重力式导向防斜钻具在钻孔灌注桩施工中的应用及探讨

Application and Discussion of Gravity Guide Incline-prevention Drilling Tool in Bored Grouting Pile Construction

摘要:

介绍了一种高垂直度要求钻孔灌注桩施工的防斜钻具——重力式导向防斜钻具的设计、加工，及其在福州至银川高速公路九江长江公路大桥桥基工程中的使用效果，从理论上分析了该钻具的防斜原理。

Abstract:

The paper introduced an incline-prevention drilling tool for bored grouting pile construction with high verticality requirement, and introduced this gravity guide incline-prevention drilling tool about its design, processing and the application effect in bridge foundation engineering of Changjiang highway bridge in Jiujiang. Theoretical analysis was made on the principle of incline-prevention.