Soil mass total stress component sensing ball and using method thereof

A technology of stress component and sensing ball, which is applied in the direction of fluid pressure measurement, force component measurement, and fluid pressure measurement using optical methods, can solve the problems of complex stress state changes, difficulty in application, and large test errors, etc., to achieve Improve measurement accuracy and measurement reliability, high stress measurement redundancy, and avoid errors

Active Publication Date: 2020-06-19
NANJING UNIV OF TECH +1
View PDF9 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above two patents are based on the polyhedral arrangement of ordinary earth pressure cells to test the multi-directional stress state inside the soil, but because the number of earth pressure cells arranged is small and the collected data is limited, the polyhedral arrangement has a great impact on the in-situ stress of the soil. Large disturbances lead to large test errors
Moreover, the earth pressure cell group arranged in polyhedron needs to determine the installation direction in advance to accurately reflect the soil stress, which is difficult to apply when the stress state changes complex (especially the ubiquitous situation involving the rotation of the main direction of stress)

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Soil mass total stress component sensing ball and using method thereof
  • Soil mass total stress component sensing ball and using method thereof
  • Soil mass total stress component sensing ball and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0037] Such as Figure 1 to Figure 7 As shown, the embodiment of the present invention discloses a soil full stress component sensing ball, which includes an icosahedron skeleton 1 , a spherical shell 2 , a silica gel layer 3 and a weight adjustment mechanism 4 .

[0038] The icosahedron skeleton 1 is a metal material, and the icosahedron has eighteen first faces 11 and two second faces 12 . The two second surfaces 12 are arranged opposite to each other. A conical force tran...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a soil mass total stress component sensing ball and a using method thereof. The soil mass total stress component sensing ball comprises a regular icosahedron framework, a spherical shell, and a weight adjusting mechanism for adjusting the overall weight of a sensing ball. Sixteen distributed optical fibers are arranged on the face, away from a conical force transmission cap,of each first steel sheet and used for testing stress of the conical force transmission cap, and the two distributed optical fibers are used for conducting temperature correction on deformation of the distributed optical fibers. According to the soil mass total stress component sensing ball and the using method thereof, six effective stress components in the soil mass are obtained through wavelength change values of light in the sixteen distributed optical fibers and temperature correction based on a conversion formula, more data are collected, and the measurement precision is high. The placement direction does not need to be determined in advance and the soil mass total stress component sensing ball and the using method thereof are also suitable for soil bodies with complex stress statechanges.

Description

technical field [0001] The invention relates to the technical field of soil stress testing, in particular to a soil full stress component sensing ball and a use method thereof. Background technique [0002] In engineering activities such as housing construction, underground space development, and geological disaster prevention and control, the internal stress change process of the soil is very complicated. There are continuous changes in the magnitude of the principal stress and continuous changes in the direction of the principal stress. The stress at any two points in space The status is also different. In addition, factors such as rainfall, leaking water pipes, adjacent traffic, waves, etc. can all cause constant changes in stress. Under unfavorable conditions, the stress in the soil will develop in the direction of destruction, causing immeasurable losses to engineering construction. Therefore, it is an important part of urban and rural construction and disaster preven...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01L5/16G01L11/02G01L19/04G01L1/24G01L19/06G01L19/14
CPCG01L5/16G01L11/025G01L19/04G01L1/247G01L19/14G01L19/0654
Inventor 申志福朱玲裕高洪梅王志华刘璐
Owner NANJING UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products