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Finite element refinement simulation method for pipe jacking construction of pipe gallery structure

A simulation method and finite element technology, applied in the field of fine finite element simulation, numerical simulation, and pipe jacking construction of pipe gallery structure, can solve the problem that it cannot reflect the real state of pipe jacking of pipe gallery, the result has no reference value, and cannot guide the actual project and other problems, to achieve the effect of fine simulation, high versatility, and cost saving

Pending Publication Date: 2019-09-17
CHINA RAILWAY SEVENTH GRP CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method does not take into account the impact of shield machine tunneling pressure, jack force, and grouting, and the simulation method is too rough to reflect the real state of the pipe jacking construction of the pipe gallery. The calculated results have no reference value and cannot guide the actual construction of the project.

Method used

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  • Finite element refinement simulation method for pipe jacking construction of pipe gallery structure
  • Finite element refinement simulation method for pipe jacking construction of pipe gallery structure
  • Finite element refinement simulation method for pipe jacking construction of pipe gallery structure

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Embodiment

[0078] The present invention is further introduced below in conjunction with the actual engineering of the Wuhan Heping Avenue Viaduct that pushes down through the top of the comprehensive pipe gallery of the Wuhan-Nine Lines Line. The dimensions of the project example model plan and section schematic diagrams are as follows: figure 2 As shown in Figure 3, this section is a single cabin pipe gallery structure with a length of 9.8m, a height of 5.2m, a plate thickness of 0.7m, and a width of each section of 2m; the buried depth of the top of the pipe gallery structure is 6.87m, The net distance from the pile foundation of the adjacent viaduct is 3.46m, and the MJS rotary grouting piles with a length of 15m, a height of 15m and a thickness of 1.4m are installed between the pipe gallery structure and the existing bridge piles, and the net distance from the pipe gallery structure is only 0.4 m.

[0079] ① Firstly, according to the thickness of the shield shell steel plate, ...

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Abstract

The invention discloses a finite element refinement simulation method for pipe jacking construction of a pipe gallery structure, which adopts a finite element method to simulate the pipe jacking construction process of the pipe gallery structure and comprises the following steps: determining relevant parameters of a grouting equivalent layer; determining a load and construction parameters of pipe jacking construction of the pipe gallery structure; determining a constitutive model and a constitutive unit adopted by each part when the pipe gallery structure is subjected to pushing simulation; determining the setting of a load step; and establishing a three-dimensional finite element model, and performing finite element analysis and calculation. According to the method, the influences of factors such as tunneling pressure, jack force and grouting are comprehensively considered, so that the finite element simulation process is close to the actual pipe gallery pipe jacking construction process to the maximum extent, and a simulation result with engineering guiding significance is obtained.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, relates to numerical simulation technology, in particular to a finite element refinement simulation method for pipe jacking construction of a pipe gallery structure. Background technique [0002] In today's society, maintenance and inspection of water supply and drainage, electricity and gas pipelines are very common, resulting in repeated excavation and backfill construction of urban roads, causing great inconvenience to people's lives; in order to completely solve this problem, improve residents' travel conditions and living environment , to provide a reliable underground space for the construction of municipal pipelines in an intensive manner, and the pipeline gallery structure came into being. [0003] The construction of comprehensive pipe corridors abroad began in Europe in the 19th century, and Europe is also a relatively developed region in the world for the development and util...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/23G06F30/17G06F2113/14G06F2119/06
Inventor 高增奎梅军王先甲胡家新马亚东李定勇熊星欣官天培王丹生
Owner CHINA RAILWAY SEVENTH GRP CO LTD
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