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Penetrometer with dynamic sounding and static sounding and measuring method thereof

A dynamic penetration and static penetration technology, which is applied in the field of foundation soil survey, construction, infrastructure engineering, etc., can solve the problems of large disturbance, cumbersome testing instruments, inaccurate testing, etc., and achieve high repeatability and quality. Well-Controlled, Simple-Structured Effects

Active Publication Date: 2017-05-31
SOUTHEAST UNIV
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a penetrometer with both dynamic penetrability and static penetrability, so as to solve the problems of traditional railway track structure safety design testing instruments, such as bulky, large disturbance, difficult supporting conditions, and inaccurate testing.

Method used

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  • Penetrometer with dynamic sounding and static sounding and measuring method thereof
  • Penetrometer with dynamic sounding and static sounding and measuring method thereof
  • Penetrometer with dynamic sounding and static sounding and measuring method thereof

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] Such as figure 1 As shown, a penetrometer with both dynamic penetrating and static penetrating probes of the present invention includes an outer probe rod 3, an inner probe rod 4, a bridge box 9, a data acquisition instrument 10, a computer 11, an outer probe rod 3 is wrapped on the outside of the inner probe rod 4, and is in sliding contact with the outer wall of the inner probe rod 4, and the upper end of the inner probe rod 4 has an inner probe rod extension part 2 that is not wrapped by the outer probe rod 3, and the bottom end of the inner probe rod 4 A micro-cone 5 is provided, and the micro-cone 5 includes a friction cylinder 7 connected to the bottom end of the inner probe rod 4, a side wall friction sensor 6 disposed inside the friction cylinder 7, and a cone tip sensor 8 disposed at the bottom end of the friction cylinder 7; The side wall friction sen...

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Abstract

The invention discloses a penetrometer with dynamic sounding and static sounding. The penetrometer comprises an outer probing rod, an inner probing rod, an electrical bridge box, a data acquisition instrument and a computer. The outer probing rod covers the inner probing rod and makes contact with the outer wall of the inner probing rod in a sliding mode. The upper end of the inner probing rod is provided with an inner probing rod extending part which is not covered by the outer probing rod. A micro-cone is arranged at the bottom end of the inner probing rod. The micro cone comprises a friction cylinder connected with the bottom end of the inner probing rod, a side wall frictional resistance sensor arranged on the inner side of the friction cylinder and a conical tip sensor arranged at the bottom end of the friction cylinder. The side wall frictional resistance sensor and the conical tip resistance sensor both are connected with the electrical bridge box through cables. The electrical bridge box is connected with the data acquisition instrument. The data acquisition instrument is connected with the computer. The problems that a traditional railway track structure safety design test instrument is heavy, disturbance is large, the required matched condition is difficult, and testing is inaccurate are solved.

Description

technical field [0001] The invention relates to a new penetrometer with both dynamic penetrability and static penetrability for testing the mechanical properties of soil on railway track subgrade, which belongs to the field of geotechnical engineering railway subgrade testing and has both dynamic and static penetrometer. detection device. Background technique [0002] With its advantages of safety, economy, and wide coverage, railway transportation will become the mainstream of transportation in the future, and the development and advancement of railway transportation technology will be accelerated. Large wheel loads, lateral pressure, strong traction and braking forces act on traditional railway lines, which will cause damage to the track structure and cause serious damage to passengers. So it is particularly important to evaluate the railway track structure. [0003] Some nondestructive testing methods, such as the application of ground penetrating radar (GPR), have eval...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D1/00
CPCE02D1/00
Inventor 蔡国军段伟刘松玉
Owner SOUTHEAST UNIV
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