Pile Hole Ring Cutting System and Pile Hole Ring Cutting Method

Abstract

The invention relates to a pile hole annular cutting system and a pile hole annular cutting method, in particular to the pile hole annular cutting system and the pile hole annular cutting method used for plugging and punching of a pile hole of a steel pipe pile in a bare rock area on the sea. The pile hole annular cutting system comprises a hanging drill device, an annular cutting driving device and an annular cutting drill, wherein the annular cutting drill is arranged at the lower end of the annular cutting driving device. According to the pile hole annular cutting system and the pile hole annular cutting method, the design of the annular cutting drill is adopted, annular cutting type drilling is conducted to bare rocks on the seabed through a sawtooth-shaped drill bit of the annular cutting drill, the earth surface and bed rocks of the seabed are enabled to loosen, break and crack through the drill bit of the annular cutting drill, drilling resistance is reduced, and drilling speed is greatly accelerated. The pile hole is firstly punched by the annular cutting drill, then the steel pipe pile is plugged into the pile hole, damage to the steel pipe pile due to the fact that the steel pipe pile is forcibly vibrated into a pile in the prior construction can be avoided, construction quality and construction safety are improved, and the problem that sinking placement of the steel pipe pile cannot be achieved in a weakly (slightly) weathered bare rock area on the sea can be solved.

Description

technical field [0001] The invention relates to a pile hole ring cutting system and a pile hole ring cutting method, in particular to a pile hole ring cutting system and a pile hole ring cutting method for inserting and driving steel pipe pile holes in offshore bare rock areas. Background technique [0002] At present, in the construction of offshore bridges, in order to create a convenient working space for the construction of the main bridge, to change the offshore construction to land construction, and to create a good transportation condition for engineering materials and mechanical equipment, it is necessary to build steel trestles along the line. Steel trestle bridges use steel pipes as foundation piles for bridge support. Due to the varying depths of the silt covering layer on the seabed, steel pipe piles are inserted into the deep covering layer. Due to the soft surface structure of the seabed, general vibratory hammers can be used. Insert to the design level. Howev...

AI Technical Summary

Problems solved by technology

However, for shallow overburden and bare rock areas, since there are a large number of exposed rocks on the seabed surface, their hardness is quite high, so it is extremely difficult to insert and drive steel pipe piles here, and the construction progress is very slow. The vibratory hammer directly forcibly vibrates the pile to sink the steel pipe pile, which will easily cause great damage such as cracking and bending, which will lead to potential safety hazards of the bridge; Using the existing ordinary vibratory hammer insertion method can no longer meet the requirements

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