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New reduction factor for cracked multi-planar square hollow section TT-, YT- and KT-joints
HighlightsParametric study of cracked multi-planar square hollow section (SHS) joints.New Finite element mesh generator validated using experimental results.Axial tensile loading at the brace end.New equations for determining the reduction factor (FAR) are proposed.Crack area and the brace to chord width ratio affect strength of the SHS joints.
AbstractMany existing multi-planar structures such as bridges, buildings and others are fabricated using square hollow section (SHS) members. There are no guidance’s available in the design codes to assess the safety and integrity of these cracked multi-planar SHS joints till date. This paper proposes a new set of equations for determining the reduction factor of cracked multi-planar SHS TT-, YT- and KT-joints. A completely new and robust finite element (FE) mesh generator is developed and it is validated using the experimental test results. Parametric study is carried out for multi-planar 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 an important effect on the plastic collapse load of the cracked SHS joints. For a particular β value, the varies up to 4.37% for different values of crack area.
New reduction factor for cracked multi-planar square hollow section TT-, YT- and KT-joints
HighlightsParametric study of cracked multi-planar square hollow section (SHS) joints.New Finite element mesh generator validated using experimental results.Axial tensile loading at the brace end.New equations for determining the reduction factor (FAR) are proposed.Crack area and the brace to chord width ratio affect strength of the SHS joints.
AbstractMany existing multi-planar structures such as bridges, buildings and others are fabricated using square hollow section (SHS) members. There are no guidance’s available in the design codes to assess the safety and integrity of these cracked multi-planar SHS joints till date. This paper proposes a new set of equations for determining the reduction factor of cracked multi-planar SHS TT-, YT- and KT-joints. A completely new and robust finite element (FE) mesh generator is developed and it is validated using the experimental test results. Parametric study is carried out for multi-planar 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 an important effect on the plastic collapse load of the cracked SHS joints. For a particular β value, the varies up to 4.37% for different values of crack area.
New reduction factor for cracked multi-planar square hollow section TT-, YT- and KT-joints
Lie, S.T. (author) / Vipin, S.P. (author) / Li, T. (author)
Engineering Structures ; 139 ; 108-119
2017-02-14
12 pages
Article (Journal)
Electronic Resource
English
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