Static and fatigue design of CHS-to-RHS welded connections using a branch conversion method

“…The existing S-N curves for tubular connections [1,2,5,6], developed through experimental data accumulated over decades of research efforts [7][8][9][10][11][12][13][14][15][16], estimate the fatigue life of tubular joints with CJP welds corresponding to the through-thickness propagation of weld toe cracks at hot-spot locations. Qian et al [3] showed, through a detailed finite element investigation, that the stress concentration factor (SCF) near the weld toe of the enhanced partial joint penetration welds in a tubular joint are similar to those computed near the toe of the complete joint penetration welds of the same tubular joint.…”

Section: Introductionmentioning

confidence: 99%

Fatigue performance of tubular X-joints with PJP+ welds: I — Experimental study

Qian

Petchdemaneengam

Swaddiwudhipong

et al. 2013

Journal of Constructional Steel Research

View full text Add to dashboard Cite

“…(1) Some research studies [24,25] have analyzed the mechanical properties of different truss joint types, and the overlapping form is first designed according to Eurocode 3 Design of Steel Structures [11] and CIDECT Design Guide [13], which provide a design method for N-type overlap joint of hollow section truss joints. Figure 14(a) shows the FE model of preliminary joint design form, and the overlap rate is more than 25% to ensure the force transfer of the weld.…”

Section: Overlap Joint Form Of the Truss And Beam Membermentioning

confidence: 99%

Test and Numerical Study on Monotonic Behavior of Complex CFT Column Joints

Yang

Jia

et al. 2019

Advances in Civil Engineering

View full text Add to dashboard Cite

This paper presents a test and numerical investigation into the monotonic behavior of three different complex steel trusses to concrete-filled tubular (CFT) column joints. Based on an engineering structure, 1 : 4 reduced-scale specimens are manufactured and the three-dimensional subassembly testing system is designed to apply the monotonic load. Test phenomena and load-stress curves show that all three types of joints have a considerable load-carrying capacity and joint rigidity. Finite element (FE) analysis is adopted, and the stress distribution shows good agreement with test data. Both test and FE results show that local buckling and yielding in the root region of steel truss are the main failure modes of test joints and the core area of the CFT column remains intact which are in accordance with the design conception of “strong column and weak beam.” Design conception of proposed overlap joint form is then investigated based on the FE model, and results show that the optimized overlap joint can effectively reduce the stress concentration in the adjacent steel tube and beam member when compared to the traditional N-type overlap joint. Finally, the influence of the outer diaphragm on the stiffness of joint is analyzed. By comparing the end-displacement of the beam member, conclusion can be obtained that the beam flange thickness is suggested to be chosen as the outer diaphragm thickness. The forms of three different proposed joints and their design conceptions can provide good guidance for designers and engineers.

show abstract

Static and fatigue design of CHS-to-RHS welded connections using a branch conversion method

Cited by 23 publications

References 9 publications

Stress concentration factors of diamond bird-beak SHS T-joints under brace loading

Stress concentration factors of diamond bird-beak SHS T-joints under brace loading

Fatigue performance of tubular X-joints with PJP+ welds: I — Experimental study

Test and Numerical Study on Monotonic Behavior of Complex CFT Column Joints

Contact Info

Product

Resources

About