[Structural Engineering]

Xuhong Zhou, Guozhong Cheng, Jiepeng Liu*, Yuanlong Yang, Y. Frank Chen. Shear transfer behavior at the circular tubed column-steel beam interface. Thin-Walled Structures, 2019, 137: 40-52.

Keywords:Tubed column; Shear transfer behavior; Finite element analysis; Effective width method; Capacity

High Lights:

ŸFive beam-column connection specimens with crossing diaphragm were tested to investigate the shear transfer behavior of the interface between circular tubed column and steel beam.

ŸThe embedded diaphragm at the connection was adopted to ensure the shear transfer at beam ends.

ŸA simplified finite element model was developed and validated with the experimental results.

ŸPractical formulas for estimating the shear transfer capacity are suggested.

Abstract:

This paper discusses the shear transfer behavior at the interface between circular tubed column and steel beam. Five beam-column connection specimens with crossing diaphragm were tested under monotonic loads, considering the key parameters of joint tube thickness, embedded diaphragm width, and crossing diaphragm thickness. Based on the experimental results, typical failure modes and load-displacement curves were obtained and discussed in details. A simplified finite element model was developed and validated with the experimental results. Parametric studies on the shear transfer capacity were carried out and analyzed. Lastly, practical formulas for estimating the shear transfer capacity are suggested.