The behavior of top and seat bolted angle connections under blast loading

Daryan, Amir Saedi; Ziaei, Masoud; Sadrnejad, S. A.

doi:10.1016/j.jcsr.2011.03.020

Cited by 16 publications

(6 citation statements)

References 19 publications

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“…Through finite element analysis on the dynamic response of steel frame structures under blast loading, Urgessa et al [2] obtained the advantages and disadvantages of three types of joints. In addition, Daryan et al [3] conducted finite element analysis on the joints connected by upper and lower flange angle steel under blast loading, and discussed the failure mode and applicability of the joints. Furthermore, Wu [4] studied the effects of explosive blast load, stiffener setting, and axial compression ratio of columns on the dynamic response of joints in beams and columns under blast loading.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Response Parameter Analysis of Steel Frame Joints under Blast Loading

Kou

Zhang

et al. 2022

Buildings

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A finite element model of steel frame joints is established using finite element analysis software ANSYS/LS-DYNA. The ideal triangular impact load is used to numerically analyze the dynamic response of steel frame welded joints under blast loading, the main factors affecting this response, and the failure modes of three types of joints, so as to provide reference for the antiexplosive design of steel frame joints. The results show that steel frame joints vibrate violently in the explosive blast direction. Due to the strain rate effect, the strength of steel increases, the material enters the plastic strengthening stage, and there is a certain residual displacement. In addition, displacement and stress caused by blast action in the joint area are large, and the flange shear failure of the beam and column is prone to occur in the joint. Increasing the flange width of the beam and the column cannot improve the antiexplosive performance of the joints, while increasing their thickness can. Furthermore, bolted and welded joints have the highest stiffness and best antiexplosion performance, followed by welded joints, while the antiexplosion performance of bolted joints was the worst.

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Section: Introductionmentioning

confidence: 99%

Dynamic Response Parameter Analysis of Steel Frame Joints under Blast Loading

Kou

Zhang

et al. 2022

Buildings

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“…On the other hand, the behaviour of steel joints subjected to severe impulsive loading is less documented. In the past decade, after the attack on the World Trade Center in New York in 2001, there has been increased interest in the behaviour of steel structures under extreme loading conditions [1][2][3][4][5]. The design code Unified Facilities Criteria [6] states that joints subjected to blast loads should have adequate strength, stiffness, and rotation capacity.…”

Section: Introductionmentioning

confidence: 99%

An experimental study of static and dynamic behaviour of bolted end-plate joints of steel

Grimsmo

Clausen

Langseth

et al. 2015

International Journal of Impact Engineering

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Many actions, such as accidental or malicious explosions, may impose high loading rates to structural frames. To enhance the knowledge of the behaviour of joints subjected to severe impulsive loading, a double-sided beam-to-column joint configuration was tested at quasi-static and dynamic loading rates. The test specimens consisted of H-section beams and columns, extended end-plates, and high-strength bolts. In both the quasi-static and dynamic tests, the fracture modes were bolt failure in combination with plastic deformation of the end-plates. However, it was observed that the joints absorbed considerably more energy before failure in the dynamic tests than in the quasi-static tests, partly due to changes in the deformation modes. Also, the ductility of the joints seemed to increase for higher loading rates. These results suggest that the tested joints behave in a preferable manner under extreme impulsive loads.

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“…They proposed using three-dimensional models to develop analytical formulas for predicting the behavior and strength of connection components. Daryan et al (2011) [5], Sabuwala et al (2005) [6], and Al-Rifaie et al (2017) [7] employed FE software like ABAQUS and ANSYS to model connection behavior under blast loading. Their studies validated the models with experimental data and used them to evaluate critical zones in the connections.…”

Section: Introductionmentioning

confidence: 99%

Assessment of steel moment end plate connections under blast loading

Ebadi-Jamkhaneh

2024

Preprint

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This study investigates the performance of steel frame connections subjected to blast loading using finite element analysis. The yield line theory was employed to design the connection end plate, and nine different connection configurations were created by modifying the base model. These configurations explored variations in end plate thickness, bolt diameter, and the presence of stiffeners, and doubling plates. The performance of each connection was evaluated based on failure modes, energy absorption patterns, and maximum frame displacement. The results revealed a brittle failure mode in the base model with bolt shearing and end plate rupture. Increasing the end plate thickness prevented end plate failure but resulted in bolt yielding. Implementing stiffeners improved energy absorption but caused undesirable stress concentrations in the column. Doubling plates effectively enhanced energy absorption in both the beam and column while mitigating bolt failures. Models 7 and 9 exhibited distinct energy absorption patterns compared to other models.

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The behavior of top and seat bolted angle connections under blast loading

Cited by 16 publications

References 19 publications

Dynamic Response Parameter Analysis of Steel Frame Joints under Blast Loading

Dynamic Response Parameter Analysis of Steel Frame Joints under Blast Loading

An experimental study of static and dynamic behaviour of bolted end-plate joints of steel

Assessment of steel moment end plate connections under blast loading

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