Rail transit solution comparison and selection method based on 3DGIS+BIM technology

Abstract

The present invention discloses a rail transit solution comparison and selection method based on the 3DGIS+BIM technology. The main work comprises: carrying out visual design by using the 3DGIS+BIM technology, constructing a multi-attribute decision-making model, and finally selecting the optimal solution. According to the method disclosed by the present invention, the BIM technology is combined with the 3DGIS technology, the BIM technology has characteristics of fine displaying and rich information, makes up for the deficiencies of the lack of GIS details, and provides useful supplement for the more in-depth application of the GIS technology; necessary information data is extracted from the 3DGIS+BIM model as important parameters of the multi-attribute decision-making model; and the multi-attribute decision-making model is constructed, the decision-making model is based on objective weight design rules, the weight is determined through a certain mathematical method, and compared with the weight obtained by the subjective weight assignment method, the deviation is less, so that the decision-making model can better reflect actual importance of multiple evaluation indicators.

Description

technical field [0001] The invention belongs to the field of rail transit design, in particular to a method for comparing and selecting rail transit schemes based on 3DGIS+BIM technology. Background technique [0002] The scheme comparison and scheme design of an urban rail transit project is a comprehensive work, which has the characteristics of wide coverage, high complexity, and heavy responsibility. Multiple factors such as buildings and ground traffic conditions. Traditional scheme comparison and design methods based on two-dimensional planes are usually difficult to integrate important information such as urban three-dimensional buildings, geology, roads, and pipe networks, resulting in frequent errors in scheme comparison and design deviations. For example, conflicts between new construction projects and existing urban underground pipeline networks, building transportation facilities, etc., and subsequent design changes may lead to a large number of demolition, recon...

AI Technical Summary

Problems solved by technology

Based on the spatial database, the GIS system has a good advantage in displaying large scenes, but there are major deficiencies in the display of details, and it is difficult to provide more powerful guidance for route selection

Images