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Urban rail protection MJS construction method pile intelligent back analysis rapid inversion method and system

A technology of reverse analysis and engineering pile, which is applied in special data processing applications, design optimization/simulation, internal combustion piston engines, etc., and can solve problems that do not have guiding design and construction

Active Publication Date: 2021-09-10
CENT & SOUTHERN CHINA MUNICIPAL ENG DESIGN & RES INST
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Problems solved by technology

[0005] Displacement, as an explicit characteristic of the real rock-soil mass behavior during foundation pit excavation, has good research value, but the parameters obtained by the test can only identify the reinforcement effect of MJS in a certain layer of soil, and do not provide guidance. Significance of design and construction

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  • Urban rail protection MJS construction method pile intelligent back analysis rapid inversion method and system
  • Urban rail protection MJS construction method pile intelligent back analysis rapid inversion method and system
  • Urban rail protection MJS construction method pile intelligent back analysis rapid inversion method and system

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[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0034] During the excavation of the foundation pit, the active earth pressure is also different due to the different soil in the soil layer, and in the excavation process, the rock and soil parameters given by the geological survey are often determined by the urban test and the Combined with local experience, this type of parameters has obvious conservative characteristics.

[0035] In view of the above problems, the present invention proposes to use displacement back analysis as the analysis of the response characteristics of rock and soil mass behavior. During the excavation process of the founda...

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Abstract

The invention provides an urban rail protection MJS construction method pile intelligent back analysis rapid inversion method and system. The method comprises the steps: firstly, establishing back analysis system software with a swarm intelligence optimization algorithm alpha-PSO as the core through finite difference analysis software; then giving a basic parameter value range of back analysis system software according to geological exploration initial parameters; continuously optimizing and updating the monitoring data through a back analysis system, continuously calculating to obtain rock-soil body parameters according to the optimized and updated monitoring data, and continuously iterating the rock-soil body parameters to obtain rock-soil body back analysis parameters; and finally, calculating the deformation displacement of the foundation pit and the urban rail according to the rock-soil body back analysis parameters. The inverse analysis parameters obtained through swarm intelligence optimization algorithm alpha-PSO optimization can reflect complex geological conditions in the rock-soil body better, can participate in finite difference calculation to simulate next excavation of the foundation pit, obtain rock-soil body parameters, predict possible risks and avoid construction accidents.

Description

technical field [0001] The invention relates to the technical field of railway tunnel construction, in particular to an intelligent back analysis and fast inversion method and system for urban rail protection MJS construction method piles. Background technique [0002] MJS is a short-distance subway rail transit construction protection isolation construction method pile. It has the characteristics of small disturbance to the surrounding environment, high reinforcement soil strength, and good isolation effect. It is widely used in short-distance urban rail construction protection. [0003] The MJS construction method is based on the traditional high-pressure jet grouting process, and uses a unique porous pipe and front-end forming device to realize the forced grouting in the hole and the monitoring of the internal pressure in the hole, and control the internal pressure by adjusting the amount of forced grouting. The impact on the environment is significantly reduced, and the ...

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Application Information

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IPC IPC(8): G06F30/23G06F30/25
CPCG06F30/23G06F30/25Y02T10/40
Inventor 刘华张庆赵强政何小龙王庆邹琦郑博吕东阳武守相
Owner CENT & SOUTHERN CHINA MUNICIPAL ENG DESIGN & RES INST
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