Sunken three-dimensional geotechnical engineering geological model test system and test method

A technology of geotechnical engineering and test system, applied in the field of submerged three-dimensional geotechnical engineering geological model test system, can solve problems such as difficulty in finding out mechanical response, difficulty in quality control, and complex construction mechanical properties.

Pending Publication Date: 2020-01-21
FUJIAN UNIV OF TECH
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Problems solved by technology

Due to the particularity of underground engineering, its construction environment is poor, construction technology requirements are high, and there are problems with the interaction between structures and discrete rock-soil media, and its construction mechanical properties are extremely complex. Through a single theoretical analysis or numerical simulation method There are certain limitations, and it is difficult to find out its mechanical response. Physical model test is an important research method, and due to the nature of underground engineering hidden projects, quality control is difficult, and the reasonable choice of construction technology also needs to be demonstrated through experiments.

Method used

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  • Sunken three-dimensional geotechnical engineering geological model test system and test method
  • Sunken three-dimensional geotechnical engineering geological model test system and test method
  • Sunken three-dimensional geotechnical engineering geological model test system and test method

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Embodiment 1

[0038] Embodiment 1: A sinking three-dimensional geotechnical engineering geological model test system, such as figure 1 , figure 2 and image 3 As shown, it includes a transparent model box 1 that can be opened and closed at the top, a load control system, a data acquisition system 2 and a sunken test platform 6 system. A geotechnical engineering model 3 is arranged in the transparent model box 1 . The sunken test platform 6 system includes a foundation pit 4, a column 5 pre-embedded and fixed in the foundation pit 4 and attached to the inner wall of the foundation pit 4, a test platform 6 connected to the side wall of the column 5, and a space between the installation and the column 5. The stairs 24, the transparent model box 1 are installed on the top surface of the test platform 6. Electric control slide rails 7 are symmetrically installed on the side walls of the columns 5 , and both ends of the test platform 6 are fixedly connected with the electric control slide rai...

Embodiment 2

[0055] Embodiment 2: a kind of submerged three-dimensional geotechnical engineering geological model test method, such as Figure 4 shown, including the following steps:

[0056] 1) According to the principle of material similarity, prepare rock and soil mass or take samples on site for future use.

[0057] 2) The rock and soil mass is laid layer by layer in the transparent model box 1 to simulate the actual geological state.

[0058] 3) Set up geotechnical engineering models 3 such as tunnels, foundation pits or deep foundations in the geotechnical body according to research needs, and close the roof at the top of the transparent model box 1 .

[0059] 4) Start the data acquisition system 2 to collect the overall image information, local image information, stress and strain and other parameter information of the geotechnical engineering model 3 in real time.

[0060] 5) Adjust the load control system to increase the load to the pressure under simulated working conditions, a...

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Abstract

The invention discloses a sunken three-dimensional geotechnical engineering geological model test system and a test method, and relates to the technical field of tunnel and underground geotechnical engineering experiments. The key points of the technical scheme are as follows: the experimental device comprises a transparent model box, a load control system, a data acquisition system, a sunken testplatform system and a geotechnical engineering model, the sunken test platform system comprises a foundation pit, stand columns, a test platform and stairs, wherein electric control sliding rails aresymmetrically arranged on the side walls of the stand columns; a seepage control system is arranged at the top end of the transparent model box; the load control system comprises a loading frame, a vertical oil cylinder and a horizontal oil cylinder; and the data acquisition system comprises a high-definition digital camera, a high-magnification stereoscopic microscope device, a dynamic strain data acquisition device and a computer device. The stress deformation development rule and the damage phenomenon of the geotechnical model under the multi-factor coupling effect can be finely and visually obtained, the complex macro-micro damage mechanism of geotechnical engineering can be deeply known, and technical support is provided for proposing effective prevention and treatment engineering measures.

Description

technical field [0001] The invention relates to the technical field of tunnel and underground geotechnical engineering experiments, more specifically, it relates to a submerged three-dimensional geotechnical engineering geological model test system and a test method. Background technique [0002] Tunnel and underground geotechnical engineering includes tunnel engineering, station foundation pit engineering, soft foundation reinforcement engineering, deep foundation engineering and underground comprehensive pipe gallery engineering, etc. Due to the particularity of underground engineering, its construction environment is poor, construction technology requirements are high, and there are problems with the interaction between structures and discrete rock-soil media, and its construction mechanical properties are extremely complex. Through a single theoretical analysis or numerical simulation method There are certain limitations, and it is difficult to find out its mechanical re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 姚志雄吉磊刘耀星刘国买吴波李志高赵文娟林金木黄国双林渊杨欣李明赵振伟康帅文王文华刘基灿蔡慧君
Owner FUJIAN UNIV OF TECH
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