圆形构件按弦长布置直钢筋时,钢筋长度的计算,过去施工书籍中多推荐下列公式: 当配筋为单数间距时 当配筋为双数间距时式中l_i——第i根钢筋(从圆心向两边计数)所在 弦长 a——钢筋间距 n——钢筋根数n=(D/a)-1(D为圆直径) i——从圆心向两边计数序号数 When circular members are arranged by chord length, the length of the steel bars is calculated. In the past, the following formula was recommended in the construction books: When the reinforcement is a single-digit spacing, when the reinforcement is a double-number spacing, the type l_i—the i-th steel bar ( From the center of the circle to both sides) where the length of the chord a - reinforcement spacing n - the number of rebar n = (D / a) -1 (D is the diameter of the circle) i - counted from the center of the circle to the sides