Cone penetration device and cone penetration testing method

A technology of static penetration and test method, applied in the field of geotechnical engineering investigation, can solve problems such as time-consuming and low efficiency, and achieve the effect of saving equipment cost, reducing equipment and simplifying process

Active Publication Date: 2011-04-06
SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires two sets of equipment, the static probe and the drilling rig, to be used alternately, which is time-consuming, laborious and inefficient

Method used

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  • Cone penetration device and cone penetration testing method
  • Cone penetration device and cone penetration testing method
  • Cone penetration device and cone penetration testing method

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Embodiment Construction

[0030] Such as figure 1 Shown is a schematic structural view of the static penetration penetrating equipment of the present invention. The static penetration testing equipment includes a static penetration detection frame, the static penetration detection frame is provided with a ground beam 7, and two hydraulic cylinders 3 installed on the ground beam 7 are fixed between the tops of the two hydraulic cylinders 3 Be connected with crossbeam 6, on crossbeam 6, be fixedly provided with two uprights 4 protruding downwards, be connected with stabilizing beam 13 between the ends of two uprights 4, be provided with drive device 2 above crossbeam 6, drive device 2 is A hydraulic motor is provided with two oil pipes 51, and the turntable 21 is a rotating part of the hydraulic motor. The center of rotating disk 21 is provided with hexagonal through hole 11 (seeing figure 2 ). The protective pipe assembly 1 includes several sections of protective pipes, the length of which is increa...

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PUM

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Abstract

The invention discloses a cone penetration device. The cone penetration device comprises a cone penetration machine which is provided with a cross beam. The cone penetration device also comprises a protection pipe installing device. The protection pipe installing device contains a protection pipe component, a protection pipe cap, a driving device fixed on the cross beam, a drill stem, wherein the driving device is provided with a rotating part; the lower end of the drill stem is connected with the upper end of the protection pipe component through the protection pipe cap; and the drill stem can be driven by the rotating part to rotate and move downward along the axis of the drill stem. The invention also discloses a cone penetration testing method adopting the cone penetration device. By adopting the method of the invention, the defect that when a deep cone penetration test is performed, the cone penetration machine and a drilling machine used for installing the protection pipe are required to be used alternately, can be solved; and only one device can be used to complete the cone penetration test, thus increasing the efficiency and reducing the equipment cost.

Description

technical field [0001] The invention relates to geotechnical engineering investigation, in particular to a static penetration testing equipment and a static penetration testing method using the equipment. Background technique [0002] During the penetration process of the deep hole static penetration test, the probe rod is often deflected or even broken. This is mainly because the probe is prone to deflection as the penetration depth increases; if hard soil is encountered during the downward pressure process, the penetration resistance increases, the probe rod bends, and eventually the rod breaks. At present, the main method to solve the deflection and broken rod of the probe rod is to install the static detection protection pipe in the shallow part of the static penetration test hole, that is, to send the static detection protection pipe within a certain depth range in the shallow part. function to prevent deflection; on the other hand, it limits the bending degree of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D1/02G01N33/24
Inventor 沈日庚徐敏生蒋燕
Owner SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
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