Static pressure moderately-excavated pile pressing machine and static pressure moderately-excavated pile pressing construction method

Abstract

The invention discloses a static pressure moderately-excavated pile pressing machine, which comprises a static pile pressing machine and a special crane, wherein the special crane is arranged on the static pile pressing machine; a support and a tappet rod are arranged on a machine body platform of the static pile pressing machine, and the support is fixedly connected with the tappet rod; a slave winch is connected with the top of a sealing hopper by a mooring rope and a first pulley on the top of the tappet rod; the lower part of the sealing hopper is connected with a steel pipe pile or a precast hollow pile; a master winch is connected with a hoisting ring by the mooring rope and a second pulley on the top of the tappet rod; the hoisting ring is used for hoisting a spiral drill power head; the spiral drill power head is connected with a spiral drill stem; the spiral drill stem passes through the sealing hopper and a central hole site of the steel pipe pile or the precast hollow pile to reach the bottom of the steel pipe pile or the precast hollow pile; and spiral blades are arranged on the spiral drill stem. When the static pile pressing machine presses a pile, a hard soil layer or a highly-weathered soil layer is drilled by starting the spiral drill power head, so the static pressure moderately-excavated pile pressing machine can adapt to the pile pressing operation of the soil layers with different soil textures and has a wide application range and is high in construction efficiency, and can perform operation of drilling and static pile pressing simultaneously.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering machinery, in particular to a static pressure mid-excavation pile driver and a static pressure mid-excavation pile construction method. Background technique [0002] Static pile pressing is a method of pressing prefabricated piles into the soil node by node by using static pressure (the self-weight and counterweight of the pile driver). This method has no noise, no vibration, no pollution during construction, and has little interference to the surrounding environment. It is suitable for pile foundation projects in soft soil areas, urban centers or dense buildings, as well as expansion projects for precision factories. Energy saving, environmental protection and high efficiency. [0003] Static pile drivers are divided into mechanical and hydraulic types. When pressing piles, first lift the piles, align them with the pile positions, place the piles in the pile-pressing beam, make...

AI Technical Summary

Problems solved by technology

[0004] At present, domestic and foreign pile machine operation methods are easily restricted by engineering geology and environment, which affect the piling construction period and piling quality

The existing static pressure piles only have the function of providing static pressure entry force, which is only suitable for foundation construction in soft soil layers. When the pile section encounters a hard soil layer or a strong weathered soil layer, it cannot be statically pressed piles, and its use is limited.

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