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Piezocone penetration test calibration tank system

A technology of pore pressure static penetration and calibration tank, which is applied in the field of calibration tank system, can solve the problems of long period and inability to determine the change of a single soil parameter, and achieve the effect of reducing volume, improving repeatability and improving uniformity

Active Publication Date: 2016-10-12
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

A large amount of data must be accumulated for these parameters, and the final soil parameters must be obtained through corresponding theoretical derivations and back-calculation formulas. The relevant field in-situ tests have a longer cycle than indoor tests, and cannot determine the change of a single soil parameter.

Method used

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  • Piezocone penetration test calibration tank system
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  • Piezocone penetration test calibration tank system

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] The present invention provides a calibration tank system for pore pressure static penetrating testing. The outermost periphery of the calibration tank system is an axial loading frame 11, and an external pressure gauge 1 and an external pressure gauge 1 are arranged in the frame. The external probe rod 2 connected to the bottom and the linear bearing 3 connected to the external probe rod 2 are axially loaded. The frame 11 is connected to the calibration tank body through the external pressure gauge 1, the external probe rod 2 and the linear bearing 3;

[0026] The tank body of the calibration tank is a sealed laterally restricted container, which contains a top plate 8, an internal pressure gauge 4 connected to the top plate 8 and arranged on the lower surface of the top plate 8, connected to the internal pressure gauge 4 and set on the internal pressure gauge 4...

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Abstract

The invention discloses a piezocone penetration test calibration tank system, characterized in that an axial loading frame (11) is provided on the outermost, an external pressure meter (1), an external probe (2) connected to the bottom of the external pressure meter (1) and a linear bearing (3) connected with the external probe (2) are arranged in the frame, and the axial loading frame (11) is connected with a calibration tank body via the external pressure meter (1), the external probe (2) and the linear bearing (3); in the piezocone penetration test calibration tank system, full consideration is given to the impact of medium- and low-density sandy soil upon soil liquefaction and strain softening, more realistic and reliable prediction is made for the soil properties of medium- and low-density sandy soil through precision instrumental equipment and delicate experimental operations, and supplemental basis is provided for field piezocone penetration testing.

Description

technical field [0001] The invention relates to a calibration tank system that can be used for pore pressure static penetration testing, which is applied in the field of geotechnical engineering, and can realize indoor simulation of on-site pore pressure static penetration testing under certain conditions, and then use relevant experience The establishment of formulas and parameter analysis provide supplementary basis. Background technique [0002] Due to the close relationship between geotechnical engineering parameters and complex and changeable natural conditions, determining geotechnical engineering parameters and rational design has become a difficult point in engineering construction. one of the key technologies. Borehole sampling and indoor testing will cause soil sample disturbance, and the test results are difficult to reflect the real condition of the foundation rock and soil. The in-situ testing technology is a technique for testing the performance of geotechnica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 刘松玉杨岩蔡国军李俊才
Owner SOUTHEAST UNIV
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