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例2 设有均布荷载作用下的T形载面梁,其承受的内力有;弯矩设计值M=54kN·m,剪力设计值V=42kN,扭矩设计值T=7.6kN·m。试设计此梁。 解:本题与例1相似,只是由矩形载面改为T形截面。 一、选定构件的截面尺寸和材料强度等级 (一)截面尺寸。初步假定T形截面的尺寸为:b=200mm,b′_f=400mm,h=450mm,h′_f=80mm o
Example 2 There is a T-shaped load-bearing surface beam under uniform load. The internal forces it bears are: bending moment design value M=54 kN·m, shear force design value V=42 kN, and torque design value T=7.6 kN·m. Try to design this beam. Solution: This question is similar to Example 1, except that the rectangular surface is changed to a T-shaped one. First, the selected member’s section size and material strength grade (A) the size of the cross-section. Assume initially that the size of the T-section is: b=200mm, b’_f=400mm, h=450mm, h’_f=80mm o