摘要
本文从钢纤维钢筋混凝土梁受压边缘极限应变及钢纤维混凝土受压应力应变关系出发,讨论了梁受压区形心系数和等效矩形应力系数与钢纤维含量特征参数的关系,给出了弯曲抗压强度和弯曲抗拉强度的计算公式。文中又定义了钢纤维钢筋混凝土梁的界限相对受压区高度,建议了最大和最小配筋率的计算方法,以此为基础建立钢纤维钢筋混凝土梁正截面强度计算模型,提出了与普通钢筋混凝土梁正截面强度计算相衔接的钢纤维钢筋混凝土梁正截面强度的计算方法和相应的计算公式。
From the ultimate strain of the compressive edge of steel fibre reinforced concrete beams and co-mpressive stress-strain relationship, this paper discusses the central factor of compressive region and equi-valent rectangular stress factor's relationship with steel fibre content feature parameter. The calculatingformula of flexural compressive strength and flexural tensile strength is given. The paper also defines theheight of limitary opposite compressive region, and proposes the calculating method of maximum andminimum steel ratio. Based on this, the calculating model of the positive section strength of steel fibrereinforced concrete beam is set up, and the calculating method and corresponding formulae of the posi-tive section strength of steel fibre reinforced corcrete beam is put forward, which is connected with gener-al reinforced concrete beam's positive section strength calculation.
出处
《工业建筑》
CSCD
北大核心
1991年第10期9-14,共6页
Industrial Construction
