Experimental investigation on flush end-plate bolted composite connection in fire

Li, Jiao-Ting; Li, Guoqiang; Lou, Guobiao; Chen, Lingzhu

doi:10.1016/j.jcsr.2012.03.022

Cited by 18 publications

(4 citation statements)

References 5 publications

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“…During fires, heat causes beam-column connections to soften, resulting in a loss of strength and rigidity, which causes a reduction in the load-carrying capacity of the related element. Many studies have been conducted to evaluate the behavior of different connection details under the effect of heat [1][2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Post-Fire Behavior of Different End-Plated Beam–Column Connections

Akduman,

Karalar,

Mert

et al. 2024

Buildings

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Heat affects the mechanical properties of steel and the bearing capacity of steel structures, with joints being a crucial factor in determining their behavior. Steel can regain its mechanical properties that are lost owing to heat if the temperature remains below 600 °C, allowing for the possibility of reusing steel after cooling. In such cases, it becomes essential to assess the damage caused by heat exposure to decide whether to demolish the structure or continue using it. However, continuing its usage requires anticipating the potential negative effects of heat. To achieve this, it is necessary to determine the behavior of steel joining tools experimentally or numerically after exposure to heat. This study aims to ascertain the post-fire behavior of various end-plated beam and column connections, providing a cost-effective alternative to expensive fire experiments. Three different end-plated combination models were heated to a specified temperature, and steel frames were constructed after the elements cooled. Six three-point bending tests were conducted, and the experimental data obtained were validated using finite element models. The results indicate that the temperature causes a reduction in the bearing capacity of the joint, and the length of the end plate has a significant effect on the connection behavior. The finite element model validated by experiments is expected to facilitate numerical studies with different characteristics.

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Section: Introductionmentioning

confidence: 99%

Investigation of the Post-Fire Behavior of Different End-Plated Beam–Column Connections

Akduman,

Karalar,

Mert

et al. 2024

Buildings

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“…Wellman et al [12] investigated experimentally the structural behaviour of thin composite floor systems with two different connection types (welded-bolted fin-plate and all-bolted double-angle cleats) subject to combined gravity loads and fire loading. Li et al [13] conducted three tests on flush end-plate composite joints at elevated temperatures and found that the rotational stiffness and moment capacity of composite joints are affected by the axial force from the restrained composite beam to which they are attached. They also proposed a simplified method to calculate the non-linear characteristics of composite connections in the analysis of beam catenary action at high temperatures, which was validated against their experimental results.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional modelling of composite frames with ductile connections in fire

2022

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“…AI-Jabri (1999) conducted a series of high-temperature tests on flexible end-plate composite connections and proposed a component-based model to predict the response of the composite end-plate connections. Li et al (2012) carried out three tests on flush end-plate composite joints. Based on the experimental results, they proposed a simplified method to calculate the non-linear characteristics of composite connection in the analysis of beam catenary action at elevated temperatures.…”

Section: Introductionmentioning

confidence: 99%

Ductile connection to improve the fire performance of bare-steel and composite frames

Liu

Huang

Burgess

2021

JSFE

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PurposeIn order to improve the robustness of bare-steel and composite structures in fire, a novel axially and rotationally ductile connection has been proposed in this paper.Design/methodology/approachThe component-based models of the bare-steel ductile connection and composite ductile connection have been proposed and incorporated into the software Vulcan to facilitate global frame analysis for performance-based structural fire engineering design. These component-based models are validated against detailed Abaqus FE models and experiments. A series of 2-D bare-steel frame models and 3-D composite frame models with ductile connections, idealised rigid and pinned connections, have been created using Vulcan to compare the fire performance of ductile connection with other connection types in bare-steel and composite structures.FindingsThe comparison results show that the proposed ductile connection can provide excellent ductility to accommodate the axial deformation of connected beam under fire conditions, thus reducing the axial forces generated in the connection and potentially preventing the premature brittle failure of the connection.Originality/valueCompared with conventional connection types, the proposed ductile connection exhibits considerable deformability, and can potentially enhance the robustness of structures in fire.

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Experimental investigation on flush end-plate bolted composite connection in fire

Cited by 18 publications

References 5 publications

Investigation of the Post-Fire Behavior of Different End-Plated Beam–Column Connections

Investigation of the Post-Fire Behavior of Different End-Plated Beam–Column Connections

Three-dimensional modelling of composite frames with ductile connections in fire

Ductile connection to improve the fire performance of bare-steel and composite frames

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