轴心受拉构件的受力分析 5.泥凝土开裂荷载 8=8 to A ot f ofr c1+ N. =EAC e A tO E Et ECA(1+dep)ero二、轴心受拉构件的受力分析 5. 混凝土开裂荷载 Nt t=ft As s 0 0 (1 ) (1 ) c E t t s c s t cr c E A A A E E N E A     = + = + t t o t0 f t t=Ect t0  = 