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Device for measuring ground settlement

A technology of ground subsidence and lever, applied in the direction of measuring device, using optical device, using optical device to transmit sensing components, etc., can solve problems such as error and difficult control of actual situation, and achieve the effect of high precision, simple structure and accurate measurement.

Inactive Publication Date: 2011-11-09
SHANGHAI KNP CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the equipment calculates the vertical displacement of the settlement pier through the bending deformation of the cantilever beam, it is required that the deformation of the cantilever beam conforms to the rules and can be calculated, but the actual situation is difficult to control, so the actual measurement still has a certain error exists

Method used

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  • Device for measuring ground settlement
  • Device for measuring ground settlement
  • Device for measuring ground settlement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 As shown, a device for measuring ground subsidence includes a lever 11, a first support 12, a second support 13, a third support 14 and a first fiber grating sensor 15, and the lever is made of a material with small variable The straight lever formed, its center of gravity is at the center of the lever, the fiber grating sensor includes a temperature detection device, the first support 12 is located directly below the left end of the lever 11, and the first support 12 The top is hinged with the left end 111 of the lever 11, the second support 13 is located in the middle of the first support 12 and the third support 14, and is located directly below the lever 11, the second support 13 The hinge point with the lever 11 is a fulcrum 112 , and the fulcrum 112 is on the line of the center of gravity of the lever 11 . The right end 113 of the lever 11 is hinged with one end of the first fiber grating sensor 15, and the other end of the first fiber grating se...

Embodiment 2

[0038] Such as figure 2 As shown, a device for measuring ground subsidence includes a lever 11, a first support 12, a second support 13, a third support 14 and a first fiber grating sensor 15, and the lever is made of a material with small variable The straight lever formed, its center of gravity is at the center of the lever, the fiber grating sensor includes a temperature detection device, the first support 12 is located directly below the left end of the lever 11, and the first support 12 The top is hinged with the left end 111 of the lever 11, the second support 13 is located in the middle of the first support 12 and the third support 14 and is located directly below the first fiber grating sensor 15, the first The fiber grating sensor 15 is located directly below the lever 11, one end of the first fiber grating sensor 15 is hinged to a point 112 in the middle of the lever 11, and the other end of the first fiber grating sensor 15 is connected to the first fiber grating s...

Embodiment 3

[0044] Such as image 3 As shown, a device for measuring ground subsidence includes a lever 11, a first support 12, a second support 13, a third support 14, a first fiber grating sensor 15 and a second fiber grating sensor 19, the lever A straight lever made of a material with a small shape change, its center of gravity is at the center of the lever, the fiber grating sensor includes a temperature detection device, the first support 12 is located directly below the left end 111 of the lever 11, And the top of the first support 12 is hinged with the left end 111 of the lever 11, the third support 14 is located directly below the right end 113 of the lever 11, and the top of the third support 14 is located at One end of the second fiber grating sensor 19 directly above the third support 14 is hinged, and the other end of the second fiber grating sensor 19 is hinged with the right end 113 of the lever 11. The second support 13 is located at the first support 12 In the middle of ...

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Abstract

The invention belongs to the technical field of engineering measurement, and relates to a device for measuring ground settlement, in particular to a device for measuring the settlement of a tunnel or a subway pipeline by combining an optical fiber grating sensor. The device for measuring the ground settlement comprises the optical fiber grating sensor, and is characterized by also comprising a lever and three supports which are positioned under any three positions of the lever respectively; the bottoms of the three supports are fixed on the ground; the tops of the supports are connected with the lever positioned over the supports or the optical fiber grating sensor; and when the tops of the supports are connected with one end of the optical fiber grating sensor, the other end of the optical fiber grating sensor is connected with the lever positioned over the optical fiber grating sensor. The device has the advantages of simple structure and measuring accuracy.

Description

【Technical field】 [0001] The invention belongs to the technical field of engineering measurement, and relates to a device for measuring ground subsidence, in particular to a device for measuring the subsidence of tunnels or subway pipelines combined with an optical fiber grating sensor. 【Background technique】 [0002] At present, artificial level measurement and electrical level measuring instrument measurement are commonly used to detect the settlement of building structures, as well as some auxiliary measurement methods. These methods have certain deficiencies in daily measurement, especially in the measurement of ground subsidence in tunnels, subway pipes, etc., mainly in that the artificial level measurement is greatly affected by climate and artificial errors, and more importantly Yes, manual horizontal measurement of ground subsidence in tunnels, subway pipes, etc. cannot be measured online. It can only work when the subway is not in operation, and the measurement spee...

Claims

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Application Information

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IPC IPC(8): G01D5/353G01B11/02
Inventor 张杰夏懋寅何唯平
Owner SHANGHAI KNP CHEM
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