Anti-earthquake numerical simulation method for interval tunnel

A technology of interval tunneling and numerical simulation, which is applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as inaccessibility, difficulty in determination, messy fitting data, etc., and achieve good applicability

Active Publication Date: 2017-09-01
JINAN RAILWAY TRANSPORT GRP CO LTD
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Problems solved by technology

The disadvantage of the Ramberg-Osgood model is that the physical meaning of the parameters a and r is not clear, and the yield shear stress τ y It is difficult to determine, and because the model independent variable contains shear stress, it is inconvenient in practical application
The advantage of the Davidenkov model is that it can better fit the experiment...

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  • Anti-earthquake numerical simulation method for interval tunnel
  • Anti-earthquake numerical simulation method for interval tunnel
  • Anti-earthquake numerical simulation method for interval tunnel

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[0053]It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0054] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0055] As introduced in the background technology, there are various problems when establishing a three-dimension...

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Abstract

The invention discloses a numerical simulation method for an interval tunnel in a water-rich area. The method mainly comprises the following steps of 1, calculating earthquake waves, building a three-dimensional finite element model of the interval tunnel, and simulating a soil layer by adopting an entity unit; 2, determining earthquake fortification intensity of the interval tunnel, inputting earthquake waves of bedrock, and calculating displacements and internal force responses of a metro tunnel under the action of a design earthquake and a rarely met earthquake; and 3, based on conventional dynamic analysis of a tunnel interval, and by considering the influence of a groundwater seepage effect on the interval tunnel, building a three-dimensional coupling model of water-soil-structure of the metro tunnel, and inputting the earthquake waves to the bedrock of the model in an x direction (a direction perpendicular to the tunnel interval) to obtain displacement and internal force response results of a three-dimensional seepage model.

Description

technical field [0001] The invention discloses an anti-seismic numerical simulation method of an interval tunnel. Background technique [0002] With the continuous expansion of underground space development and underground structure construction, the importance and urgency of seismic design and safety evaluation of underground structures are becoming more and more obvious. However, the seismic response of underground structures has obvious regional characteristics and is significantly affected by site geological conditions and seismic subdivision conditions. However, research on the seismic characteristics of underground structures in water-rich strata is still relatively lacking. Therefore, in order to meet the needs of the development of rail transit, it is necessary to combine the special hydrogeological conditions of the water-rich strata to conduct research on the theoretical analysis and numerical simulation methods of the seismic design of subway tunnels, so as to gui...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/13G06F30/23G06F2119/06
Inventor 商金华徐西永王国波王鑫王晓昱毛荣吉
Owner JINAN RAILWAY TRANSPORT GRP CO LTD
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