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Variable-rate pore pressure static sounding test device

A technology of pore pressure static penetration and testing equipment, which is applied in the direction of measuring equipment, instruments, scientific instruments, etc., can solve problems such as the inability to realize the control of drainage conditions, achieve expansion flexibility and applicability, ensure reliability, expand The effect of scope

Inactive Publication Date: 2015-01-07
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, none of the calibration trench tests can realize the control of the drainage conditions during the penetrating process of pore pressure static penetration

Method used

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  • Variable-rate pore pressure static sounding test device
  • Variable-rate pore pressure static sounding test device

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Embodiment Construction

[0021] The variable rate borehole piezostatic penetrating test device of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] Variable rate hole pressure static penetrating test device of the present invention, see figure 1 , including the pore pressure static penetration test system, the flexible wall calibration tank and the pore pressure recorder connected in sequence from top to bottom. The pore pressure static penetration test system includes a system for collecting test data and controlling the penetration rate of the probe Data acquisition and control system 1. The anti-pressure frame 2 fixed on the ground to provide penetration reaction force and the hole pressure static penetration probe fixed on the anti-pressure frame 2 through slips. The hole pressure static penetration probe passes through the data The transmission line is connected with the data acquisition and control system 1. The pore press...

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Abstract

The invention discloses a variable-rate pore pressure static sounding test device. The variable-rate pore pressure static sounding test device comprises a pore pressure static sounding test system, a flexible wall calibrating groove and a pore pressure recording instrument which are connected with one another sequentially from top to bottom, wherein the pore pressure static sounding test system comprises a data acquisition and control system, a back pressure frame, a probe rod, a side wall friction cylinder, a pore pressure filtering ring and a conical head; the flexible wall calibrating groove comprises a top plate, a bottom fixing ring, a bottom plate, a piston, an annular outer wall, an annular film, an inner wall, annular sealing rings, screw rods, test pores, drainage pores, vertical hole pressing pipes, drainage pipes, pore pressure sensor circuit components and a piston guide. The test device has the characteristics of accuracy, high repeatability and the like, and provides a powerful test tool for exploration practice and theoretical research on civil engineering.

Description

technical field [0001] The invention belongs to the field of civil engineering, and relates to a variable-rate pore pressure static penetrating test device. Background technique [0002] Pore ​​pressure static penetration testing technology refers to the use of pressure devices to press the penetration rod with the contact probe into the test soil layer, and test the cone tip resistance, side wall friction resistance and pore water pressure of the soil through the measurement system. Determine some basic physical and mechanical properties of soil, such as soil deformation modulus, soil allowable bearing capacity, etc. The international technology of pore pressure static penetration testing has a history of more than 30 years. Hole pressure static penetration test technology is widely used in the world, partially or completely replacing drilling and sampling in engineering investigation. At present, electrical static penetration testing is widely used in my country, which s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/00
Inventor 邹海峰蔡国军刘松玉
Owner SOUTHEAST UNIV