Road surface condition evaluation model optimization method

Abstract

A road surface condition evaluation model optimization method comprises the following steps: establishing a road surface condition evaluation model; performing multiple rounds of investigation on the weight of each level of evaluation index in the form of an expert investigation table by using a subjective Delphi method; collecting, counting and summarizing survey results of each level of evaluation index weight by using an objective grey correlation degree to form a subjective evaluation data sequence matrix, and screening out a reference data sequence matrix from the subjective evaluation data sequence matrix according to an evaluation purpose; obtaining a correlation coefficient and a correlation degree between the subjective evaluation data sequence matrix and the reference data sequence matrix; and calculating the correction weight of each level of evaluation index through the correlation degree, and optimizing the pavement condition evaluation model according to the correction weight of each level of evaluation index. By optimizing the pavement condition evaluation model, the defect of evaluation result deviation caused by constant value index weight in the current pavement comprehensive performance evaluation process is overcome, and the reliability and accuracy of the pavement condition comprehensive evaluation result are improved.

Description

technical field [0001] The invention relates to the field of road engineering, in particular to a method for optimizing a road condition evaluation model. Background technique [0002] Transportation plays an important role in the sustainable development of a country, and the application of scientific methods and innovations in road construction management is conducive to resource conservation and sustainable development. At present, national highway management departments mainly rely on the evaluation of pavement technical conditions to understand the actual situation of pavement, but the pavement technical evaluation index is only a single evaluation of roads according to the current road technical condition evaluation standards, and does not fully consider the comprehensive condition evaluation of pavement. Factors, multi-level, systems engineering with conforming uncertainties. Moreover, the current standards have fixed values ​​for the weights, which are difficult to r...

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Problems solved by technology

At present, national highway management departments mainly rely on the evaluation of pavement technical conditions to understand the actual situation of pavement, but the pavement technical evaluation index is only a single evaluation of roads according to the current road technical condition evaluation standards, and does not fully consider the comprehensive condition evaluation of pavement. Factorial, multilevel, systems engineering with conforming uncertainties

Moreover, the current standards for the weights are all fixed values, which are difficult to reflect the main road surface disease characteristics and technical evaluation characteristics corresponding to different regions and different road grades in my country, which leads to the unreliability of the comprehensive evaluation results of road conditions

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