【摘 要】
：
某高速PA1标段桥基础均为钻孔灌注桩.桩基穿越地层依次为回填土、淤泥、中粗沙或砾石、全风化花岗岩、强风化花岗岩、弱风化花岗岩或弱风化绿岩.桩基以端承桩为主,部分地层采
【机 构】
：
武警水电第二总队第五支队,江苏常州,213031
论文部分内容阅读
某高速PA1标段桥基础均为钻孔灌注桩.桩基穿越地层依次为回填土、淤泥、中粗沙或砾石、全风化花岗岩、强风化花岗岩、弱风化花岗岩或弱风化绿岩.桩基以端承桩为主,部分地层采用摩擦桩,钻孔桩施工采用反循环钻机成孔.混凝土采用拌合站集中拌和,运输车运至现场后,导管法灌注水下砼.钢筋笼分节加工,吊机起吊,孔口接长机械连接法完成.结合工程施工的特点,着重介绍了施工方法、作业程序、质量控制、故障处理以及施工过程中的应注意的有关问题.
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