浅谈静压预应力管桩引孔施工

随着我国城市建设的发展,静压预应力管桩具有经济、高效、施工简单、低噪声、低污染等特点,其在工业、民用建筑基础中得以广泛应用。但静压法施工在其压桩过程中会产生比较明显的挤土效应,尤其对于难以穿透的土层时,静压沉桩很难满足设计要求,现阶段普遍采用引孔措施来解决这一问题,本文结合实际工程案例,重点阐述引孔措施在静压桩施工中的应用,并提出引孔施工的注意事项。

The Pilot Hole Construction of Static Pre-stressed Tubular Pile

With the development of urban construction in China, the static pre-stressed tubular pile has been widely used in industrial and civil construction on account of its many good qualities such as economical efficiency, high efficiency, simple construction, low noise and low pollution.But compacting effect is usually caused in the static piling process, and especially for impenetrable soil, the pile jacking-in method can't meet the design requirement.Therefore, the pilot hole is generally applied to solve this type of problem at the current stage.On the basis of practical engineering cases, this text mainly focuses on the application of pilot hole in the static pressure pile construction, and also points out the matters needing attention in pilot hole construction.