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Gas pipe shallow safeguard structure design and safeguard effect test and analysis method

A technology for gas pipelines and protective structures, applied in the directions of measuring force, measuring devices, special data processing applications, etc., can solve the problems of lack of quantitative standards, low safety of buried gas pipelines, and emptying of construction resources, etc. The effect of over-protection and avoiding under-protection

Active Publication Date: 2011-06-22
SHANGHAI MUNICIPAL GAS NO2 PIPELINES ENGINEERING CO LTD
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AI Technical Summary

Problems solved by technology

[0010] However, when the laying of gas pipelines fails to meet the burial depth requirements in the code, the above-mentioned "safety protection measures" are implemented based on experience and lack quantitative standards
[0011] Due to the absence of precise analysis and calculation methods, it is difficult to quantify the safety protection effect of shallow buried gas pipelines. Therefore, the safety protection construction is either too high to cause "over-protection", resulting in the emptying of construction resources; or the standard is too low to cause "under-protection". ", resulting in poor protection, and the safety of buried gas pipelines is too low

Method used

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  • Gas pipe shallow safeguard structure design and safeguard effect test and analysis method
  • Gas pipe shallow safeguard structure design and safeguard effect test and analysis method

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Embodiment Construction

[0022] combine figure 1 As shown, the present invention provides a gas pipeline shallow buried protection structure design and protection effect test and analysis method, at least including the following steps:

[0023] Step 1: Establish a shallow-buried protective structure model of the gas pipeline, calculate the force of the shallow-buried protective structure model according to the finite element analysis method, and obtain theoretical force data of the gas pipeline in the shallow-buried protective structure model.

[0024] The basic idea of ​​the above-mentioned finite element analysis method is to use the concept of discretization to divide the elastic continuum into a limited number of units, and consider that adjacent units are only connected at nodes, and the interaction force between units is only transmitted by nodes. The strains and stresses in the element are represented by element nodal displacements.

[0025] The general steps of finite element analysis are: st...

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Abstract

The invention discloses a gas pipe shallow safeguard structure design and a safeguard effect test and analysis method, at least comprising the following steps: 1. establishing a gas pipe shallow safeguard structure model, calculating stress condition of the shallow safeguard structure model according to the finite element analysis method to obtain theoretic stress data; 2. adopting a gas pipe shallow safeguard construction effect rest system to obtain test stress data; 3. comparing the test stress data with the theoretic stress data to verify and optimize the finite element analysis method; 4. designing a gas pipe shallow safeguard analysis software according to the finite element analysis method, establishing correlations of parameters in different operating modes by the gas pipe shallowsafeguard analysis software according to finite times of analog computation. The method of the invention optimizes the gas pipe shallow safeguard structure design and quantizes the safeguard effect.

Description

technical field [0001] The invention relates to the construction technology of the gas pipeline, in particular to a method for the design of the shallow buried protection structure of the gas pipeline and the test and analysis method of the protection effect. Background technique [0002] With the development of urban construction and the increase of population density, the problem of safe operation of urban gas transmission and distribution pipeline network has become increasingly prominent. There are many factors that affect the safety of urban gas transmission and distribution pipeline network. [0003] In order to reduce possible damage to buried gas pipelines, according to different road conditions, Article 6.3.4 of the existing "Code for Urban Gas Design" (GB50028-2006) stipulates that underground gas pipelines (with a pressure not greater than 1.6MPa) should be buried The minimum covering soil thickness (from road surface to pipe top) shall meet the following requirem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/22G06F17/50
Inventor 陶志钧周伟国何建春
Owner SHANGHAI MUNICIPAL GAS NO2 PIPELINES ENGINEERING CO LTD
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