Design method of three-dimensional elastic model of suspended tunnel and three-dimensional elastic model

A floating tunnel and elastic model technology, which is applied in the design field of three-dimensional elastic models and three-dimensional elastic models of floating tunnels, can solve problems such as the inability to obtain the real physical response laws of floating tunnels

Active Publication Date: 2020-01-17
CHINA COMMUNICATIONS CONSTRUCTION +1
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Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiency in the prior art that there is no three-dimensional physical model test conception of the floating tunnel, so that the real physical response law of the floating tunnel cannot be obtained more accurately,...

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  • Design method of three-dimensional elastic model of suspended tunnel and three-dimensional elastic model
  • Design method of three-dimensional elastic model of suspended tunnel and three-dimensional elastic model
  • Design method of three-dimensional elastic model of suspended tunnel and three-dimensional elastic model

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Embodiment 1

[0085] see Figure 1-Figure 9 , the embodiment of the present invention provides a three-dimensional elastic model of the floating tunnel, the three-dimensional elastic model of the floating tunnel is geometrically similar to the prototype, the ratio of the total gravity satisfies the Froude similarity criterion and the ratio of the bending stiffness meets the elastic similarity. The prototype described in this embodiment refers to: during the experiment, considering the material and design size of the floating tunnel that may be used in the actual project, as well as the simulation ability of the experimental environment, the material and size of the floating tunnel used for simulation in this experiment are selected . The three-dimensional elastic model of the floating tunnel in this embodiment is designed through the following steps:

[0086] S1. Determine the size scale ratio λ and the size, gravity and bending stiffness parameters of the prototype of the three-dimensiona...

Embodiment 2

[0150] see Figure 10-Figure 12 , the present embodiment provides a three-dimensional elastic model of a floating tunnel, its design method and structure are basically the same as those of the three-dimensional elastic model of the floating tunnel in Embodiment 1, and the structural difference is that in this embodiment, the counterweight 21 structure is different.

[0151] In this embodiment, the counterweight 21 adopts a block structure. In order to adapt to the structure of the counterweight 21, the third structural member 3 is no longer divided into a large-diameter block and a small-diameter block, but the third structural member is set as an integral structure, and then opened on the third structural member 3 Groove, the size of the groove is adapted to the size of the counterweight 21. Further, the grooves are uniformly distributed in the axial direction of the model, and the grooves are also uniformly distributed in the circumferential direction of the model.

[015...

Embodiment 3

[0156] see Figure 13 and Figure 14 , the embodiment of the present invention provides a three-dimensional elastic model of a floating tunnel, its design method and structure are basically the same as those in Embodiment 2, the difference in its structure is: in this embodiment, the pipe section 11 is set as a hollow tubular structure, That is: the cross section of the pipe section 11 is annular.

[0157] In the three-dimensional elastic model of the floating tunnel provided in this embodiment, the cross-section of the pipe section 11 is also obtained by calculating the bending stiffness. On the basis of obtaining the cross-sectional area of ​​the pipe section 11 and the design length of the prototype, the first structural member can be obtained 1, so that according to the gravity of the first structural member 1 and the requirement of Floyd’s criterion, the gravity to be provided by the second structural member 2 is obtained, that is, the total gravity of the counterweight ...

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Abstract

The invention relates to the field of suspended tunnel physical model tests, in particular to a design method of a three-dimensional elastic model of a suspended tunnel, the three-dimensional elasticmodel and a design method of the suspended tunnel. According to the design method of the three-dimensional elastic model, under the conditions that strict elasticity similarity is difficult to realizeand the suspended tunnel mainly pays attention to deflection change, the flexural rigidity similarity of the model and the prototype is considered, and the problem of elasticity similarity of the model is processed through the flexural rigidity similarity, so that the three-dimensional elastic model capable of reflecting the real response law of the suspended tunnel can be obtained, and the design method is low in design and manufacturing difficulty. By means of the design method, the three-dimensional elastic model of the suspended tunnel can be obtained and can be used for guiding design ofthe suspended tunnel.

Description

technical field [0001] The invention relates to the field of designing floating tunnel physical model tests, in particular to a design method for a three-dimensional elastic model of a floating tunnel and a three-dimensional elastic model. Background technique [0002] At present, research on floating tunnels at home and abroad is limited to mathematical prediction models and two-dimensional tank tests. These studies cannot fully obtain the real physical response laws of floating tunnels. It is extremely necessary and meaningful to carry out three-dimensional physical model tests related to floating tunnels. Previously, there was no conception of 3D physical model testing of floating tunnels, and the production of 3D elastic models was even blank. Establishing an accurate and reliable 3D elastic model is the basic condition for carrying out 3D physical model testing of floating tunnels, while previous related research is almost zero. Contents of the invention [0003] The ...

Claims

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Application Information

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IPC IPC(8): G06T17/10G06F30/13G06F30/20
CPCG06T17/10Y02T90/00
Inventor 林巍周卓炜张宁川顾倩王冠男潘文博
Owner CHINA COMMUNICATIONS CONSTRUCTION
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