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Segment joint shear stiffness measurement method, system, device and storage medium

A segment joint and segment technology, applied in the field of measurement, can solve the problems of high measurement cost and many measurement consumables, and achieve the effect of high measurement accuracy

Active Publication Date: 2020-12-08
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method, system, equipment and storage medium for measuring the shear stiffness of segment joints, aiming to solve the problems of excessive measurement consumables and high measurement costs in the prior art

Method used

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  • Segment joint shear stiffness measurement method, system, device and storage medium
  • Segment joint shear stiffness measurement method, system, device and storage medium
  • Segment joint shear stiffness measurement method, system, device and storage medium

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Embodiment 1

[0028] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, systems, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

[0029] It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude one or more other Presence or addition of features, wholes, steps, operations, elements, components and / or collections thereof.

[0030] It should...

Embodiment 2

[0113] Figure 8 A schematic structural diagram of a shear stiffness measurement system for a segment joint provided in Embodiment 2 of the present invention is shown. For convenience of description, only parts related to the embodiment of the present invention are shown. In the embodiment of the present invention, the segment joint shear stiffness measurement system includes:

[0114] The calibration unit 81 is configured to use two cameras to photograph calibration points on the tube to be measured, obtain pixel coordinates and three-dimensional coordinates of the calibration points, and calibrate the cameras respectively to obtain calibration parameters corresponding to the cameras;

[0115] The three-dimensional coordinate calculation unit 82, the segment to be measured generates an offset amount under the continuous action of the shear force, obtains the starting point image and the end point image of the monitoring point at the joint of the segment to be measured through...

Embodiment 3

[0128] Figure 9 It is a schematic structural diagram of an electronic device provided by an embodiment of the present application. Such as Figure 9 As shown, the electronic device 9 of this embodiment includes: at least one processor 90 ( Figure 9 Only one processor is shown in ), a memory 91, and a computer program 92 stored in the memory 91 and operable on the at least one processor 90, when the processor 90 executes the computer program 92, the above-mentioned Steps in any of the various method embodiments;

[0129] Utilizing two cameras to photograph calibration points on the tube to be measured, obtaining pixel coordinates and three-dimensional coordinates of the calibration points, and respectively calibrating the cameras to obtain calibration parameters corresponding to the cameras;

[0130] Under the continuous action of the shear force, the segment to be tested produces a displacement amount, and the starting point image and the end point image of the monitoring...

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Abstract

The invention is suitable for the technical field of measurement, and provides a segment joint shear stiffness measurement method, a system, a device and a storage medium, and the method comprises thesteps: photographing a calibration point on a to-be-measured segment through two cameras, obtaining the pixel coordinates and three-dimensional coordinates of the calibration point, respectively calibrating the cameras, and obtaining the calibration parameters corresponding to the cameras; the segment to be measured generates slab staggering quantity under the continuous action of shearing force,a starting point image and an end point image of a monitoring point at the joint of the segment to be measured are obtained through a camera, pixel coordinates of the monitoring point in the startingpoint image and the end point image are read, and three-dimensional coordinates of the monitoring point are calculated in combination with calibration parameters corresponding to the camera; and according to the pixel coordinates of the monitoring points in the starting point image and the terminal point image, the slab staggering amount of the to-be-measured segment under the action of shearingforce is obtained, and the shearing rigidity value of the to-be-measured segment is calculated. A non-contact camera shooting measurement mode is adopted, a large number of consumables are prevented from being generated in the measurement process, the measurement precision is high, and the measurement cost is low.

Description

technical field [0001] The invention belongs to the technical field of measurement, and in particular relates to a method, system, equipment and storage medium for measuring the shear stiffness of segment joints. Background technique [0002] The lining structure in a shield tunnel is a discontinuous structure composed of several segments connected by bolts. It is difficult to determine the mechanical properties of the segment joints. Among the several parameters of the joint mechanical properties, the shear stiffness of the joint has a great influence on the calculation of the internal force of the structure. Therefore, the calculation of joint shear stiffness is an important research content. The traditional method of measuring the shear stiffness of joints is usually to stick resistance strain gauges on the joint structure, which is also called electrical measurement. This method is easy to operate and widely used, but it also has some disadvantages. For example, a strai...

Claims

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Application Information

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IPC IPC(8): G01N3/06G01N3/24G01M5/00
CPCG01N3/068G01N3/24G01M5/0075G01N2203/0025G01N2203/0641
Inventor 黄林冲黄旭民梁禹马建军
Owner SUN YAT SEN UNIV
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