Evaluation of Expressway Asphalt Pavement Performance Based on the Fuzzy Theory

Abstract

Abstract:To more scientific evaluation of asphalt pavement performance, provide maintenance decision objective, accurate and comprehensive data, based on the fuzzy comprehensive evaluation method evaluation, this paper constructs the high grade highway asphalt pavement performance evaluation model. This paper is from four indicators of the pavement condition index, the structure strength index, driving quality index and lateral force coefficient to build the evaluation system, then establishes membership function and calculates the weight , then performance level is calculated by the maximum membership degree comprehensive evaluation method, finally through the actual case evaluation, the results show that the model can effectively solve the problem of high grade highway asphalt pavement performance evaluation. Asphalt Pavement Performance EvaluationStructural damage, the strength of structure, road surface roughness and surface sliding resistance is common asphalt pavement performance evaluation indicators   1 , pavement condition index PCI , the structure strength index SSI , driving quality index RQI and lateral force coefficient SFC ( BPN ) constitutes the pavement performance evaluation system   23  , and the comprehensive evaluation index PQI . At present, for the evaluation of comprehensive performance of asphalt pavement, the specification of highway asphalt pavement maintenance technology (JTJ 073.2-2001) and "highway technical condition evaluation criteria" (JTG H20-2007) are all adopted the method of weighted arithmetic mean to solve the PQI . After many years of practice, the author found the method although calculation form simple, the result directly, can reflect the status of the road of technology state, however, the method can't be more really close to the objectively true state of road. So we introduce the fuzzy membership degree evaluation method, in order to make the evaluation results more objective, more realistic, more can reflect the general development level of the road. 1.1 Evaluation Index. For the calculation of the pavement performance index (coefficient), in order to facilitate comparative analysis, we can be summarized as shown in table 1.

Optimal Decision Making for Polymer-Modified Bitumen Mixture Based on Fuzzy Comprehensive Evaluation

“…Liu et al [43] established a fuzzy comprehensive evaluation model to decide on preventive maintenance of bitumen pavements. Zhao et al [44] built a high-grade highway bitumen pavement performance evaluation model based on the fuzzy comprehensive evaluation method and calculated the performance level through the maximum degree of membership. However, the traditional fuzzy comprehensive evaluation uses expert scores to assign weights.…”