{"text_format":"3","workbook":"xls","n_sheets":1,"sheets":["工字钢"],"not_rendered":{"images":1,"external_links":1},"read":"whole","date_system":"1900","formulas":"cached_only"}

{"sheet":"工字钢","index":0,"n_rows":17,"n_cols":4,"rows_kept":17,"merged":[[0,0,1,1],[8,0,9,1],[10,0,10,2],[11,0,11,2],[12,0,12,2],[13,0,13,2]],"flags":["formulas_cached_only"]}
["数据输入"]
[]
["上翼缘宽度b1 (mm)",250,"上翼缘厚度t1 (mm)",16]
["腹板高度hw (mm)",600,"腹板厚度tw (mm)",12]
["下翼缘宽度b2 (mm)",250,"下翼缘厚度t2 (mm)",16]
["计算长度l0x (mm)",7500,"计算长度l0y (mm)",7500]
["注：本工字钢截面沿y轴对称"]
[]
["数据输出"]
[]
["截面面积A=b1t1+hwtw+b2t2 (mm2)",null,null,{"v":15200,"d":"1.52E+04"}]
["截面形心至下翼缘下边的距离y=[b1t1(t1/2+hw+t2)+hwtw(hw/2+t2)+b2t22/2]/A (mm)",null,null,316]
["截面惯性矩Ix=(b1t13+twhw3+b2t23)/12+b1t1(t1/2+hw+t2-y)2+hwtw(hw/2+t2-y)2+b2t2(y-t2/2)2 (mm4)",null,null,{"v":975082666.6666666,"d":"9.75E+08"}]
["截面惯性矩Iy=(t1b13+hwtw3+t2b23)/12 (mm4)",null,null,{"v":41753066.666666664,"d":"4.2E+07"}]
["截面回转半径ix=(Ix/A)1/2 (mm)",{"v":253.27884917338932,"d":"253.28"},"截面回转半径iy=(Iy/A)1/2 (mm)",{"v":52.410993891565866,"d":"52.41"}]
["构件长细比λx=l0x/ix ",{"v":29.611631703465534,"d":"29.6"},"构件长细比λy=l0y/iy ",{"v":143.09974765059593,"d":"143.1"}]
["构件容许长细比[λ]",150,"刚度验算 Max[λx,λy]<[λ]","满足"]