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钢纤混凝土强度标准值与设计值的确定
一、钢纤维混凝土轴心抗压强度和弯曲抗压强度的标准值与设计值，可根据钢纤维混凝土强度等级(或标号)按现行有关的混凝土结构设计规范的规定采用。
2. The standard and design values of the tensile strength of the steel fiber reinforced bar can be determined according to the following formulas:
fftk=ftk(I+a1入f) (2 .2.3一1)
F FTK = FTK (I + A1 into f) (2.2.3-1)
fft=ft (1+ at入f) (2 .2，3一2)
F ft = ft (1 + at into f) (2.2, 3-2)
入f= Pflf/df (2 .2.3一3)
Enter f = Pflf/df (2.2.3-3)
式中fftk,钢纤维混凝土抗拉强度标准值、设计值；
In the formula fftk, the standard value and design value of the tensile strength of steel fiber reinforced concrete;
ftkft--根据钢纤维混凝土强度等级（或标号）按现行业有关混凝土结构设计规范确定的抗拉强度标准、设计值；
Ftkft - Tensile strength standard and design value determined according to the strength grade (or label) of steel fiber reinforced concrete according to current relevant concrete structural design codes;
入f--钢纤维含量特征参数;
Characteristic parameters of steel fiber content;
pf--钢纤维体积率;
Pf - steel fiber volume ratio;
lf--钢纤维长度;
LF - steel fiber length;
df--钢纤维直径(或等效直径);
DF - steel fiber diameter (or equivalent diameter);
at钢纤维对抗拉强度的影响系数，宜通过试验确定，当钢纤维混凝土强度等级为CF20一CF40时
The influence coefficient of at steel fiber on tensile strength should be determined by test when the strength grade of steel fiber reinforced concrete is CF20-CF40.
1. The standard and design values of the axial compressive strength and flexural compressive strength shiyany.89ix.comdiandongmen.89ix.comtongmen.89ix.comqingxijii.89ix.comgangmumen.89ix.com
erliu.89ix.comof steel fiber reinforced concrete can be adopted according to the strength grade (or label) of steel fiber reinforced concrete according to the current relevant specifications for the design of concrete structures.
二、钢纤维棍凝土抗拉强度的标准值和设计值可分别按下列公式确定:2. The standard and design values of the tensile strength of the steel fiber reinforced bar can be determined according to the following formulas:
fftk=ftk(I+a1入f) (2 .2.3一1)
F FTK = FTK (I + A1 into f) (2.2.3-1)
fft=ft (1+ at入f) (2 .2，3一2)
F ft = ft (1 + at into f) (2.2, 3-2)
入f= Pflf/df (2 .2.3一3)
Enter f = Pflf/df (2.2.3-3)
式中fftk,钢纤维混凝土抗拉强度标准值、设计值；
In the formula fftk, the standard value and design value of the tensile strength of steel fiber reinforced concrete;
ftkft--根据钢纤维混凝土强度等级（或标号）按现行业有关混凝土结构设计规范确定的抗拉强度标准、设计值；
Ftkft - Tensile strength standard and design value determined according to the strength grade (or label) of steel fiber reinforced concrete according to current relevant concrete structural design codes;
入f--钢纤维含量特征参数;
Characteristic parameters of steel fiber content;
pf--钢纤维体积率;
Pf - steel fiber volume ratio;
lf--钢纤维长度;
LF - steel fiber length;
df--钢纤维直径(或等效直径);
DF - steel fiber diameter (or equivalent diameter);
at钢纤维对抗拉强度的影响系数，宜通过试验确定，当钢纤维混凝土强度等级为CF20一CF40时
The influence coefficient of at steel fiber on tensile strength should be determined by test when the strength grade of steel fiber reinforced concrete is CF20-CF40.
