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Multi-fault shear wave velocity testing system for geotechnical model test

A geotechnical model and testing system technology, which is applied to the analysis of solids, instruments, and materials using sonic/ultrasonic/infrasonic waves. It can solve the problems of difficulty in accurate measurement of shear wave velocity, and achieve the effect of reducing test costs and avoiding interference.

Pending Publication Date: 2020-11-24
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0007] To this end, the present invention provides a multi-fault shear wave velocity testing system for geotechnical model tests to solve the problem of difficult accurate measurement of shear wave velocity in indoor geotechnical model tests such as model pile penetration in the prior art

Method used

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  • Multi-fault shear wave velocity testing system for geotechnical model test
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  • Multi-fault shear wave velocity testing system for geotechnical model test

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Embodiment 1

[0034] Such as figure 1 As shown, a multi-fault shear wave velocity testing system for geotechnical model tests in this embodiment includes a main control component 100, a signal generation and excitation channel scheduling component 200, a bending element and a supporting frame component 300, and a receiving channel scheduling component and the data acquisition component 400, the main control component 100 is electrically connected to the signal generation and excitation channel scheduling component 200 and the receiving channel scheduling and data acquisition component 400, the signal generation and excitation channel scheduling component 200 is electrically connected to the bending element and the support frame component 300, The bending element and the supporting frame assembly 300 are electrically connected to the receiving channel scheduling and data collection assembly 400 .

[0035] The technical effect achieved by this embodiment is: through a multi-fault shear wave ...

Embodiment 2

[0037] Such as Figure 2 to Figure 5 As shown, a multi-fault shear wave velocity testing system for geotechnical model tests in this embodiment includes all the technical features in Embodiment 1. In addition, the main control assembly 100 includes a computer terminal 110 and a main control Board 120, the computer terminal 110 is electrically connected with the main control board 120, the main control assembly 100 is used to realize the control of the excitation channel, the receiving channel and the control of the data acquisition system, and the main control board 120 is an Arduino board; in this embodiment , the main control component 100 also includes Arduino control software and PicoScope control software.

[0038] Secondly, the signal generation and excitation channel scheduling component 200 includes a signal generator 210, a power amplifier 220, and an excitation wave channel scheduling circuit board 230. The multiple groups of single-pulse electrical signals continuou...

Embodiment 3

[0047] Such as Figure 6 As shown, a multi-fault shear wave velocity testing system for geotechnical model tests in this embodiment includes all the technical features in Example 2, and in addition, it also includes a model box for the model pile penetration test As an example, before making the model, the bending element and the supporting frame assembly 300 are arranged in the model box, and the center line of the bending element and the supporting frame assembly 300 coincides with the penetration center line of the model pile; after that, the sand rain method is used to make the model , according to the pile penetration speed, preset the excitation channel and the receiving channel scheduling program to ensure that the transmission of each transmitter 301 and the corresponding signal acquisition of the receiver 302 are completed in sequence when the specified penetration depth is reached. After the test is completed, based on the acquisition The multi-section shear wave vel...

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Abstract

The invention discloses a multi-fault shear wave velocity testing system for a geotechnical model test. The system comprises a main control assembly, a signal generation and excitation channel scheduling assembly, a bending element and support frame assembly and a receiving channel scheduling and data acquisition assembly. The main control assembly is electrically connected with the signal generation and excitation channel scheduling assembly and the receiving channel scheduling and data acquisition assembly, the signal generation and excitation channel scheduling assembly is electrically connected with the bending element and support frame assembly, and the bending element and support frame assembly is electrically connected with the receiving channel scheduling and data acquisition assembly. The system has the effects that the problem that the shear wave velocity is difficult to accurately measure in indoor geotechnical model tests such as model pile penetration is solved. Accurate measurement of multi-fault shear wave velocity distribution is achieved, and the method is suitable for ground geotechnical model tests and centrifugal model tests. Different geotechnical model test requirements such as a model pile penetration test can be met, the device can be repeatedly applied to different test occasions, and the test cost is reduced.

Description

technical field [0001] The invention relates to the technical field of geotechnical model tests, in particular to a multi-fault shear wave velocity testing system for geotechnical model tests. Background technique [0002] Geotechnical model test technology is one of the most effective soil mechanics and geotechnical engineering research methods recognized by domestic and foreign geotechnical engineering circles; based on similarity theory, small-scale models are prepared according to prototype geometry and physical and mechanical characteristics of materials, and precise and controllable The initial and boundary conditions, and then simulate various physical processes such as consolidation, seepage, instability and failure to explore the corresponding geotechnical engineering problems; compared with field tests, geotechnical model tests have low cost, strong repeatability, and boundary conditions Clear, rich and reliable measurement data, etc., are widely used in the field ...

Claims

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Application Information

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IPC IPC(8): G01N29/07
CPCG01N29/07G01N2291/011G01N2291/0232G01N2291/0422
Inventor 张紫涛王幼行张雪东韩婧怡伍玉鑫胡晶李兆锋梁建辉陈斌祥梁美玲赵俊康魏立峰吴楠
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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