工字钢型号图算法建筑力学中计算受压工字钢型号时，往往假设折减系数…进行试算，在此介绍一种免去试算的简捷方法。已知公式式中Ａ—工字钢截面积；Ｐ—轴向压力；［σ］─容许应力；λ—长细比；ｌ—杆长；ｉ—截面的最小惯性半径。当计算单件轧制工字钢时，ｉ依变于Ａ... I-beam model diagram algorithm In building mechanics, when calculating the type of pressed I-beam, the reduction factor is often assumed to be a trial calculation. Here, a simple method to eliminate the trial calculation is introduced. The formula is known in A - I-beam cross-sectional area; P-axial pressure; [σ] - allowable stress; λ - slenderness ratio; l - rod length; i - minimum inertia radius of the cross section. When calculating a single piece of rolling I-beam, i changes to A...