Reference Type:  Journal Article
Record Number: 1
Author: Chen , Y. and Shao, Y. B.
Year: 2012
Title: Static strength of square tubular y-joints with reinforced chord under axial compression
Journal: Advanced Steel Construction
Volume: 12
Issue: 3
Pages: 16
Start Page: 211
Short Title: Static strength of square tubular y-joints with reinforced chord under axial compression
DOI: 10.18057/IJASC.2016.12.3.1
Keywords: Square tubular T-joints, chord reinforcement, finite element, static strength, parametric equation
Abstract: Chord reinforcement is an available alternative to improve the static strength of the welded square tubular joints. Four full-scaled square tubular Y-joints are studied experimentally to investigate the effect of local chord reinforcement on their static strength. From experimental results, it is found that the static strength of a square tubular Y-joint can be improved greatly by increasing the chord thickness locally near the brace/chord intersection. The failure mode of an un-reinforced Y-joint can be changed from local yielding around the brace/chord intersection to flexural yielding of the chord member when the local chord thickness is increased to a critical value. In addition, finite element (FE) models for analyzing the static behavior of square tubular Y-joints are also presented, and the accuracy and reliability of these models have been evaluated by comparing the FE results with experimental results. Finally, influence of some parameters (Lc/d, β, γ and Tc/t0) on the static strength of square tubular Y-joints with local chord reinforcement is studied, and a parametric equation for predicting the static strength of square tubular Y-joints with local chord reinforcement under axial compression is presented. The accuracy of the presented equation is verified through error analysis.
Author Address: Professor, School of Mechatronic Engineering, Southwest Petroleum University, Chengdu, China