Multifunctional geotechnical model testing system and method

A geotechnical model and test system technology, which is used in soil material testing, material inspection products, preparation of test samples, etc., can solve the problem that the model box cannot simulate the temperature field, etc. Effect

Pending Publication Date: 2018-04-13
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problem that the existing model box cannot simulate the conditions of the temperature field, and further provides a multifunctional geotechnical model test system and method

Method used

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  • Multifunctional geotechnical model testing system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1: Simulation of Post-construction Behavior of Highway Soft Soil Foundation in Seasonally Frozen Areas

[0035] Step 1: According to the aforementioned content and the needs of the test conditions, it is necessary to determine the size of the model: length × width × height = 1.2m × 0.6m × 0.9m, the similarity ratio of the model is 1:50, the length of the subgrade model is 0.52m, and the slope The ratio is 1:1.5, and the model box is made according to the content of the invention and the established size, and a loading mechanism and a water supply mechanism are installed on the upper part of the model box;

[0036] Step 2: prepare simulated soil materials, take a sufficient amount of muddy clay and ordinary clay from the construction site for use;

[0037] Step 3: Paste a film ruler on the observation surface of the side wall of the model box, paste a layer of filter paper on the upper bottom plate 4, and start filling the simulated muddy clay material. After fil...

Embodiment 2

[0041] Example 2: Stability Simulation of Highway Soil Slope

[0042] Step 1: According to the aforementioned content and the needs of the test conditions, it is necessary to determine the size of the model: length × width × height = 1.2m × 0.6m × 0.9m, the similarity ratio of the model is 1:50, the length of the subgrade model is 0.52m, and the slope The ratio is 1:1.5, and the model box E is made according to the content of the invention and the size formulated, and the top plate 2 of the model box E is equipped with a water supply mechanism;

[0043] Step 2: First remove the top plate 2 of the model box E, fill the soil subgrade inside the model box E, build the slope model, bury the earth pressure sensor at the predetermined position, connect the sensor wiring through the small hole on the side wall and collect the data Connect the instrument 18, cover the top plate 2, adjust the temperature through the temperature control panel on the refrigeration compressor 10, make the...

Embodiment 3

[0046] Example 3: Simulation of dry-wet cycle characteristics of highway expansive soil

[0047] Step 1: According to the aforementioned content and the needs of the test conditions, it is necessary to determine the size of the model: length × width × height = 1.2m × 0.6m × 0.9m, the similarity ratio of the model is 1:50, the length of the subgrade model is 0.52m, and the slope The ratio is 1:1.5, and the model box E is made according to the content of the invention and the size formulated, and the top plate 2 of the model box E is equipped with a water supply mechanism A and a heating mechanism C;

[0048] Step 2: first remove the top plate 2 of the model box E, fill the expansive soil embankment inside the model box E, build the slope model, cover the top plate 2, adjust the heating temperature of the heating pipe 20 through the control panel, and make the model When the ambient temperature inside the box E reaches the simulated temperature, open the main valve of the water ...

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Abstract

The invention provides a multifunctional geotechnical model testing system and method and relates to a geotechnical model testing system and method, aiming at solving the problem that an existing model box cannot simulate conditions of a temperature field. The multifunctional geotechnical model testing system comprises an outer framework, the model box, a rainfall simulation mechanism, a refrigerating mechanism, a heating mechanism and a data acquisition system, wherein the model box is mounted on the outer framework; a water outlet of the rainfall simulation mechanism is arranged at the top of the model box; the refrigerating mechanism and the heating mechanism can provide environment temperature to the model box; the data acquisition system is used for acquiring frozen soil working condition indexes in the model box. The method comprises the following steps: 1, determining the size and the model similarity ratio of the model box and the length and the slope ratio of a roadbed model;2, preparing a soil body material for simulation; 3, establishing a corresponding simulation procedure; 4, acquiring and displaying data. The multifunctional geotechnical model testing system and method are used for a frozen soil test.

Description

technical field [0001] The invention relates to a geotechnical model test system and method, in particular to a multifunctional geotechnical model test system and method, belonging to the field of geotechnical engineering indoor model tests. Background technique [0002] Indoor model testing has become a major means of research in the field of geotechnical engineering. Indoor model testing refers to the study of the physical and mechanical state of rock and soil by simulating various actual working conditions in the laboratory according to special equipment. The uneven settlement of the foundation soil will not only reduce the flatness of the pavement structure, but also reduce the overall strength of the pavement structure, affect the normal operation of traffic, and greatly increase the cost of road maintenance and repair. Landslide is a serious geological disaster, which may not only hinder traffic, but also threaten people's life and property safety. Landslides are rela...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24G01N1/28
CPCG01N1/28G01N33/24
Inventor 韩春鹏张建田家忆李建华
Owner NORTHEAST FORESTRY UNIVERSITY
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