Seismic Behavior of a Steel Beam-to-Concrete-Filled Steel Tubular Column Connection Using External Diaphragms

Applied Sciences

Jose L. Ramirez Duque¹  Albio D. Gutierrez Amador²  Luis F. Gonzales Escobar²  Ruth E. Cano Buitron²  Gilberto Areiza Palma³  Cristhian Ramirez Ortiz³ 

[1] Civil and Industrial Engineering Department, Pontificia Universidad Javeriana Cali, Cali 760031, Colombia;Research Group in Fatigue and Surfaces, Universidad del Valle, Cali 760032, Colombia;School of Civil Engineering and Geomatics Engineering, Universidad del Valle, Cali 760032, Colombia;

关键词: beam-to-column connections;    composite structures;    cyclic loading;    plastic hinge;    special moment frames;   

DOI  :  10.3390/app12073618

来源: DOAJ

【 摘 要 】

This paper investigates the seismic behavior of a steel beam-to-concrete-filled steel tubular column connection with external diaphragms. In addition to the multiple advantages observed for manufacturing and assembly, this type of connection is expected to provide an adequate plasticizing mechanism based on its ductility, energy dissipation and moment resistance capacity. However, guidelines have not been provided for this type of connection within the AISC 358 standard, which makes experimental studies under cyclic loads necessary. This work presents such a study, which was carried out in accordance with the FEMA 350 standard for earthquake-resistant structures. The results for the failure modes, hysteretic performance, strength and stiffness degradation, rigidity classification and energy dissipation are provided and analyzed. The results indicate that this connection exhibits large hysteretic loops and develops ductility and dissipation capacity, as expected. More importantly, the maximum rotation of the beam was 0.07 rad with a resistant moment above 80% of the beam capacity measured from the face of the column. Thus, the ductility design requirements for earthquake resistance are met according to the current regulations. Consequently, the proposed connection is suitable for use in special moment frame structures located in areas of high seismic threat.

【 授权许可】

Unknown