6.2承台受剪承载力计算
剪跨比与以上冲垮比相同,故?y??oy?0.6,??因ho?715mm?800mm,取ho?800mm,?hs?1.0
1.751.75??1.093
??1.00.6?1.0?hp?ftb0h0?1.0?1.093?1100?2.3?0.715?1978.54kN?1.35?2Nmax?1485.32kN(满足)。
6.3承台受弯承载力计算
Mx??Niyi?2?477.9?1.35?0.65?838.71kN?mMx838.71?106As???4344.5mm2
0.9fyh00.9?300?715选用18?18,As?4578.12mm2,沿平行于y轴方向均匀布置。
My??Nixi?2?550.12?1.35?0.6?891.19kN?m 891.19?106 As???461.46mm2
0.9fyh00.9?30?0715选用16?20,As?5024mm2,沿平行x轴方向均匀布置。
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