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A platform for research: civil engineering, architecture and urbanism
Research on Fire-Resistance Capacities of Steel Columns with Partial-Damaged Fire Protection Coating
https://orcid.org/http://orcid.org/0000-0003-0591-6248
https://orcid.org/http://orcid.org/0000-0002-6258-9864
The protection coating is possible to be damaged during its service life, which may induce a more complicated temperature distribution of columns in fire. In order to find out the fire-resistance capacities of the steel columns with partial-damaged fire protection coating, a detailed study on the effect of partial-damaged fire protection coating on steel columns was conducted with the finite element method. The fire-resistance capacity of I-section steel columns with partial-damaged fire protection coating was studied for the different cases, and the heating condition was the international standard fire curve. It is verified that the partial-damaged fire protection coating can cause local longitudinal non-uniform temperature distribution for the whole column and sectional temperature difference for a segment of the column at the same time. The parametric analysis including the locations of defects on protection coating, the slenderness of columns and the load ratios were considered. The results show that the relatively small areas losses of the protection coating can significantly reduce the fire-resistance capacity of the steel columns. The degradation in fire-resistance capacity is more significant when the losing areas on the upper part of the column, and the cases with high load ratio (≥0.7) are more sensitive to the negative effect of the losses of the protection coating. The residual fire-resistance capacity of the column decreases with the development of the defect length on the protection coating. The results can provide the basic assessments on fire-resistance capacities of steel columns with partial-damaged fire protection coating.
Research on Fire-Resistance Capacities of Steel Columns with Partial-Damaged Fire Protection Coating
https://orcid.org/http://orcid.org/0000-0003-0591-6248
https://orcid.org/http://orcid.org/0000-0002-6258-9864
The protection coating is possible to be damaged during its service life, which may induce a more complicated temperature distribution of columns in fire. In order to find out the fire-resistance capacities of the steel columns with partial-damaged fire protection coating, a detailed study on the effect of partial-damaged fire protection coating on steel columns was conducted with the finite element method. The fire-resistance capacity of I-section steel columns with partial-damaged fire protection coating was studied for the different cases, and the heating condition was the international standard fire curve. It is verified that the partial-damaged fire protection coating can cause local longitudinal non-uniform temperature distribution for the whole column and sectional temperature difference for a segment of the column at the same time. The parametric analysis including the locations of defects on protection coating, the slenderness of columns and the load ratios were considered. The results show that the relatively small areas losses of the protection coating can significantly reduce the fire-resistance capacity of the steel columns. The degradation in fire-resistance capacity is more significant when the losing areas on the upper part of the column, and the cases with high load ratio (≥0.7) are more sensitive to the negative effect of the losses of the protection coating. The residual fire-resistance capacity of the column decreases with the development of the defect length on the protection coating. The results can provide the basic assessments on fire-resistance capacities of steel columns with partial-damaged fire protection coating.
Research on Fire-Resistance Capacities of Steel Columns with Partial-Damaged Fire Protection Coating
https://orcid.org/http://orcid.org/0000-0003-0591-6248
https://orcid.org/http://orcid.org/0000-0002-6258-9864
The protection coating is possible to be damaged during its service life, which may induce a more complicated temperature distribution of columns in fire. In order to find out the fire-resistance capacities of the steel columns with partial-damaged fire protection coating, a detailed study on the effect of partial-damaged fire protection coating on steel columns was conducted with the finite element method. The fire-resistance capacity of I-section steel columns with partial-damaged fire protection coating was studied for the different cases, and the heating condition was the international standard fire curve. It is verified that the partial-damaged fire protection coating can cause local longitudinal non-uniform temperature distribution for the whole column and sectional temperature difference for a segment of the column at the same time. The parametric analysis including the locations of defects on protection coating, the slenderness of columns and the load ratios were considered. The results show that the relatively small areas losses of the protection coating can significantly reduce the fire-resistance capacity of the steel columns. The degradation in fire-resistance capacity is more significant when the losing areas on the upper part of the column, and the cases with high load ratio (≥0.7) are more sensitive to the negative effect of the losses of the protection coating. The residual fire-resistance capacity of the column decreases with the development of the defect length on the protection coating. The results can provide the basic assessments on fire-resistance capacities of steel columns with partial-damaged fire protection coating.
Research on Fire-Resistance Capacities of Steel Columns with Partial-Damaged Fire Protection Coating
KSCE J Civ Eng
Jin, Hui (author) / Chun, Qing (author)
KSCE Journal of Civil Engineering ; 24 ; 1893-1902
2020-06-01
10 pages
Article (Journal)
Electronic Resource
English
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