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Three-dimensional loading device for tunnel model experiment

A technology of three-dimensional loading and tunnel model, which is applied in the field of rails and can solve the problems of difficulty in applying three-dimensional stress and difficulty in applying it.

Active Publication Date: 2015-05-20
BEIJING JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The embodiments of the present invention mainly aim at the difficult or difficult application of three-dimensional stress in the current test, and provide experimental reference for the scientific research and design of tunnel engineering in the future

Method used

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  • Three-dimensional loading device for tunnel model experiment
  • Three-dimensional loading device for tunnel model experiment
  • Three-dimensional loading device for tunnel model experiment

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Embodiment 1

[0027] In order to solve the above-mentioned shortcomings of the prior art, an embodiment of the present invention designs a three-dimensional loading device for tunnel model experiments. The structural diagram of the three-dimensional loading device for tunnel model experiments is as follows figure 1 As shown, it includes a reaction frame 1, a loading jack 3, a first loading block 4 and a second loading block 5; the first loading block 4 is arranged in the reaction frame 1; the second loading block 5 is located in the first loading block 4 Above; the loading jack 3 is located between the reaction force frame 1 and the first loading block 4 and the second loading block 5 .

[0028] In a preferred solution, a loading spacer 6 is further provided between the loading jack 3 and the first loading block 4 and the second loading block 5 .

[0029] In a preferred solution, the reaction frame 1 includes a main force frame 9, a connecting cross brace 11 and a fixing groove 10; the conn...

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Abstract

The embodiment of the invention provides a three-dimensional loading device for a tunnel model experiment. The three-dimensional loading device comprises a reaction frame, a loading jack, a first loading block and a second loading block, wherein the first loading block is arranged in the reaction frame; the second loading block is arranged on the first loading block; and the loading jack is arranged between the reaction frame and the first and second loading blocks. Seen from the technical scheme provided by the embodiment of the invention, the stress on the model boundary can be in a three-dimensional state by automatic adaption of the self shape of the loading device and a model, so that the difficulty that the traditional loading device is difficult to realize the real three-dimensional stress at the boundary is overcome, the blank of the field at present is filled and powerful support is provided for researching and designing the tunnel engineering.

Description

technical field [0001] The invention relates to the technical field of rails, in particular to a three-dimensional loading device for tunnel model experiments. Background technique [0002] Indoor similar model test is a common method in the field of tunnel engineering research, and the model test is usually carried out on a model test bench. In order to simulate the deformation and failure of the surrounding rock and lining of the tunnel under load, as well as the interaction relationship between the surrounding rock support, loading is usually required in the test. At present, two-dimensional loading based on the assumption of plane strain is more common, and three-dimensional loading is more common. There are relatively few loading devices, and it is difficult to achieve a true three-dimensional stress state on the model boundary. With the gradual deepening of tunnel professional research and the increasing requirements for engineering refinement design, higher requireme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/00
Inventor 房倩陈立平张顶立应国刚苏洁
Owner BEIJING JIAOTONG UNIV