Micro-pile construction method "SP Fix Pile Method"

Route pile construction method that achieves high speed, labor saving, and multi-stage hook effect.

The "SP Fix Pile" uses a hollow SP bolt as a center rod and employs a double-tube drilling method with a general-purpose drill pipe, which can also be applied as a micro-pile. Once drilling is completed, injection is performed through the SP bolt, and only the drill pipe is withdrawn, eliminating the need for rod retrieval or core material installation, thus enabling labor-saving and high-speed construction. Although it features a thick bolt structure with a diameter of 115mm or more, stable drilling and reliable shaping through pressurized injection can be achieved with a general-purpose anchor machine up to about 20m, making it effective as a long, thick bolt for countermeasures on slopes with extremely deep soft layers or embankment slopes. Additionally, when adopted as a compression-type pile foundation, placing a "mouth reinforcement pipe" at the head allows for the rational handling of horizontal forces and bending moments in addition to axial compressive forces. 【Features】 - It is a reinforcement soil method that does not introduce tension, eliminating the need for tension management. - Even if over-tension occurs due to seismic loads, there is no issue with tension adjustment. - The SP bolt is used as a center rod for double-tube drilling, leaving it in place, so core material insertion work is unnecessary. - It is a waiting-type reinforcement soil that does not require tensioning work. - The work process can be shortened, achieving high-speed construction. For more details, please contact us or download the catalog.

Renovation and repair methods