Water-flushing sinking-assisting system and construction technical method thereof

Abstract

The invention relates to a water-flushing sinking-assisting system. Two water jet pipes and an air pipe are preembedded in a pile body of a precast pile, water inlet ends of the two water jet pipes are connected to a quick joint and then connected to a double-table water pump, and a side wall of the pile body is provided with three outer drainage holes communicated with a pile core; a pile tip isa funnel shaped steel pile tip welded by a steel plate; and the two water jet pipes at the pile tip flush water directly along the pile axial line direction. The invention has the advantages that because the three outer drainage holes with the diameter of 70mm, reserved at the pile body, are communicated with the pile core, the effective length of an inner drainage slurry channel is reduced so asto drain away water and sand; because a water pipe and the air pipe are preembedded in concretes, the pipes are unnecessary to pull out, an internal thread bend elbow of 90 DEG is adopted at a water inlet end and an air inlet end so as to connect the quick joint; and because the quick joint is utilized, the assembly and disassembly are quick, the steps of assembling and disassembling the water pipe and the air pipe are effectively avoided, the operation is simple, the cost is lower, and the pile-sinking efficiency is improved.

Description

technical field [0001] The system of the present invention belongs to a new type of pile sinking process for pile foundations of high-pile wharfs, especially when the prestressed concrete square pile encounters a dense sand layer or a dense interlayer that is difficult to penetrate during the pile sinking process, the water flushing aid sinking system and construction technology used method. technical background [0002] The water flushing aided sinking process has been widely used in our country. Water flushing piles can be divided into outer flushing and outer rowing, inner flushing and outer rowing and inner flushing and inner rowing according to the flushing method. Solid piles can only use outer flushing and outer rowing, and hollow piles or tubular piles generally use inner flushing and outer rowing and inner flushing. Row inside. At present, most of the domestic methods of internal punching and internal rowing are to put water pipes and air pipes into the hollow cor...

AI Technical Summary

Problems solved by technology

Before piling, water pipes and air pipes need to be installed. The process is cumbersome and the process is complicated. Each piling needs to be installed and disassembled once. The cost is high and the efficiency is low. It is difficult to be used in projects with short construction period and large amount of work.

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