Static sounding device and static sounding testing method

A static penetration and test method technology, applied in the field of geotechnical engineering investigation, can solve problems such as low efficiency and time-consuming, and achieve the effects of reducing equipment, saving equipment costs, and improving work efficiency
CN102002932BActive Publication Date: 2012-05-02SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
Publication Date
2012-05-02

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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 thedriving 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.
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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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