A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
New reduction factor for cracked square hollow section T-joints under axial loading
Abstract This paper proposes a new expression for determining the reduction factor (F AR) of cracked square hollow section (SHS) joints. The F AR when multiplied with the ultimate strength of uncracked SHS joints, gives the ultimate strength of cracked SHS joints. A completely new and robust finite element mesh generator is developed to generate models for cracked SHS welded joints. The newly developed automatic mesh generator is validated using the experimental results. Parametric study is carried out for SHS joints subjected to axial loading at the brace end. The results reveal that the crack area and the brace to chord width ratio (β) have a significant influence on the ultimate strength of the cracked SHS joints. It is observed that for a particular crack area, the variation of the F AR values is up to 3.29% for different values of β. The results also show that the F AR values calculated using the existing equation for circular hollow section (CHS) joints are conservative in nature with percentage difference of up to 22.67%.
Highlights Parametric study of cracked square hollow section (SHS) T-joints. New Finite element mesh generator validated using experimental results. Axial tensile loading at the brace end. New expressions for determining the reduction factor (F AR) are proposed. Crack area and the brace to chord width ratio affect strength of the SHS joints.
New reduction factor for cracked square hollow section T-joints under axial loading
Abstract This paper proposes a new expression for determining the reduction factor (F AR) of cracked square hollow section (SHS) joints. The F AR when multiplied with the ultimate strength of uncracked SHS joints, gives the ultimate strength of cracked SHS joints. A completely new and robust finite element mesh generator is developed to generate models for cracked SHS welded joints. The newly developed automatic mesh generator is validated using the experimental results. Parametric study is carried out for SHS joints subjected to axial loading at the brace end. The results reveal that the crack area and the brace to chord width ratio (β) have a significant influence on the ultimate strength of the cracked SHS joints. It is observed that for a particular crack area, the variation of the F AR values is up to 3.29% for different values of β. The results also show that the F AR values calculated using the existing equation for circular hollow section (CHS) joints are conservative in nature with percentage difference of up to 22.67%.
Highlights Parametric study of cracked square hollow section (SHS) T-joints. New Finite element mesh generator validated using experimental results. Axial tensile loading at the brace end. New expressions for determining the reduction factor (F AR) are proposed. Crack area and the brace to chord width ratio affect strength of the SHS joints.
New reduction factor for cracked square hollow section T-joints under axial loading
Lie, S.T. (author) / Vipin, S.P. (author) / Li, T. (author)
Journal of Constructional Steel Research ; 112 ; 221-227
2015-04-25
7 pages
Article (Journal)
Electronic Resource
English
New reduction factor for cracked square hollow section T-joints under axial loading
| Online Contents | 2015
New reduction factor for Cracked Square hollow section K-joints
| British Library Online Contents | 2018
New reduction factor for Cracked Square hollow section K-joints
| British Library Online Contents | 2018
New reduction factor for Cracked Square hollow section K-joints
| British Library Online Contents | 2018
Static Strength of Cracked Square Hollow Section T Joints under Axial Loads. I: Experimental
| British Library Online Contents | 2006