Comparison of strengthening methods for tubular T joint corresponding to each static failure mode

Zafimandimby, Mampiandra N.H.; Liu, Yongjian; Yan, Biao; Jiang, Lei; Ma, Yinping

doi:10.1016/j.istruc.2021.12.021

Cited by 4 publications

(11 citation statements)

References 15 publications

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“…This means a difference in the percentage of material use (P m ) of 9.93%. These results confirm the strength of the novel joint type as compared to the integral joint type due to the existence of the concrete infill, which has higher compressive strength [2] and bending strength [42] than the hollowsection joint.…”

Section: Determination Of Deflection and Initial Stiffnesssupporting

confidence: 74%

“…This interaction has the ability to engage in "normal behaviour: hard contact" and tangential behavior as a "penalty with friction coefficient = 0.25". The steel material is meshed as "quadratic solid finite elements with reduced integration (C3D20R)" [2] with a mesh value of l 0 100 , whereas the concrete member is meshed in "linear solid finite integration, reduced integration, hourglass control (C3D8R)" [2] with a mesh value of l 0 50 , so as to reduce the overtime analysis. All the thicknesses in the elements are meshed with two layers for a more precise result.…”

Section: Numerical Simulation Modelmentioning

confidence: 99%

“…All the thicknesses in the elements are meshed with two layers for a more precise result. Even though these layers have been proven satisfactory for numerical simulation analysis in terms of initial stiffness [1] and ultimate strength [2,13], the present paper carries out result precision analysis through modifying the thicknesses of the layers as two, three, and four layers. Regarding the steel material's properties, elastic and plastic stages are introduced from the initial step, including the density, the elastic modulus, the yield stress, and the tensile strength.…”

Section: Numerical Simulation Modelmentioning

confidence: 99%

“…Truss structures are commonly used in beam bridges, suspension bridges, cable-stayed bridges, and arch bridges. A concrete-filled steel tube (CFST) is a type of strengthening that improves the overall truss resistance, including the initial stiffness [1], ultimate strength [2,3], and joint fatigue performance. Due to these benefits, the number of CFST bridges in China has grown over the last twenty years [4].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, several studies have address strengthening in order to retrofit hollow-section joints. One of the most relevant is carried out by Mampiandra N.H. Zafimandimby et al [2] for classification and comparison.…”

Section: Introductionmentioning

confidence: 99%

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Application of Novel Concrete-Filled Built-Up K-Joints with Different Brace Sections in a Double-Deck Truss Bridge with a Symmetric Deck System with Dense Crossbeams

Zafimandimby,

Liu,

Jiang

et al. 2023

Symmetry

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To facilitate the first application of the novel concrete-filled built-up K-joints with different brace sections in truss bridges, the present paper aims to determine their practicability through a comparison with integral joints. First, a structural analysis was carried out using the MIDAS CIVIL software to evaluate the loading applied to the structure. Additionally, boundary condition analysis was carried out. After that, the symmetric multi-planar joints were developed, using Abaqus 6.14 for the strength verification and the failure mode identification. These were followed by the multi-planar joints estimate cost. The results indicated that for positive bending, the novel joint deformed by 2.01 mm, compared to 4.83 mm for the integral joint in the serviceability limit state. These deformations were equal to 5.58 mm and 7.68 mm, respectively, in the negative bending. Verification under the ultimate limit state indicated a deformation of 10.43 mm for the novel joint type and 16.59 mm for the integral joint in the positive bending, whereas deformations of 15.89 mm and 16.82 mm were indicated in the negative bending. Moreover, a failure mode analysis showed a buckling of the arc yielding for the novel joint type and a buckling of the gusset plate for the integral joint. Finally, the results showed that the novel type of joint was more expensive by about CNY 111,286.06.

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Section: Determination Of Deflection and Initial Stiffnesssupporting

confidence: 74%

Section: Numerical Simulation Modelmentioning

confidence: 99%

Section: Numerical Simulation Modelmentioning

confidence: 99%