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Lining model used for shield tunnel longitudinal model test and manufacturing method thereof

A technology of shield tunneling and model testing, which is applied to the testing of machines/structural components, measuring devices, instruments, etc., can solve problems such as large differences, and achieve the effect of improving reliability, good mechanical behavior and deformation law

Pending Publication Date: 2018-11-09
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology

This test model only achieves similarity in longitudinal stiffness, ignoring the influence of longitudinal joints on the mechanical properties of the segment lining structure, and the structural internal force and longitudinal uneven settlement obtained by the model test are quite different from the actual

Method used

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  • Lining model used for shield tunnel longitudinal model test and manufacturing method thereof
  • Lining model used for shield tunnel longitudinal model test and manufacturing method thereof
  • Lining model used for shield tunnel longitudinal model test and manufacturing method thereof

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Embodiment Construction

[0048] The present invention will be further described below in conjunction with accompanying drawing:

[0049] Such as figure 1 As shown in , it is a schematic diagram of the staggered splicing structure of the segmental lining model.

[0050] The present invention provides a segment lining model for the longitudinal model test of shield tunnel, which comprises a plurality of segment rings 1 spliced ​​with each other, and cut grooves 2 are opened on the sides of the segment rings 1, such as figure 2 As shown, the cutting grooves 2 are respectively opened on the inner side wall and the outer side wall of the segment ring 1, and the positions of the cutting grooves 2 correspond to the positions of the transverse joints on the original lining segment structure.

[0051] A longitudinal joint piece 3 is evenly glued on the outer wall of the adjacent segment ring 1, such as image 3 As shown, the longitudinal joint 3 is I-shaped, and the flanges 31 at both ends of the longitudin...

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Abstract

The invention discloses a lining model used for a shield tunnel longitudinal model test and a manufacturing method thereof. The segmental lining model comprises cutting slots and longitudinal connector sheets. The manufacturing method comprises the steps that the model parameters are calculated by drawing up the similarity ratio, trial manufacturing is performed and whether the mechanical parameters meet the requirements is tested, and then pouring of the segmental lining model is performed and splicing is performed. The shield tunnel segmental lining structure stiffness is ensured to be consistent with that of the prototype tunnel structure, and the local stress state of the segmental lining longitudinal connectors can also be reflected so as to have high popularization value.

Description

technical field [0001] The invention relates to the technical field of tunnel construction in urban subway sections, in particular to a lining model and a manufacturing method for longitudinal model tests of shield tunnels. Background technique [0002] In recent years, shield tunnels have been widely used in the construction of urban rail transit and cross-river and sea-crossing tunnels. The unfavorable loads in the service process are becoming more and more complex, leading to the prominent longitudinal mechanical problems of tunnel structures, which have attracted extensive attention. [0003] In order to obtain the longitudinal mechanical properties of the segment lining structure of the shield tunnel and the uneven settlement of the tunnel as a whole, it is necessary to carry out in-depth research with the help of model tests. Due to the complexity of the segmental lining structure, most of the existing test models have simplified the prototype structure to a certain e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M99/00
CPCG01M99/00
Inventor 王士民蹇蕴奇鲁茜茜申兴柱王帆阮雷
Owner SOUTHWEST JIAOTONG UNIV
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