Pile sinking method for driving large-diameter steel pipe pile in intertidal zone

Abstract

The invention relates to a pile sinking method for driving a large-diameter steel pipe pile in an intertidal zone. The method is characterized in that: a ship special for large-diameter steel pipe pile transportation and auxiliary pile hoisting construction is matched with a full rotary hoisting ship to realize the large-diameter steel pipe pile sinking operation as the following steps of: machining the steel pipe pile and hoisting the steel pipe pile to the special ship; positioning the hoisting ship; arranging a tilt sensor at the top of the steel pipe pile; vertically hoisting the steel pipe pile; automatically sinking the vertical steel pipe pile into the mud; hoisting a steel wire rope to automatically throw off a hook; recording the vertical reading of the steel pipe pile; and hammering the sunken pile by using a hydraulic hammer. The method has the advantages that: the ship special for large-diameter steel pipe pile transportation and auxiliary pile hoisting construction is matched with the full rotary hoisting ship to realize the large-diameter steel pipe pile sinking operation, so that the steel pipe pile of 300 to 600 tons can be easily hoisted and turned over in the air, the requirement for the maximum hoisting weight of the hoisting ship is reduced, hoisting safety and convenience are ensured and the engineering cost is greatly saved.

Description

technical field [0001] The invention belongs to a pile foundation construction method on water, in particular to a pile sinking method for driving a large-diameter steel pipe pile in an intertidal zone. Background technique [0002] As a kind of renewable clean energy, wind energy resource has gradually been paid more and more attention to its development and utilization. The construction of wind farms has gradually developed from land to sea. The construction of offshore wind farms is an important direction for the development of new international energy. Developed countries such as Europe and the United States have already established A number of wind power stations have been built in the sea area, and capital investment in this area is still increasing. Because the foundation structure of large-diameter steel pipe piles laid at sea is light, materials are saved, construction is simple, construction period is short, quality is easy to control, and the degree of mechanized ...

AI Technical Summary

Problems solved by technology

The problems of the technology disclosed in the above patent application are: (1) the construction technology needs steel pipe piles to be hoisted to the beach surface, and then the construction personnel go down to the beach surface to untie and hang the steel wire rope, so the foundation bearing capacity of the seabed requires It is relatively high and must be able to withstand a certain load to ensure that the steel pipe piles and construction personnel do not sink too deep into the mud. Therefore, the construction scope has great limitations and is not suitable for places with muddy and weak seabeds. Work on the beach, so you have to wait for the tide to completely recede before you can work, so the work time is also very short, and construction safety is difficult to guarantee

(2) The verticality observation method of two theodolites intersecting at right angles to scan the pile edge is adopted, and the verticality deviation of the pile is estimated and read entirely by the experience of the observers. The measurement accuracy is not high, and it cannot meet the verticality requirements of large-diameter steel pipe piles.

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