Construction method for repeated pile-sinking of inner pile casing

Abstract

The invention discloses a construction method for repeated pile-sinking of an inner pile casing. The construction method includes the following steps that a dismantling drill bit and a dismantling drilling rig are lifted, and the drilling rig is lifted to a deck and tied firmly; a pile stabilizing platform is lowered, and then the pile stabilizing platform is re-leveled; an S2000 hydraulic pilinghammer is used for pile-sinking of the inner pile casing, the inner pile casing is continuously driven downwards, and the perpendicularity of the inner pile casing is measured and adjusted at any timein the construction process; and after the pile-sinking of the inner pile casing, the drilling rig is reinstalled and debugged for hole drilling. The construction method is reasonable and simple. First, the pile stabilizing platform is lowered, then the inner pile casing is subjected to repeated pile-sinking by the S2000 hydraulic piling hammer, and the perpendicularity of the inner pile casing is measured and adjusted at any time in the construction process, so that the inner pile casing is steadily subjected to pile-sinking and the depth of the inner pile casing into mud is ensured, and thestability is greatly improved.

Description

technical field [0001] The invention relates to the technical field of pile sinking with an inner casing, in particular to a construction method for redriving piles with an inner casing. Background technique [0002] Offshore piling is a large-scale offshore pile foundation construction operation, which plays a vital role in the expansion of ports, the stability of bridges, the development of offshore wind power resources, offshore mineral resources and oil and gas resources. [0003] It is used for the construction of bored piles. It is made of steel and is cylindrical. It is usually a steel casing. It is generally used as a construction prevention fixation. The connection of the casing requires no protrusions in the casing. [0004] At present, in the process of offshore piling, the existing construction methods have the situation that the inner casing cannot completely enter the mud, and the depth of the mud entry is insufficient, resulting in insufficient stability of th...

AI Technical Summary

Problems solved by technology

[0004] At present, in the process of offshore piling, the existing construction methods have the situation that the inner casing cannot completely enter the mud, and the depth of the mud entry is insufficient, resulting in insufficient stability of the inner casing, which affects the piling operation. Therefore, an improved method is urgently needed technology to solve this problem existing in the prior art