U型桥台计算书

时计算值容许值计算值容许值1偏心距验算e0(m)0.380.5250.270.5252基底应力σmax(KN/m²)131.61150187.33150基底应力σmin(KN/m²)63.68112.303抗滑稳定系数Ks1.801.31.841.34抗倾覆稳定系数K05.571.57.741.5U型桥台计算书一、计算资料(一)结构尺寸桥台总高H=7.200m基底标高H1=142.800m雉墙高度h0=1.031m最低水位H2=142.800m胸墙高度h1=5.169m洪水水位H3=148.700m基础厚度h2=1.000m河床标高H4=145.000m前墙高度h3=6.200m前墙背坡度m=3.000m反力位置b0=0.300m翼墙背坡度m=3.500m台帽宽度b1=0.600m桥台宽度W0=5.500m雉墙顶宽b2=0.500m翼墙顶宽W1=0.500m翼墙长度b3=2.600m内空顶宽W2=4.500m前襟边宽B1=0.500m侧襟边宽W3=0.500m前墙底宽B2=3.167m翼墙底宽W4=2.271m后踵宽度B3=0.533m内空底宽W5=0.957m基础长度B=4.200m(顺桥方向)基础宽度W=6.500m(横桥方向)假想台背与铅直面夹角α=0.00°(假想台背铅直)基础墙趾扩散角=tg-1(B1/h2)=26.57°<墙体最大刚性角=35.00°满足要求。台后填土与水平面夹角β=0.00°(二)墙后填土参数墙背填土容重γs=19.00KN/m³墙背填土浮容重γsw=9.00KN/m³计算内摩擦角Φ=35.00°填土与假想台背间摩擦角δ=17.50°(取δ=1/2×Φ)襟边填土容重γ1=18.00KN/m³(三)墙体与地基参数桥台砌体容重γk=23.00KN/m³桥台砌体浮容重γkw=13.00KN/m³基底摩擦系数μ=0.3地基容许承载力[σ]=150KPa