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Traffic dynamic load simulation device and test method for geotechnical and underground engineering model test

A technology for underground engineering and model testing, which is applied to measuring devices, using repetitive force/pulse force to test the strength of materials, instruments, etc. It can solve the problems of inaccurate load simulation, limited application scope, and high dynamic load cost, and achieve the test results. Reliable, extended adjustment range, low cost effect

Pending Publication Date: 2019-07-12
ANHUI UNIVERSITY OF ARCHITECTURE
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The object of the present invention is to provide a traffic dynamic load simulation device and test method for geotechnical and underground engineering model tests, to at least solve the problems of high cost of dynamic load in the current laboratory, limited scope of application, and inaccurate load simulation.

Method used

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  • Traffic dynamic load simulation device and test method for geotechnical and underground engineering model test
  • Traffic dynamic load simulation device and test method for geotechnical and underground engineering model test
  • Traffic dynamic load simulation device and test method for geotechnical and underground engineering model test

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Embodiment 1

[0050] According to specific embodiments of the present invention, such as Figure 1 to Figure 5 As shown, the present invention provides a rock soil and underground engineering model test traffic dynamic load simulation device, which includes a rock soil model 12, a loading system, a data acquisition system and a control system.

[0051] The loading system includes a load loading unit and a load loading plate, the load loading unit is connected with the load loading plate, the load loading unit includes a dynamic load loading unit, and the dynamic load loading unit includes a first hydraulic pump station 21, a dynamic load relief valve 22, a dynamic load The reversing valve 23 and the dynamic load hydraulic cylinder 24, the dynamic load hydraulic cylinder 24 is arranged on the load loading plate, and the load loading plate is loaded on the top of the rock and soil mass model 12; the data acquisition system includes a displacement sensor 41 and an earth pressure sensor 42; The...

Embodiment 2

[0074] In order to simulate the influence of traffic loads on tunnels inside rock and soil, such as Figure 7 As shown, in this embodiment, a model tunnel 121 is set inside the rock-soil mass model 12; the data acquisition system also includes strain gauges 46, and the strain gauges 46 are arranged on the peripheral wall of the model tunnel 121 for measuring the rock-soil mass model 12 The strain inside the model tunnel 121 to calculate the stress inside the model tunnel 121. Other structures are the same as those in Embodiment 1, and will not be repeated here. By setting the model tunnel 121 inside the rock-soil model 12 and measuring the influence of traffic load on the inner tunnel of the rock-soil body, the application range of the traffic dynamic load simulation device of the present invention is greatly expanded.

[0075] In summary, the rock soil and underground engineering model test traffic dynamic load simulation device and test method provided by the present invent...

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Abstract

The invention belongs to the technical field of geotechnical and underground engineering, and particularly discloses a traffic dynamic load simulation device and a test method for a geotechnical and underground engineering model test. The method comprises the following steps: firstly, preparing a geotechnical model in a model box, and respectively arranging a loading system, a data acquisition system and a control system so as to complete the construction of a simulation device; secondly, starting the simulation device, and applying load to the geotechnical model in the model box; and collecting load data borne by the geotechnical model through the data acquisition system and the influence of applied load on the geotechnical model. According to the invention, a foundation load loading unitand a dynamic load loading unit are adopted to apply load to the geotechnical model, so that the stress of the geotechnical model can reflect the prototype condition. The loading system disclosed bythe invention realizes the loading of the dynamic load by adopting the PLC to control a reversing valve, has the advantages of wide application range, low cost and strong loading capacity, can be usedfor loading multiple groups simultaneously, and has important significance for the experimental study of geotechnical and underground engineering models under the action of traffic dynamic load.

Description

technical field [0001] The invention belongs to the technical field of geotechnical and underground engineering, and in particular relates to a traffic dynamic load simulation device and a test method for model tests of geotechnical and underground engineering. Background technique [0002] In the field of geotechnical and underground engineering, people often use experimental methods to analyze and study the mechanism and essence of phenomena, so as to solve practical engineering problems and carry out theoretical verification or improvement. The test methods mainly include prototype test and model test, among which the prototype test method is limited due to reasons such as high cost, long test period, and complicated boundary conditions; the model test method can make the stress and strain of the model and prototype, etc. Similar, the failure mechanism is the same, so as to reproduce the characteristics of the prototype, and the model test overcomes the defects of high pr...

Claims

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Application Information

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IPC IPC(8): G01N3/36G01N3/02
CPCG01N3/36G01N3/02G01N2203/0005G01N2203/0019G01N2203/0048
Inventor 柳军修曹广勇程桦席培胜郝英奇潘锐
Owner ANHUI UNIVERSITY OF ARCHITECTURE
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