Abrégé

The purpose of the invention is to provide a pile construction method that can reliably improve pile bearing capacity. Provided is a pile construction method comprising a step of driving a pile by applying vibration with a vibratory hammer while injecting a high-pressure fluid into the ground, wherein one or more high-pressure fluid delivery devices and a manifold device having a cylindrical inner space are disposed, the one or more high-pressure fluid delivery devices are respectively connected to one or more injection holes in the manifold device, and a plurality of discharge holes in the manifold device are respectively connected to a plurality of jet pipe members. With the inner space of the manifold device filled with the high-pressure fluid, the high-pressure fluid is discharged from each of the plurality of discharge holes and, in terms of the discharge rates of the high-pressure fluid discharged from each of the plurality of discharge holes, the difference between the maximum discharge rate and the minimum discharge rate is no more than 5% of the maximum discharge rate.

Classes IPC  ?

• E02D 7/26 - Mise en place par l'utilisation simultanée de plusieurs procédés
• E02D 5/04 - Éléments préfabriqués en acier
• E02D 5/28 - Pieux préfabriqués en acier
• E02D 7/18 - Mise en place par vibration
• E02D 7/24 - Mise en place par utilisation de jets de fluides

Abrégé

This steel-pipe pile is equipped with: a pile body configured from steel pipe; a dividing member for dividing the cross-sectional surfaces of the pile body into a plurality of surfaces, and attached to the inside of the tip end of the pile body; a spray nozzle for selectively spraying water and a fluid solidification material, and mounted to the outer-circumferential surface of the tip end of the pile body and/or the inner-circumferential surface of the tip end of the pile body; and a pipe for selectively supplying the water and the fluid solidification material to the spray nozzle.

Classes IPC  ?

• E02D 5/32 - Pieux préfabriqués avec dispositions pour le fonçage par des jets de fluides
• E02D 5/28 - Pieux préfabriqués en acier
• E02D 5/30 - Pieux préfabriqués en béton ou béton armé ou en acier et béton
• E02D 5/44 - Pieux en béton ou analogue coulés en place par utilisation de tubages ou autres coffrages ayant une base élargie ou des élargissements au bas du pieu
• E02D 7/24 - Mise en place par utilisation de jets de fluides

Abrégé

Disclosed is a steel pile driving method for driving a steel pile into the ground using a vibratory hammer and a transfer pipe that is disposed along the lengthwise direction of the aforementioned steel pile, wherein the steel pile driving method involves a step for inserting the aforementioned steel pile to a prescribed depth in the aforementioned ground by spraying water from the aforementioned transfer pipe while operating the aforementioned vibratory hammer, a step for forming a base protecting section around the end of the aforementioned steel pile by spraying a solidifying fluid material from the aforementioned transfer pipe while operating the aforementioned vibratory hammer, and a step for degassing the aforementioned solidifying fluid material by operating the aforementioned vibratory hammer for a fixed period of time after the aforementioned steel pile has been positioned at an anchoring depth and the spray of the aforementioned solidifying fluid material has been halted.

Classes IPC  ?

• E02D 7/18 - Mise en place par vibration
• E02D 5/30 - Pieux préfabriqués en béton ou béton armé ou en acier et béton
• E02D 5/32 - Pieux préfabriqués avec dispositions pour le fonçage par des jets de fluides
• E02D 5/44 - Pieux en béton ou analogue coulés en place par utilisation de tubages ou autres coffrages ayant une base élargie ou des élargissements au bas du pieu
• E02D 7/24 - Mise en place par utilisation de jets de fluides