介绍: 本合同段桥墩采用群桩基础,一个承台下设4根直径为1.6m钻孔灌注桩,均为摩擦桩,桩长51.0~59.0m,桩底持力层为弱风化安山岩和弱风化角砾岩。承台采用四边形圆倒角承台,顶标高全部为0.30,承台厚3.0m,平面尺寸为6.9m×6.9m;桥墩身均采用花瓶墩,墩高6.778m,;横桥向墩顶6.1m范围内呈曲线变化,纵桥向墩身厚度在墩顶约6.1m范围内由2.4m直线渐变至3.6m和4.0m。