Hydraulic analogue method of shield tunneling structure model

A structural model and technology of shield tunnels, which are applied in the field of indoor simulation of shield tunnel structures, can solve problems such as restricting the construction and application of underwater shield tunnels, and achieve the effect of ensuring construction and operation safety and strong applicability.

Active Publication Date: 2009-11-18
SOUTHWEST JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no effective method to simulate the water pressure on the tunnel structure model, which restricts the construction and application of underwater shield tunnels

Method used

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  • Hydraulic analogue method of shield tunneling structure model
  • Hydraulic analogue method of shield tunneling structure model
  • Hydraulic analogue method of shield tunneling structure model

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Embodiment

[0021] First of all, it needs to be explained that, for the sake of simplicity and clarity of the diagram, figure 1 , figure 2 Plotted are the cases of uniform loading and non-uniform loading, respectively. In fact, when the present invention is implemented, uniform and non-uniform loading are carried out simultaneously, namely figure 1 , 2 The structural model in is the same model, and all other devices are distributed and set superimposed on the model at the same time. That is, the actual implementation situation should be figure 1 , figure 2 Synthesis.

[0022] A kind of embodiment of the present invention is, a kind of hydraulic pressure simulation method of shield tunnel structure model, and its method is:

[0023] A. Arrange uniform pressure loading device figure 1 As shown, the method of arranging the uniform pressure loading device is: the structural model 1 of the shield tunnel is placed horizontally on the ground, and one end of the eight hoop steel stra...

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Abstract

A water pressure simulation method for a shield tunnel structure model, using more than two hooped steel strands on the outer surface of the horizontally placed structural model to apply uniform radial pressure; at the same time, the tensioned steel strands are attached to On the same semi-arc side of the surface of the structural model, and apply tension to the tension steel hinge from the other side of the surface of the structural model, thereby applying non-uniform radial pressure to the semi-arc side of the structural model; uniform and non-uniform Radial pressure superposition, that is, to simulate the bulb-shaped water pressure that the shield tunnel structure model bears. Then measure the corresponding mechanical parameters of the structural model and send them to the computer for processing. This method realizes the simulation of the bulb-shaped water pressure on the shield tunnel structure model under water, and can realize the mechanical tests of various shield tunnel structure models under different water level conditions, which is helpful for the design of underwater shield tunnel structures. and construction to provide scientific test basis to ensure the safety of tunnel construction and operation.

Description

technical field [0001] The invention relates to an indoor simulation method of a shield tunnel structure, in particular to a water pressure simulation method of a shield tunnel structure model. Background technique [0002] Under the action of external hydrostatic pressure, the underwater shield tunnel structure on the seabed and river bottom is in the shape of a "bulb" with a small top and a large bottom, such as image 3 shown. During the construction and operation period, the water pressure suffered by the tunnel changes greatly. In addition to the current trend of large-scale tunnel sections, the effect of the non-uniform water pressure on the tunnel structure during the construction and operation periods of the underwater shield tunnel cannot be ignored. By simulating the effect and influence of the bulb-shaped water pressure on the tunnel structure, a scientific and reliable test basis can be given for the design and construction of the underwater shield tunnel structu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/00
Inventor 何川封坤晏启祥张志强杨雄何应道
Owner SOUTHWEST JIAOTONG UNIV
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