Bidirectional response ofWeak-Axis end-plate moment connections: numerical approach
Author
dc.contributor.author
Núñez, Eduardo
Author
dc.contributor.author
Parraguez Cáriz, Guillermo
Author
dc.contributor.author
Herrera Mardones, Ricardo
Admission date
dc.date.accessioned
2020-11-02T19:58:41Z
Available date
dc.date.available
2020-11-02T19:58:41Z
Publication date
dc.date.issued
2020
Cita de ítem
dc.identifier.citation
Metals 2020, 10, 964
es_ES
Identifier
dc.identifier.other
10.3390/met10070964
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/177497
Abstract
dc.description.abstract
Brittle failure mechanisms can affect the seismic performance of structures composed of intersecting moment resisting frames, if the biaxial effects are not considered. In this research, the bidirectional cyclic response of H-columns with weak-axis moment connections was studied using numerical models. Several configurations of joints with bidirectional effects and variable axial loads were studied using the finite element method (FEM) in ANSYS v17.2 software. The results obtained showed a ductile behavior when cyclic loads are applied. No evidence of brittle failure mechanisms in the studied joint configurations was observed, in line with the design philosophy established in current seismic provisions. However, beams connected to the column minor axis reached a partially restrained behavior. Joints with four beams connected to the column exhibited a partially restrained behavior for all axial load levels. An equivalent force displacement method was used to compare the hysteretic response of 2D and 3D joints, obtaining higher deformations in 3D joints with respect to 2D joints with a similar number of connected beams. Consequently, design procedures are not capable of capturing the 3D deformation phenomenon.