철근콘크리트 휨강도

철근콘크리트 휨강도

Mn=As fy (d - a/2)
As = p b d
As fy = 0.85 fck a b
a= (pbd fy)/(0.85 fck b)

Mn = p bd fy[d - 1/2*  (p fy d)/(0.85 fck)]
= bd^2 p fy [1 - (p fy)/(1.7 fck)]

https://youtu.be/wh_8YjgYVL0