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Weak soil dynamic behavior testing system for continuously and finely tracking in overall-process manner

A technology of dynamic characteristics and test system, which is applied in the direction of testing material strength by applying repetitive force/pulsation force and testing material strength by applying stable tension/compression, which can solve the problems of discrete and poor connection of test points and test phenomena that cannot be overcome Insufficient comprehensiveness and three-dimensionality, increasing test errors and uncertainties, etc., to achieve the effect of simple structure, highly convenient instrument, and good stability

Inactive Publication Date: 2012-08-15
SUN YAT SEN UNIV
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  • Application Information

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Problems solved by technology

This not only makes the test cumbersome, increases the error and uncertainty of the test, but also cannot overcome the shortcomings of discrete test points and poor connection.
In addition, the previous testing instruments can only observe part of the specimen, and the test phenomena obtained are not comprehensive and three-dimensional, and even important test phenomena will be ignored

Method used

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  • Weak soil dynamic behavior testing system for continuously and finely tracking in overall-process manner
  • Weak soil dynamic behavior testing system for continuously and finely tracking in overall-process manner
  • Weak soil dynamic behavior testing system for continuously and finely tracking in overall-process manner

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Embodiment Construction

[0053] Attached below figure 1 with 2 Describe in detail how to use the present invention.

[0054] Concrete use steps of the present invention are as follows:

[0055] 1. Place the test equipment in sequence and connect each subsystem.

[0056] 2. Place the soft soil sample in the pressure chamber A, and install the axial and radial data measurement systems C1 and C2.

[0057] 3. Start the power supply, and set the loading control method, loading rate and load level through the servo control system D.

[0058] 4. Adjust the microscopic observation system E so that it can clearly observe the surface of the soft soil; at the same time set the axial measurement system and radial confining pressure measurement system C, as well as the data acquisition frequency and post-processing requirements.

[0059] 5. Start the pressure control system B, and control the applied axial pressure and confining pressure in the pressure chamber through the axial pressurization control system ...

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Abstract

The invention discloses a weak soil dynamic behavior testing system for continuously and finely tracking in an overall-process manner. The weak soil power property testing system consists of a pressure chamber, a pressure control system, an excitation system, a measurement system, a servo control system, a microscopy observing system and a computer system. The weak soil power property testing system provided by the invention has the main advantages of overall-process continuous and fine tracking and high-precision measurement under the action of water. Furthermore, the multi-scale panorama three-dimensional observation can be realized, so as to finally show power properties of weak soil.

Description

technical field [0001] The invention belongs to the field of geotechnical engineering test instruments, and in particular relates to continuous fine tracking and high-precision measurement of the dynamic characteristics (dynamic strength, dynamic shear modulus, damping ratio, etc.) of soft soil in the whole process under the condition of water action, And involved in the design of the experimental program. Background technique [0002] Due to the low strength of soft soil, high compressibility, low water permeability, and rheology, the construction of its overlying structures becomes difficult and complicated. Under dynamic loads (seismic loads, wave loads, traffic loads, etc.) Prone to engineering accidents. It is an important way to reduce the accidents and losses of building structures on soft foundations by testing the soft soil of the foundation, mastering various dynamic characteristic indexes of the soft soil, and taking corresponding disaster prevention measures. ...

Claims

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Application Information

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IPC IPC(8): G01N3/12G01N3/32
Inventor 刘镇周翠英尤帆帆杨旭
Owner SUN YAT SEN UNIV
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