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A floating tunnel attitude measurement device, test system and test method

A technology of floating tunnels and measuring devices, applied in measuring devices, radio wave measuring systems, optical devices, etc., can solve problems such as difficulty in ensuring accuracy, complex derivation, doping, etc., achieve convenient measurement, meet test accuracy requirements, The effect of high measurement accuracy

Active Publication Date: 2022-02-15
CCCC HIGHWAY CONSULTANTS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the underwater laser method / underwater camera method obtains the attitude of the pipe section through laser capture or high-speed camera shooting of the moving position of the feature points of the floating tunnel at different times, but due to the influence of water turbidity, water density changes, waves and other factors, The measurement accuracy of underwater laser method / underwater camera method cannot be guaranteed
The velocity / acceleration sensor measurement method belongs to the inertial measurement method, which can obtain the real-time velocity / acceleration data of the pipe body, but to obtain the displacement data, it needs to be integrated once or twice, and it needs to be combined with accurate initial conditions. The derivation is complicated and difficult. Guaranteed accuracy
In addition, the use of speed and acceleration sensors for motion measurement is often mixed with more complex DC components and interference noise, which has a greater impact on the authenticity of the measurement results
The inclinometer / multi-dimensional measurement method can directly obtain the displacement / deformation of the pipe section, but the frequency of data collection and the degree of automation are very low, and real-time collection cannot be realized
[0003] The existing underwater measurement methods cannot verify its accuracy in the overall model test of the floating tunnel. Unlike the marine riser, which does not have strict requirements on displacement, the underwater attitude control of the floating tunnel has high requirements. For long flexible structures , displacement monitoring is very important, there is no successful precedent so far

Method used

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  • A floating tunnel attitude measurement device, test system and test method
  • A floating tunnel attitude measurement device, test system and test method
  • A floating tunnel attitude measurement device, test system and test method

Examples

Experimental program
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Effect test

Embodiment 1

[0068] A floating tunnel pipe section attitude measurement device, including a support 2 for fixing on a floating tunnel model pipe section 1, a background plate 3 is welded and fixed on the support 2, and the background plate 3 is provided with several characteristic surfaces. A plurality of feature points 4 are set on the feature surface. Since the bracket 2 has a certain height, the feature point 4 on the background plate 3 can be completely exposed to the water surface, and the setting of the feature point 4 should satisfy whether the UX, UY, UZ, ROTX, The motion components in the six directions of ROTY and ROTZ.

[0069] Although the position and direction of the feature surface and the distribution form of the feature points do not affect the measured attitude of the model pipe section. However, for the convenience of calculation, the model pipe section 1 in this embodiment adopts a circular pipe structure, and the distribution of characteristic surfaces and characteris...

Embodiment 2

[0078] like Figure 13-Figure 14 As shown, in the overall physical model test of the floating tunnel, when the buoyancy of the model pipe section 1 is less than its own gravity, the anchoring system is designed as a buoy type, and the buoyancy-to-weight ratio of the model pipe section is generally designed to be slightly less than 1. When using the bracket conversion method to measure the device, it should be installed in the middle of the two buoys 9, and ensure that the clamp 6 and the model pipe section 1, the bracket 2 and the clamp 6, the background plate 3 and the bracket 2 are firmly connected, and no relative displacement occurs. When measuring the buoy-type floating tunnel, the elevation of the feature point 4 should be greater than the top elevation of the buoy 9, so as to avoid the influence of the buoy 9 on the measurement.

[0079] For buoy-type floating tunnels, the position of the clamp 6 is not at the buckle position of the model pipe section 1 itself, so the c...

Embodiment 3

[0082] A method for testing the attitude of a pipe section of a floating tunnel, comprising the following steps:

[0083] Step 1: Make the bracket 2, the bracket 2 can be a rod-shaped structure, such as Figure 9 As shown, it can also be a truss structure, such as Figure 10 shown.

[0084] Step 2: Connect the clamp 6 to the model pipe section 1 on the shore, such as Figure 15-Figure 16 As shown, the clamp 6 includes two clamp assemblies 61. During installation, the two clamp assemblies 61 are respectively clamped with the model pipe section 1, and then the two clamp assemblies 61 are connected by welding, so that the clamp 6 is connected with the model pipe section 1.

[0085] Step 3: If Figure 17 As shown, the background plate 3 with feature points 4 is made according to the requirements, and the colors of the feature points 4 and the background plate 3 should have obvious grayscale contrast according to the shooting and capturing requirements of the high-speed camera ...

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Abstract

The invention discloses a suspension tunnel pipe section attitude measurement device, a test system and a test method. The measurement device includes a bracket for fixedly connecting with a suspension tunnel model pipe section, a background plate fixedly connected to the bracket, and a background plate provided on the background plate. At least two feature points, and an image acquisition device for performing real-time image acquisition on the feature points; the test system includes a pool, a model pipe section, and any of the measurement devices, the model pipe section is placed in the pool, and the support of the measurement device is fixedly installed on the model The test method is to make a bracket and a background plate; the background plate is fixedly installed on the bracket, the bracket is fixedly installed on the model pipe section, and the model pipe section is placed in the pool; the initial data of the feature points are recorded by the image acquisition device, and the The attitude of the pipe section is leveled; the pool is filled with water to ensure that the feature points are located above the water surface, and a working condition test is carried out, and the image acquisition device is used to record the position changes of the feature points.

Description

technical field [0001] The invention relates to the technical field of floating tunnels, in particular to a floating tunnel pipe segment attitude measurement device, test system and test method based on a support conversion method. Background technique [0002] At present, the attitude measurement of the pipe section in the physical model test of the floating tunnel is carried out underwater, and the main measurement methods include: ① underwater laser method / underwater camera method; ② speed / acceleration sensor measurement method; ③ inclinometer / multi-dimensional Measurement system measurement method, etc. Among them, the underwater laser method / underwater camera method obtains the attitude of the pipe section through laser capture or high-speed camera shooting of the moving position of the feature points of the floating tunnel at different times, but due to the influence of water turbidity, water density changes, waves and other factors, The measurement accuracy of underw...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/00G01C11/36G01B11/03
CPCG01M13/00G01C11/00G01B11/03G01C11/36
Inventor 林巍刘凌锋刘国辉尹海卿刘晓东林鸣
Owner CCCC HIGHWAY CONSULTANTS
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