Selection method of three-dimensional guiding line for highway in permafrost region

Abstract

The invention relates to a three-dimensional guiding line selection method for a road in a permafrost region and aims to solve the problem that for the complicated geographical and geological environment of the permafrost region, multi-aspect requirements cannot be met due to the fact that early evolution of an existing genetic algorithm is prone to prematurity and late evolution speed is low. The method comprises steps as follows: geological disaster feature attributes of the permafrost region are screened on a GIS (geographic information system) platform, and a risk factor model is established; the geological disaster attribute information is converged, an Oracle database is connected through ArcSDE, and a geographical information database is established; a road route plane model is established, line optimization is performed with an improved genetic algorithm, and a final guiding line design scheme for the road in the permafrost region is obtained through repeated iterative optimization with the total risk factor not higher than 4.00 as a constraint condition. With the adoption of the method, the problem about the road guiding line selection in the complicated geographical environment of the permafrost region is solved, the design workload of a designer is reduced through comprehensive risk factor evaluation, and meanwhile, the design quality is improved.

Description

technical field [0001] The invention belongs to the technical field of road traffic construction, and in particular relates to a method for selecting a three-dimensional guiding line of a highway in a permafrost region. Background technique [0002] The location selection of highways in the permafrost region of the Qinghai-Tibet Plateau is a systematic project, and the impact of thick-layer underground ice, thermally thawed lakes and ponds, permafrost swamps and other diseases on roads must be fully considered during the design process. Part of the influencing factors restrict each other, how to deal with the requirements of different fields, and get the best highway route design scheme is an important topic for designers today. The current method used in general low-altitude areas is based on the experience and trial-and-error method of designers’ work experience and expert deliberation, which is not only time-consuming, but also easy to miss excellent solutions. It is mor...

AI Technical Summary

Problems solved by technology

However, the current genetic algorithm has the disadvantages of premature evolution in the early stage and slow evolution in the later stage, and in the face of the complex geographical and geological environment in permafrost regions, the existing technology does not provide a road alignment that can take into account various requirements. Method of choosing

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