Parametric Analysis on the Circular CFST Column and RBS Steel Beam Joints

Rui Li; Yang Yu; Bijan Samali; Chengyu Li

doi:10.3390/ma12091535

Parametric Analysis on the Circular CFST Column and RBS Steel Beam Joints

Materials (Basel). 2019 May 10;12(9):1535. doi: 10.3390/ma12091535.

Authors

Rui Li¹, Yang Yu², Bijan Samali³, Chengyu Li⁴

Affiliations

¹ Centre for Infrastructure Engineering, Western Sydney University, Penrith, NSW 2751, Australia. r.li2@westernsydney.edu.au.
² Centre for Infrastructure Engineering, Western Sydney University, Penrith, NSW 2751, Australia. y.yu3@westernsydney.edu.au.
³ Centre for Infrastructure Engineering, Western Sydney University, Penrith, NSW 2751, Australia. yang.yu@uts.edu.au.
⁴ Urban Construction College, Wuhan University of Science and Technology, Wuhan 430065, China. lee_chengyu@163.com.

Abstract

This research analyzes the results of parametric studies of concrete-filled steel tubular (CFST) columns to the reduced beam section (RBS) beam joint with through diaphragm, using ANSYS. Several indices that are able to characterize the cyclic behavior of the composite joints are investigated, including the stiffness degradation, strength deterioration, stress distribution, and energy dissipation capacity. Four main model parameters, including the distance from the diaphragm edge to the cut start, the cut length, the cut depth, and inner diameter of through diaphragm, are analyzed via comparative studies to investigate their impacts on seismic properties of the joint. Finally, the orthogonal experiment is conducted to study the effects of these parameters on the strength and energy dissipation, the results of which are capable of achieving optimal seismic behavior of the joints.

Keywords: analysis of geometric parameters; concrete-filled steel tubular (CFST) column; diaphragm-through; finite element analysis; reduced beam section (RBS).