to-column full-scale welded T moment connections under cyclic loading. The parameter varied between the specimens was the T flange thickness, in order to observe the most significant limit states of the connection. The experimental data allowed the identification of the failure modes of the beam and connection, which were the development of plastic hinges and T flange prying effect, respectively. The results indicate that the major contributors to energy dissipation in the connection were the T flange prying and plastic hinging mechanisms, as predicted, and that the three Beam-to-Column connections accomplish the requirements for use in Special Moment Frames, in terms of acceptable strength degradation at a story drift angle of 0.04 rad, with no visible damage on the T-stubs’ welds.

000018865 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018865 653__ $$aMoment frame connection; failure modes; partially restrained.

000018865 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018865 720__ $$aSalas, Constanza$$iBeltrán, Juan Felipe$$iHerrera, Ricardo
000018865 8560_ $$ffischerc@itam.cas.cz
000018865 8564_ $$s1566793$$uhttps://invenio.itam.cas.cz/record/18865/files/2375.pdf$$yOriginal version of the author's contribution as presented on USB, paper 2375.
000018865 962__ $$r16048
000018865 980__ $$aPAPER