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Soil frost heaving detection device without external power supply and detection method of soil frost heaving detection device

A technology of external power supply and detection device, applied in the direction of thermal expansion coefficient of materials, etc., can solve the problems of difficult to guarantee the quality control of infrastructure construction in permafrost areas, difficult monitoring of frozen soil frost heave deformation, complex geological conditions, etc., and achieve the direction of landfill. The effect of flexible and unrestricted, flexible and unrestricted landfill depth, and low monitoring difficulty

Active Publication Date: 2019-06-14
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a soil frost heave detection device and detection method to solve the difficulty of monitoring the frost heave deformation of frozen soil due to the complex geological conditions at the construction site and the research needs of the local soil frost heave and thawing process in the laboratory , Poor accuracy, which leads to the difficulty of guaranteeing the quality control of infrastructure construction in permafrost areas

Method used

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  • Soil frost heaving detection device without external power supply and detection method of soil frost heaving detection device
  • Soil frost heaving detection device without external power supply and detection method of soil frost heaving detection device
  • Soil frost heaving detection device without external power supply and detection method of soil frost heaving detection device

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specific Embodiment approach 1

[0033] Specific implementation mode one: combine figure 1 , figure 2 and image 3 Describe this embodiment, this embodiment comprises chassis 1, sleeve pipe 2, upper anchor plate 3, tension sensor 4, elastic member 5 and connecting rod 6, described chassis 1 is provided with sleeve pipe 2, and the upper end of sleeve pipe 2 is fixed The upper anchor plate 3 is connected, and the elastic member 5 is arranged in the casing 2. The stressed end of the tension sensor 4 passes through the upper anchor plate 3 and is connected to one end of the elastic member 5, and the other end of the elastic member 5 is connected to the connecting rod 6. Chassis 1 is connected.

[0034] Further, the connecting rod 6 is preferably a steel strand, and the selected material is a high-strength and high-modulus metal material. The length of the connecting rod 6 is 1 / 3-1 / 2 of the length of the casing 2 . The arrangement of connecting rod 6 plays the effect of assisting the present invention to exte...

specific Embodiment approach 2

[0039] Embodiment 2: This embodiment is a further limitation of Embodiment 1. An inner cylinder 7 is arranged on the chassis 1. The chassis 1 and the inner cylinder 7 are coaxially arranged and the two are fixedly connected as one. The lower end of the casing 2 is set On the inner cylinder 7 , the inner wall of the casing 2 is slidingly fitted with the outer wall of the inner cylinder 7 .

[0040] Further, the connection method between the chassis 1 and the inner cylinder 7 is preferably fixed connection of a section of sleeve and a metal disc, and the diameter of the metal disc ranges from 16 to 20 cm.

specific Embodiment approach 3

[0041] Embodiment 3: This embodiment is a further limitation of Embodiment 1 or Embodiment 2. The tension sensor 4 is a hook-type electronic balance. It is an existing product, and its working process is the same as that of the existing electronic balance. The tension sensor 4 used in the present invention is a tension sensor with a built-in battery.

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Abstract

The invention relates to a soil frost heaving detection device without an external power supply and a detection method of the soil frost heaving detection device. In the construction of cold region engineering, frost heaving deformation monitoring of frozen soil is high in difficulty and low in efficiency, and most of existing soil frost heaving detection devices require continuous external powersupplies, so that corresponding matched instrument equipment on the surface is relatively numerous, the occupied area is large, surface damage parts are relatively numerous, and the operation steps are complicated. According to the device, a sleeve pipe is arranged on a base plate; an upper anchor plate is fixedly connected to the upper end of the sleeve pipe; an elastic part is arranged in the sleeve pipe; the stress end of a tension sensor penetrates through the upper anchor plate to be connected with one end of the elastic part; and the other end of the elastic part is connected with the base plate through a connecting rod. According to the method, a soil frost heaving detection device is correspondingly installed at each measuring point; frost heaving amount data of a frost heaving layer wherein each measuring point is located in different time periods is obtained through each soil frost heaving detection device; and a frost heaving deformation situation of the frozen soil in a test area is obtained by summarizing the frost heaving amount data fed back by all the measuring points. The detection device and the detection method are used for monitoring the frost heaving amount ofthe frozen soil.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and in particular relates to a soil frost heave detection device without an external power supply and a detection method thereof. Background technique [0002] China is the third largest country in the world with permafrost, and seasonal permafrost accounts for more than half of China's territory. There are countless cases of engineering disasters caused by frost heaving and thawing settlement in the construction of engineering structures in permafrost regions. Regardless of the development process of frost heave and thaw settlement in the laboratory or the accurate acquisition of the characteristic values ​​of frost heave deformation of frozen soil at the construction site, reliable detection devices and methods are needed. However, due to the different freezing depths and geological conditions of the soil on site, the frost heaving rate varies greatly. Therefore, it is necessary to o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/16
Inventor 杨英姿徐定杰徐扬
Owner HARBIN INST OF TECH
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