Analysis of steel bolted end-plate joints under accidental situation

Kukla, Damian; Kozłowski, A.

doi:10.1201/9781003132134-40

Cited by 5 publications

(13 citation statements)

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“…A new ideas for improving the load capacity and rotational capacity of extended bolt end-plate joints under large deformations were presented in [10]. Based on experimental [9] and numerical observations [11] of joint behavior additional elements (Fig. 1) such as additional rings (AR) was proposed to improve structural robustness of steel moment frame.…”

Section: Conception To Improve Joint Performancementioning

confidence: 99%

“…The numerical analysis of AR joints were conducted at previously validated models as presented in paper [11] based on experimental tests [9] of pure double side flush end-plate joints. The results of validation of FEA model with experimental test results in Fig.…”

Section: Numerical Analysis Of Ar Jointmentioning

confidence: 99%

“…The bolts connector were meshed singly, where a main mesh density equal 3,5 mm was assumed. Other important information and assumptions about finite element analysis of joints in paper [11] are presented.…”

Section: Numerical Analysis Of Ar Jointmentioning

confidence: 99%

“…As second, the feature to obtain considerable deformation of joints components without brittle fracture is required. Based on quasi-static experi-mental tests [8,9] and numerical analysis [10,11] the significant moment-capacity and rotational-capacity of flush end-plate joints were presented. As one major of disadvantages this type of joints a premature fracture of bolts were observed as failure mode.…”

Section: Introductionmentioning

confidence: 99%

“…Among main advantages of semi-rigid steel joints in permanent design situation the load-capacity and rotational-capacity are presented. In case of accidental situation as internal column loss scenario an additional features of joints as key elements of structure [7] are required under robustness analysis. As a first one, the ability to create secondary mechanism with significant development of tension forces called catenary action must be observed.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Novel bolted steel joint to improve anti‐collapse resistance of steel structure

Kozlowski,

Kukla

2023

ce papers

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As a joints play a significant role in load transfer both in persistent and accidental situation an attempt to improve structural robustness under column loss situation was made. Based on previously conducted experimental tests of bolted double side steel end‐plate joints and numerical analysis a development to increase load‐capacity and rotational capacity of joints under column loss scenario was presented. Finite element method using Abaqus software with 3D numerical models were employed. Validated and complex models with geometrical and material non‐linearity with fracture simulation were applied. The application of additional double rings to bolted steel flush end‐plate joint lead to significant increase of load‐capacity and rotational‐capacity. The change of failure mode of joint were also obtained compared to the original specimen.

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Section: Conception To Improve Joint Performancementioning

confidence: 99%

Section: Numerical Analysis Of Ar Jointmentioning

confidence: 99%

Section: Numerical Analysis Of Ar Jointmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Novel bolted steel joint to improve anti‐collapse resistance of steel structure

Kozlowski,

Kukla

2023

ce papers

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Numerical Study of the Robustness of Steel Frames with Bolted End-Plate Joints Subjected to Sudden and Gradual Internal Column Loss

Kukla

Kozłowski

2023

Int J Steel Struct

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The research project was carried out to estimate the robustness of flat steel-framed structures in a selected accidental situation. For this purpose, a multistage approach based on experimental tests and numerical analysis was performed. As the main objective of the work, a numerical dynamic analysis of the steel frames was performed under a sudden and gradual internal column loss scenario. FEA models were created in Abaqus software using solid and shell elements. Computer analyzes were carried out in a number of different cases, taking into account the size of the structure, the type of joints, and the method of removing the column from the structure. Detailed results on the axial forces and rotation of the joints under analysis are presented, and the robustness of the structures is estimated. In all cases of frames with flush end-plate joints, an insufficient level of robustness was observed and failures of the structures were obtained. In the cases of application of extended end-plate joints in frame analysis, the required level of robustness was reached in all cases and the stop of collapse was obtained. Finally, practical recommendations for designing robust joints and the whole frame structure are presented.

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Archives of Civil Engineering

Kukla,

Kozlowski

2022

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The current design codes recommend designing the building structures based on the assumption avoiding the disproportionate to the initial cause damage during accidental situation. As a main strategy to mitigate a progressive collapse an alternative load path method is recommended. Flush and extended bolted end-plate joint to connect beam-to-column were experimentally tested. Hierarchical validation of joint FEM models based on experimental test results were performed. The numerical dynamic analysis by finite element method of selected steel frame under column loss scenario is presented. The planar 2D model of frame were used. Shell elements for beams and columns and solid elements for joints were employed respectively. Nonlinear material and geometry were applied in the analysis. Johnson-Cook model was used to describe the change of steel parameters by dynamic Increase Factor (DIF). The Rayleigh model to include the damping effects in the analysis was used. The dynamic analysis was performed with the use of Abaqus/Explicit module. Main conclusion of presented research it that to achieve the required level of robustness, bolted beam-to-column joints with extended end-plate of thickness more than 15 mm should be used.

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Analysis of steel bolted end-plate joints under accidental situation

Cited by 5 publications

References 0 publications

Novel bolted steel joint to improve anti‐collapse resistance of steel structure

Novel bolted steel joint to improve anti‐collapse resistance of steel structure

Numerical Study of the Robustness of Steel Frames with Bolted End-Plate Joints Subjected to Sudden and Gradual Internal Column Loss

Archives of Civil Engineering

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