Numerical evaluation of the effects of fire on steel connections; Part 2: Model results

Rahnavard, Rohola; Thomas, Robert J.

doi:10.1016/j.csite.2018.11.012

Cited by 24 publications

(8 citation statements)

References 15 publications

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“…e parameters representing the joint's stiffness and strength showed similar characteristics in that the values for both parameters decrease with rising temperatures following the strength reduction factors of structural steel presented in the design codes. Further test by Rahnavard and omas [37] on various types of steel connection (bolted endplate, bolted cover plate, bolted tee, and welded cover plate) showed a change in the behaviour of the moment capacity as well as stiffness as the temperature increased from 20 to 300°C. e moment-rotation-temperature relationships for a concrete structure are influenced by the fire effects on the reinforced concrete structure, including deflection, cracking, spalling, loss of stiffness and strength, and loss of reinforcement strength.…”

Section: 2mentioning

confidence: 99%

“…Refs. [34][35][36][37] described the momentrotation-temperature relationships for beam-to-column connections. Most of the studies focused on steel structures.…”

Section: 2mentioning

confidence: 99%

“…Computer simulations and analytical models are used to validate experimental findings and improve engineering recommendations. Many studies have been conducted on steel beam-to-column connection to determine the moment-rotation-temperature relationships [34][35][36][37], as described in Section 2. Among the finite element simulation programs used to make the simulations are ABAQUS, VULCAN, ADAPTIC, DIANA, and ANSYS.…”

Section: Computer Simulations and Analytical Modelsmentioning

confidence: 99%

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A Review of Precast Concrete Beam‐to‐Column Connections Subjected to Severe Fire Conditions

Radzi

Hamid

Mutalib

et al. 2020

Advances in Civil Engineering

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Fire exposure can have a significant impact on the structural integrity and robustness of precast concrete beam-to-column connections. Given the importance of fire safety in the design of a structure, it is critical to understand the damage that may occur in the event of a fire to be able to prevent the building from collapsing. No comprehensive study has been carried out to determine the effects of fire on semirigid and pinned concrete beam-to-column connections. Most studies focused on the impact of exposure of rigid concrete beam-to-column connections to high temperatures. This paper is a comprehensive review of the literature on the performance of precast concrete beam-to-column connections under fire conditions. The key areas in this review are the moment-rotation-temperature characteristics and fire effect on precast concrete beam-to-column connections. This paper focuses primarily on the case studies of real fires, large-scale fire tests, computer simulations and analytical models, fire resistance tests on the connection elements, and assessment and rehabilitation of fire-damaged precast concrete. The paper also discusses the current issues and possible challenges.

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Section: 2mentioning

confidence: 99%

“…Refs. [34][35][36][37] described the momentrotation-temperature relationships for beam-to-column connections. Most of the studies focused on steel structures.…”

Section: 2mentioning

confidence: 99%

Section: Computer Simulations and Analytical Modelsmentioning

confidence: 99%

See 1 more Smart Citation

A Review of Precast Concrete Beam‐to‐Column Connections Subjected to Severe Fire Conditions

Radzi

Hamid

Mutalib

et al. 2020

Advances in Civil Engineering

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show abstract

“…Nowadays, the finite element method has become a powerful tool used worldwide in most fields of engineering. Many studies have been conducted on steel connections and steel structures using finite element software [36][37][38][39][40][47][48][49][50][51]. However, there are not enough studies in the literature about the haunch angle and the effectiveness of stiffening.…”

Section: Introductionmentioning

confidence: 99%

Effect of The Haunch Angle and Stiffener Types on Column-Beam Connection Behaviour Under Static Loading

Sadid¹

2022

CEBEL

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The strong column-weak beam principle, one of the earthquake resistant building design theories, require the connection area to be strong enough so that the plastic hinge forms in the beam. One of the proposed solutions is to strengthen the column-beam connection zone in steel connection with haunches. This study aims to look at parametrically behavior of column-beam haunched connections under the 100mm vertical displacement controlled loading using the finite element method. To obtain this, a total number of 21 finite elements model with 15, 30, and 45 degrees angles and 6 various stiffener types has been modeled by ABAQUS software. The research later discussed behavior of underlying components of haunch connections models such as the load-displacement curve, bearing capacity, extended end plate bending, stress distribution, and the position of the plastic hinge's development after finite element analysis. The study found that decrease in haunch angle improve the connection's bearing capacity, while in this case, the failure modes and plastic hinges will occur close to the joints which does not meet the code requirements. The article concludes that the 30-degree haunch angle is the most appropriate one in haunch connection and the three parallel and K-stiffeners is the most suitable reinforcement type for the haunched connections.

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“…An important issue related to the design of steel frame buildings is the behaviour of the structure at elevated temperatures. The study [7] analysed typical beam/column connections in fire conditions. A numerical model was developed, allowing for the evaluation of the contact load-carrying capacity at temperatures up to 900°C.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Load-Carrying Capacity of a Bolted Connection Between a Steel Floor Beam and a Column

Kasza¹,

Nawrot²

2021

Zeszyty Naukowe Politechniki Częstochowskiej. Budownictwo

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The paper analyses the load-carrying capacity of a bolted overlapping connection between a floor beam and a column. Three variants of the connection were considered: without the support seat and with support in the form of an angle bracket and a plate. The value of force acting on the connection was determined based on calculations made for the adopted conditions. The load-carrying capacity of bolts and plates for the assumed load was evaluated and the values of stress in the contact zone were compared for the analysed cases. It was demonstrated that the load-carrying capacity of bolted overlapping connections of the beam/column type depends on the adopted solution in terms of contact shape (presence or absence of a support seat), the type of support seat (if any) and the number, class and spacing of bolts. The results of the calculations showed that the most effective method of connection for the adopted assumptions is the connection with the support seat capital in the form of an angle bracket. The use of this type of beam support significantly reduces bolt tension and reduces the stresses occurring in the contact zone of the connected elements.

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Numerical evaluation of the effects of fire on steel connections; Part 2: Model results

Cited by 24 publications

References 15 publications

A Review of Precast Concrete Beam‐to‐Column Connections Subjected to Severe Fire Conditions

A Review of Precast Concrete Beam‐to‐Column Connections Subjected to Severe Fire Conditions

Effect of The Haunch Angle and Stiffener Types on Column-Beam Connection Behaviour Under Static Loading

Analysis of the Load-Carrying Capacity of a Bolted Connection Between a Steel Floor Beam and a Column

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