An experimental study and calculation on the fire resistance of concrete-filled SHS and RHS columns

Evaluation of Fire Resistance of Unprotected Concrete-filled Rectangular Steel Tubular Columns under Axial Loading

“…Kodur [2] 와 Han 등 [3] 도 적 연구가 수행된 바 있다 [5], [6], [7], [8], [9], [10] . 이러한 무피복 CFT 기둥의 일반적 거동은 여러 연구자들 의 실험을 통해 일관되게 관찰된 것이다 [1], [3], [4], [5], [11] . [12] 의 합성기둥에 대한 산정절차를 참고하였 으며 아래의 식 (1)～(5)의 순으로 전개된다.…”

Concrete-Filled Double Skin Steel Tubular Columns Exposed to ASTM E-119 Fire Curve for 60 and 90 Minutes of Fire

“…Among them are; 1) higher fire resistance to fire even without fire protection layer on outer steel tube, 2) higher load bearing capacity, 3) prevent the spalling of concrete, 4) eliminate the need for formwork, 5) increase the strength, ductility and energy absorption and 6) reduced column footing [3][4][5][6][7][8][9]. However, the usage of CFDST columns is limited to outdoor construction such as transmission towers [7], and bridge piers [8][9][10] even though the performance of CFDST column is superior to RC and CFST columns. To date, research studies on CFDST columns exposed to fire are limited and can be found in previous research [9][10][11][12][13][14][15][16].…”

Experimental investigation on the fire behaviour of rectangular and elliptical slender concrete-filled tubular columns

“…Han and co-workers [17] tested a total of eight concrete-filled rectangular hollow section (RHS) columns, varying the steel tube depth-to-width ratio, column slenderness and load eccentricity. It was proved that the fire resistance of the columns can be enhanced through the use of fire-protection coat.…”