| 摘要 |
FIELD: construction.SUBSTANCE: brick columns with ferroconcrete holder are tested without destruction by a complex of single parameters of quality, estimating the value of the actual degree of fire resistance by the loss of bearing capacity. For this purpose the geometrical sizes of brick columns and ferroconcrete holder, condition of heating of columns, the buckling coefficient, classes of concrete and reinforcing steel, their compression resistance, parameters of thermal diffusion of materials of concrete of the holder and the brickwork; the value of standard load during fire resistance test, degree of tension of hazardous sections of ferroconcrete holder and the brickwork. The degree of fire resistance of brick columns with ferroconcrete holder is determined by polyparametrical relations describing the process of resistance of stone structure to fire effect.EFFECT: decrease of labour input, and also improvement of safety and reliability of determination.9 cl, 2 ex, 1 tbl, 2 dwg |
