The influence of connection stiffness on the behaviour of steel beams in fire

El-Rimawi, Jamal; Burgess, Ian; Plank, R.J.

doi:10.1016/s0143-974x(97)00047-3

Cited by 30 publications

(23 citation statements)

References 3 publications

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“…2 shows different forms of curve-fitting representations of joint's behaviour. Initial attempts to model the elevated temperature moment-rotation characteristics by mathematical expression were made by El-Rimawi et al [23]. They proposed a simple equation with three parameters, to represent the moment-rotation-temperature data obtained from experimental fire tests, using the modified Ramberg-Osgood expression [24] of the following form:…”

Section: Mathematical Representation Of Joint's Characteristicsmentioning

confidence: 99%

Performance of beam-to-column joints in fire—A review

Al‐Jabri

Davison

Burgess

2008

Fire Safety Journal

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Section: Mathematical Representation Of Joint's Characteristicsmentioning

confidence: 99%

Performance of beam-to-column joints in fire—A review

Al‐Jabri

Davison

Burgess

2008

Fire Safety Journal

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“…At the present time, there is very little experimental data for joint characteristics at elevated temperatures although data for the in-plane rotational characteristics of steel beam-to-column connection at ambient temperature abound. Thus, only El-Ramawi's model [23] using Ramberg-Osgood expression to establish the relationship between the connection bending moment …”

Section: -D Steel Beam Formulationmentioning

confidence: 99%

“…Different end restraints are considered, viz. 25%, 50%, 75% and 100% scaling of both the stiffness and strength of the extended end-plate characteristics as proposed by El-Ramawi et al [30]. Temperature is uniformly distributed along the beam length as well as across the section.…”

Section: Response Of Semi-rigid Connected Beams In Firementioning

confidence: 99%

Fe Simulation of Space Steel Frames in Fire With Warping Effect

Huang¹,

Tan²

2007

Volume 3 Number 3

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Most structural fire resistance analyses are confined to 2-D frames. To gain a more in-depth understanding of the response of a steel frame at elevated temperatures, 3-D simulations are necessary. This paper outlines the formulation of a two-noded 3-D beam-column to study the response of a steel frame in fire. The program is capable of small-strain large deformation analysis. Warping effect, a significant phenomenon in thin-walled members, is considered in the formulation. Degradation of steel mechanical properties at elevated temperatures is also considered, while thermal gradient is considered by slicing a cross-section into discrete segments. Creep can be either implicitly or explicitly taken into account. Several widely-used beam-to-column connections are approximated as zero-length semi-rigid springs. Their nonlinear moment-rotation relationships at elevated temperature are incorporated into the program. Unloading of both material stress-strain curve and moment-rotation characteristics of a connection are accounted for. The Newton-Raphson method is employed for nonlinear solving procedure. At the latter part of this paper, the program is verified against benchmark tests. All of them demonstrate the accuracy and reliability of the program.

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“…In absence of fire protection, steel structure building was extremely vulnerable to be damaged or even collapsed in fire. To effectively prevent steel structure from damage, the major method was local spray water cooling or protective coating [1][2][5][6][7][8][9][10][11][12]. When rapidly cooled by local spray water, A large thermal stress would produced because of large temperature difference and stress concentration would happened in the region of structural break, that would produced a strong impact on the stability for the structure.…”

Section: Introductionmentioning

confidence: 99%

Mechanical response of local rapid cooling by spray water on constrained steel frame structure at high temperature in fire

Xia

2015

MATEC Web of Conferences

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Abstract. Locally rapid cooling of spray water had strong impact on high temperature steel structure. When temperature of beam reached 600 and cooling rate was more than 20 /s, the maximum axial tension could reach more than 5 times of the originally compressive force. The compressive bending moment at joint of beam-to-column changed to tensile bending moment, and the maximum bending moment could reach above 4 times as that when heated. After rapid cooling by spray water, deflection at mid-span increased slightly.

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The influence of connection stiffness on the behaviour of steel beams in fire

Cited by 30 publications

References 3 publications

Performance of beam-to-column joints in fire—A review

Performance of beam-to-column joints in fire—A review

Fe Simulation of Space Steel Frames in Fire With Warping Effect

Mechanical response of local rapid cooling by spray water on constrained steel frame structure at high temperature in fire

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