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Spinning drilling tool for sinking pipe

A technology of immersed pipe and drilling tools, which is applied in the direction of vibration drilling, etc., and can solve the problems that it is difficult to pass through the gravel layer or hard layer, and the overall bearing capacity of the pile is difficult to be greatly improved.

Inactive Publication Date: 2005-12-28
孙新河
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

But this spinning pipe sinking pile machine has several defects: one is that it is difficult to pass through the gravel layer or hard layer; the other is that the overall bearing capacity of the pile is difficult to be greatly improved due to the small diameter of the pile body

Method used

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  • Spinning drilling tool for sinking pipe
  • Spinning drilling tool for sinking pipe
  • Spinning drilling tool for sinking pipe

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Embodiment Construction

[0046] specific implementation

[0047] preferred image 3 and Figure 18 and Figure 26 the options offered;

[0048] According to preliminary calculations, the concrete volume or mortar volume of the spinning-sinking-tube-screw pile only accounts for 30-50% of the volume of the pile with the same outer diameter. In terms of bearing capacity, because this kind of pile is suitable for soft ground, the frictional resistance between the soil and the pile is much smaller than the shear stress of the soil in the soft ground. Therefore, the bearing capacity of the spinning and sinking tube screw pile is higher than that of the pile with the same diameter, but the material consumption is less than half of the former, so it has a wide application prospect for reducing the construction cost.

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Abstract

The rotary extrusion settling pipe drilling tool which has one function at least is installed the rapping gear, soil channel or switch for forming it and spiral forming device. The drilling tool can not only cross the hard formation but set the rotary extrusion settling pipe screw pile, so it can improve the bearing capacity and the adaptability of the pile which can instead the vibrosinking pile, static pressure pile, long screw pile and deep stirring pile.

Description

technical field [0001] The invention relates to a construction drilling tool for spinning and sinking pipe grouting piles in construction engineering. Background technique [0002] The existing spinning immersed pipe drilling tool is composed of an upper rotating drive device or a guide lifting and pressing device, a spinning immersed pipe and a drill bit. The spinning pipe sinking pile machine has the advantages of no soil discharge, low cost, no noise and mud pollution and There is no vibration damage and the quality of the pile body is good, and it has a higher bearing capacity than the long auger bored pile and the mud wall bored pile of the same size, so it has a better development prospect. But this spinning pipe sinking pile machine has several defects: one is difficult to pass through the gravel layer or hard layer; the other is that the overall bearing capacity of the pile is difficult to greatly improve because the diameter of the pile body is small. This has solv...

Claims

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Application Information

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IPC IPC(8): E21B7/24
Inventor 孙新河
Owner 孙新河