A Design Method of Digital Flexible Protection System Considering Multiple Nonlinearities

A flexible protection and system design technology, applied in design optimization/simulation, special data processing applications, geometric CAD, etc., to achieve the effect of improving accuracy

Active Publication Date: 2022-01-07
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no digital calculation method that can systematically consider multiple nonlinear factors in this field. Therefore, proposing a high-precision nonlinear numerical calculation method is the key to improving the rationality of the design method and improving the flexible protection technology.

Method used

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  • A Design Method of Digital Flexible Protection System Considering Multiple Nonlinearities
  • A Design Method of Digital Flexible Protection System Considering Multiple Nonlinearities
  • A Design Method of Digital Flexible Protection System Considering Multiple Nonlinearities

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Embodiment 1

[0052] Such as figure 1 As shown, the present embodiment provides a design method for a digital flexible protection system considering multiple nonlinearities, which includes the following steps:

[0053] Step a: Determine disaster parameters. Through digital scanning technology, reconstruct the digital spatial information model of the slope surface, establish a digital slope hazard model in combination with geological survey, and determine the model parameters, including the spatial location of the disaster source, spatial trajectory, impact kinetic energy and disaster-causing range, etc.;

[0054] Step b: Preliminary selection of system type and component specifications. Specifically, according to the disaster model parameters, protection requirements and relevant industry specification requirements, the impact kinetic energy of protection shall be clarified E k , the minimum protective height [ H ], allowable buffer distance [ D ], according to the design method of pa...

Embodiment 2

[0085] This embodiment provides a digital flexible protection system design method that considers multiple nonlinearities, and performs flexible protection design for a rockfall disaster point on a slope. The specific steps are as follows:

[0086] A certain highway is built along a river, and the slope has the risk of rockfall disasters. The lithology is mainly limestone, the structural plane is relatively well developed, and the rock mass is mainly in massive and layered structure. The spatial information model of the slope surface was obtained through digital scanning and digital reconstruction. Combined with geological survey, the vertical height of the disaster source was determined to be about 100m. The discrete element method of setting parallel keys between particles was used to equivalent rockfall. By consulting relevant information, the key parameters were set as follows: , , , . The slope surface is divided into bare rock area and vegetation area. The static ...

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Abstract

The invention relates to the technical field of slope protection for excavation and fill engineering, and relates to a digital flexible protection system design method considering multiple nonlinear factors, which specifically includes the following steps: a) determining disaster parameters; b) initially selecting system types and component specifications; c) Establish calculation model I including digital information of slope surface environment; d) Establish calculation model II including system installation form and initial internal force; e) Establish calculation model III including digital information of hazard-causing bodies; f) Conduct hazard-causing body and Explicit power calculation of the protection system; g) result checking. The invention solves the calculation problem of the complex process of the impact and flexible protection of the slope disaster-causing body in the excavation and filling project, accurately considers multiple nonlinear factors such as large deformation, large slip, contact separation, etc., and significantly improves the excavation and filling project. Accuracy of slope protection design.

Description

technical field [0001] The invention relates to the technical field of excavation and fill engineering slope protection, in particular to a digital flexible protection system design method considering multiple nonlinearities. Background technique [0002] In the field of slope disaster protection in excavation and fill engineering, flexible protection technology has been widely used, but there is no quantitative scientific design method at present. In view of the extremely complicated process of the hazard-causing body impacting the flexible protection system, analytical methods cannot be used for design, so at present, only numerical analysis methods can be used for system structure design. However, the flexible protection system for the impact of disaster-causing bodies is a dynamic shock process with multiple nonlinear problems, including: disaster nonlinearity——slopes have different shapes. , there are also nonlinear disaster-causing bodies such as rock breaking and deb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06F30/13
CPCG06F30/23G06F30/13
Inventor 余志祥骆丽茹张丽君金云涛郭立平廖林旭赵世春
Owner SOUTHWEST JIAOTONG UNIV
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