Analysis of Structural Members under Elevated Temperature Conditions

Poh, K. W.; Bennetts, Ian

doi:10.1061/(asce)0733-9445(1995)121:4(664)

Cited by 29 publications

(17 citation statements)

References 4 publications

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“…Xu xiaoling [2] had studied on the failure probability and response time when a steel component was cooled by spray water. Gardner and Bailey C.G et al [3][4][5][7][8][9][10][11][12][13][14][15][16] had analyzed the deformation and reaction force for structural steel in local fire, the plastic deformation could not be restored during heating up, the internal forces will be redistributed between all components after it yielded, the residual stress was much larger. But the above researches did not discuss on the mechanics and deformation during rapid cooling by spray water.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Heating-up and Rapid Cooling on an Axially Restrained Steel Column in Fire

Xia¹,

Xu²

2017

Proceedings of the 2016 International Conference on Architectural Engineering and Civil Engineering

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Abstract-Heating-up and rapid cooling by spray water had a large impact on the mechanics and deformation behavior for an axially restrained steel column. During heating, the axial force of the restrained steel columns increased in linearly. During rapid cooling, its axial force rapidly decreased until zero, and then it increased until the peak, and the max axial force was about 16% larger than that produced at heating, and its max bending moment was about 20% lager than that produced at heating. Axially restrained stiffness had a negative affection for its bearing capacity. When the axial stiffness ratio was less than 0.05, the buckling and failure temperature was relatively close, but when it was more than 0.05, there was a significant difference between them. Rotationally restrained stiffness played a beneficial role in its stable bearing capacity in fire. When its rotational stiffness ratio was less than 0.4, the rotational restrained stiffness had a large beneficial effect on its stability, but when the rotational stiffness ratio was more than 0.4, this beneficial effect was relatively small.

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Section: Introductionmentioning

confidence: 99%

The Influence of Heating-up and Rapid Cooling on an Axially Restrained Steel Column in Fire

Xia¹,

Xu²

2017

Proceedings of the 2016 International Conference on Architectural Engineering and Civil Engineering

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“…This numerical method combines the nonlinear incremental finite element method used for RC column cross-sections subjected to forces and high temperature [10], the fire resistance analysis method used for RC columns [2,5,6], and the conjugate beam method [9]. The finite element approach used in this paper is similar in concept to an earlier approach [11], but differs with respect to the solution procedure. The solution procedure used by Poh and Bennetts [11] comprises two iterative loops: cross-section analysis and member analysis.…”

Section: Introductionmentioning

confidence: 99%

Fire resistance of reinforced concrete columns with L-, T-, and +-shaped cross-sections

2009

Fire Safety Journal

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“…Mechanical changes such as deformations of the member or partial failure of concrete during heating, such as cracking, can change the temperature boundary condition, which may affect the temperature distribution at the section. However, the effect of mechanical changes is not remarkable and therefore, it is assumed that the temperature distribution is not affected by the mechanical changes of the member in real applications [1][2][3][4]. Thus, analysis for the fire response of structures can be subdivided into two major sequences for the reasons mentioned above; a nonlinear temperature analysis and a successive structural analysis, as briefly shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

“…The motive is Poh's action-deformation concept and Lie's member solution method. Poh et al [3] suggested an analytical formulation by their actiondeformation relationships and solution procedure. The solution is achieved by action and deformations with an iterative procedure.…”

Section: Introductionmentioning

confidence: 99%

Analytical method for the behaviour of a reinforced concrete flexural member at elevated temperatures

Kang

Hong

2004

Fire and Materials

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SUMMARYAn analytical method is proposed for the thermal behaviour of a reinforced concrete flexural member subjected to fire. The analysis procedure can be subdivided into two different steps; sectional analysis and member solution. A segmentation scheme is employed in the analysis for a section. It implicates uniform sectional properties and temperature distribution through the longitudinal axis of the member. The mechanical changes at the segmented section such as strain changes and corresponding stresses due to temperature increase are integrated into the member behaviour at the member solution step. According to the analysis results, there exist very severe nonlinear strain changes with the depth measured from the fireexposed surface, which are caused by a nonlinear temperature distribution at the section. Self-equilibrating stresses are manifested during heating just to let the section remain plane after deformation.

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Analysis of Structural Members under Elevated Temperature Conditions

Cited by 29 publications

References 4 publications

The Influence of Heating-up and Rapid Cooling on an Axially Restrained Steel Column in Fire

The Influence of Heating-up and Rapid Cooling on an Axially Restrained Steel Column in Fire

Fire resistance of reinforced concrete columns with L-, T-, and +-shaped cross-sections

Analytical method for the behaviour of a reinforced concrete flexural member at elevated temperatures

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