XLS《C-1-1型》

, ,,

,,

,,

,"基层顶面当面回弹模量Et","=","a*hxb*E0*(Ex/E0)1/3",,

, ,,

"=","154.821808032875",,

, ,,

,,

,,

,"普通砼面层的相对刚度半径r","=","0.537*h*(Ec/Et)(1/3)",,

, ,,

"=","0.753983856040338",,

, ,,

,,

,,

"二","荷载疲劳应力计算",,

,,

, ,"荷载应力σps","=","0.077*r0.6*h-2",,

, ,,

"=","1.12845818251692",,

, ,,

,,

,,

,"疲劳应力系数kf","=","Nev",,

, ,,

"=","2.38802261693727",,

, ,,

,,

,,

,"荷载疲劳应力σpr","=","kr*kf*kc*σps",,

, ,,

"=","2.9103663550878",,

, ,,

,,

,,

"三","温度疲劳应力计算",,

,,

, ,"温度翘曲应力σtm","=","αc*Ec*h*Tg*Bx/2",,

, ,,

"=","2.190336",,

, ,,

,,

,,

,"温度疲劳应力系数kt","=","(fr/σtm)*(a*(σtm/fr)c-b)",,

, ,,

"=","0.511789739973686",,

, ,,

,,

,,

,"温度疲劳应力σtr","=","kt*σtm",,

, ,,

"=","1.120991491895",,

, ,,

,,

,,

"四","极限状态计算",,

,,

, ,"Rr*(σpr+σtr)","=","4.55543436709056",,

, "结论","综合疲劳应力小于面层砼弯拉标准强度值,能够满足使用要求",,

,,

, ,,

,,

,,

,,