Pile sinking device and method for middle digging pulling-anchoring method pre-stressed centrifugal pipe pile (square pile)

Abstract

The invention discloses a pile sinking device for a middle digging pulling-anchoring method pre-stressed centrifugal pipe pile (square pile). The pile sinking device comprises a main machine, a windlass, a power head, an oil pressure pulling-anchoring device, a press-in oil tank, a soil sampling tank, a pulley and a steel wire rope, wherein the windlass is arranged on the main machine; the power head, a recovering tank and the oil pressure pulling-anchoring device are arranged on the main machine; the lower side of the power head is connected with a soil sampling drilling rod; and the soil sampling drilling rod passes through the oil pressure pulling-anchoring device, the soil sampling tank, a pile cap and the centrifugal pipe pile (square pile) to the bottom of the device. The invention further provides a pile sinking method for the middle digging pulling-anchoring method pre-stressed centrifugal pipe pile (square pile). The method comprises the following steps of: driving the soil sampling drilling rod to realize soil digging through the power head; realizing retraction of the press-in oil cylinder under the action of the road holding of the soil sampling drilling rod; and realizing pile pressing by digging soil and pressing the pile synchronously through the soil sampling drilling rod. The pile sinking device has the advantages of safety, reliability, low cost, high efficiency, no noise, no pollution, no soil compression, no slurry, environmental friendliness and the like.

Description

technical field [0001] The invention relates to a prestressed centrifugal pipe pile (square pile) pile sinking device and a pile sinking method of a mid-digging and pulling anchor method, which are mainly used in civil and industrial infrastructure construction, pipe piles (square piles) supporting buildings and various The load of the large-scale equipment foundation makes buildings and structures higher, so the depth of the pile driven into the soil and the diameter of the pile directly affect the bearing capacity of the pile. Background technique [0002] The pile sinking device and the pile sinking method of existing prestressed centrifugal pipe pile (square pile) are mostly to adopt hammering method and static pressure pile method, followed by drilling soil and pressing method and bored pile method. 1. Hammering method: When the diameter of the pile is large and there are no residents around, the hammering method can be used, but there is a lot of noise, black smoke and...

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Problems solved by technology

3. Drilling and soil pressing method: that is, first use soil extraction equipment to make a hole on the original floor, and then press the pile into the hole. This method can be used in the northern region, because the water content in the soil is less, and the hole It can be formed, but in the Yangtze River Delta region in the south, the water content in the soil is high, the pilot hole cannot be formed, and the pile cannot be driven (pressed) in, and the pile is also prone to misalignment

When the piles are long, it is difficult to carry out drilling and soil extraction. At present, the deepest soil extraction can only reach about 30 meters; 4. Another pile foundation is the bored pile method: this method is to drill a hole on the ground with the pile driver , and then pouring reinforced concrete in the hole to form a pile method has the advantages of high cost, long construction period, and difficult quality assurance, and a large amount of mud is produced in the bored pile. It is difficult to dispose of the mud, and a large amount of mud is disposed of in rivers and lakes. , in the sea, in the sewers, large and small rivers, and sewers are blocked by mud. The government spends a lot to clean up the sewers and river mud every year, causing great pollution. , High-speed rail foundation piles, that is, when the bearing capacity is large, only the bored pile method can be used without compacting the soil

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