钻孔灌注桩反循环工艺在渭河三号桥中的应用

分析了钻孔灌注桩反循环工艺的原理，探讨了钻孔桩反循环成孔工艺的优点，通过具体工程实例，进一步说明了钻孔桩反循环成孔工艺的采用能大大提高桩基础的成孔和灌注速度，节约混凝土用量，保证成桩质量。

On the application of the cast-in-place bored piles' reverse circular technique in No.3 Bridge of Wei river

The paper analyzes the principle of the cast-in-place bored piles' reverse circular technique,explores advantages of the cast-in-place bored piles' reverse circular technique,combine with the engineering practice,further illustrates the adoption of the technique can greatly improve the pore-forming and piling speed,save concrete and ensure piling quality.