Railway tunnel bottom structure dynamic force model testing device and method

A technology of bottom structure and dynamic model, which is applied in the direction of measuring device, using stable tension/pressure test material strength, preparation of test samples, etc. Static force and other problems, to achieve the effect of simple structure and convenient operation

Active Publication Date: 2016-10-26
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
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Problems solved by technology

At present, there have been some dynamic model tests for the tunnel bottom structure, but in the existing model test devices, the bottom structure is directly placed on the surrounding rock, without considering the static force on the bottom structure, and all Starting from the ideal state, ignoring the actual environment and service conditions of the bottom structure

Method used

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  • Railway tunnel bottom structure dynamic force model testing device and method
  • Railway tunnel bottom structure dynamic force model testing device and method
  • Railway tunnel bottom structure dynamic force model testing device and method

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Embodiment Construction

[0026] The specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings and examples.

[0027] Such as figure 1 Shown: a dynamic model test device for the bottom structure of a railway tunnel, including a base 1, a basement surrounding rock simulation structure, a tunnel bottom simulation structure, a static loading device and a dynamic loading device;

[0028] The surrounding rock simulation structure includes springs 16 and rubber particles 20 for simulating the elastic performance of the surrounding rock and simulating the damping performance of the surrounding rock. The lower end of the spring 16 is fixed on the base 1, and the upper end is fixed on the inverted arch 10. The rubber particles 20 are scattered between the springs 16;

[0029] The simulation structure at the bottom of the tunnel includes an inverted arch 10, a filling layer 11 and a steel rail 12, and the three are fixed sequentially f...

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Abstract

The invention discloses a railway tunnel bottom structure dynamic force model testing device and method. The device comprises a base, a base surrounding rock simulation structure, a tunnel bottom simulation structure, a static force loading device and a dynamic force loading device. The device can simulate static-dynamic load coupling effect of an invert arch structure, can simulate base surrounding rock condition and structure existing damage and can truly simulate actual service environment and stress characteristic of the invert arch structure. The railway tunnel bottom structure dynamic force model testing device and method has the advantages that the device is simple in structure and simple and convenient to operate.

Description

technical field [0001] The invention belongs to the field of tunnel model tests, and in particular relates to a dynamic model test device and a test method for a railway tunnel bottom structure. Background technique [0002] The tunnel bottom structure is an important part of the tunnel support system, and it is also one of the most serious parts of tunnel diseases. After many existing railway tunnels have been in operation for a period of time, the bottom structure of the tunnels has cracked, damaged, subsided, and mud-flowing to varying degrees. The disease at the bottom of the tunnel not only deteriorates the driving conditions and directly endangers driving safety, but also costs a lot of maintenance and reinforcement all year round, which interferes with normal operation and seriously affects operational efficiency. With the development of high-speed and heavy-duty railways in my country, high-speed railway trains run at high speeds, which increase the impact on tunnel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N29/04G01N23/22G01N1/28
CPCG01N1/28G01N3/08G01N23/2206G01N29/04G01N29/048G01N2203/0003G01N2203/0019G01N2203/0066G01N2203/0067G01N2203/0075
Inventor 丁祖德李夕松张博杜永刚李晓琴王志良
Owner KUNMING UNIV OF SCI & TECH
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