Sensitivity of special steel moment frames to the influence of column-base hysteretic behavior including gravity framing system

Pablo Torres-Rodas, Francisco Flores, Bryam X. Astudillo, Sebastian Pozo

Producción científica: Capítulo del libro/informe/acta de congresoContribución a la conferenciarevisión exhaustiva

5 Citas (Scopus)

Resumen

Special Steel Moment Frames (SMFs) are one of the most common lateral-load resisting systems. Hysteretic energy in these systems is dissipated by the development of plastic hinges at the end of the beams. In order to guarantee the desired collapse mechanism, columns, beam-column, and column base connections are sized employing the capacity design-criteria. Recent research on column base plates indicates that these connections pose high deformation capacity and may be used as part of the dissipative energy system. These findings have motivated studies to evaluate a possible strong-column weak-base connection criterion, implying a reduction on the base demands and, consequently, a nonlinear incursion of these connections. The implication is a potential reduction of connection costs at similar building performance. However, these studies have neglected the influence of the gravity system on the seismic performance of the SMFs analyzed. Consequently, a study that includes the profound influence of gravity system while investigates the consequences of seismic demands reduction of base plates has not been conducted. Against this backdrop, this research presents a parametric study conducted on an 8-story SMF, which evaluates the probability of collapse considering three different levels of base connection strength while including the gravity system. Results indicate that gravity systems tend to enforce the building to deform on the first mode of shape even at large floor displacements while base rotations are increased significantly. The design implication is that base-connections should be kept designed to carry the plastic capacity of the column.

Idioma originalInglés
Título de la publicación alojadaEURODYN 2020 - 11th International Conference on Structural Dynamics, Proceedings
EditoresManolis Papadrakakis, Michalis Fragiadakis, Costas Papadimitriou
EditorialEuropean Association for Structural Dynamics
Páginas3629-3642
Número de páginas14
ISBN (versión digital)9786188507210
EstadoPublicada - 2020
Evento11th International Conference on Structural Dynamics, EURODYN 2020 - Virtual, Athens, Grecia
Duración: 23 nov. 202026 nov. 2020

Serie de la publicación

NombreProceedings of the International Conference on Structural Dynamic , EURODYN
Volumen2
ISSN (versión impresa)2311-9020

Conferencia

Conferencia11th International Conference on Structural Dynamics, EURODYN 2020
País/TerritorioGrecia
CiudadVirtual, Athens
Período23/11/2026/11/20

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