关键词: 道路工程, 节地效果, 改进熵权法, 多目标综合评价

Abstract: In order to realize the comprehensive evaluation of land economical use in highway design and its multi-objective decision making, a new evaluation method based on the improved entropy method was proposed to realize the optimal decision-making for the highway design. Combining with the characteristics of index, a multi-objective comprehensive evaluation based on the improved entropy-weighted technique for the highway alternative designs was carried out. Firstly, the concept of rational inter-region of index values was introduced; secondly, the normalization function of sample data was designed to achieve the standardization of index; thirdly, combined with the evaluation requirements of land economical use, the entropy-weighted calculation formula was improved according to the shortcomings of traditional entropy-weighted method; furthermore, the expert subjective and objective weighting entropy was combined to implement a comprehensive weighting entropy. Based on the above, a score function based on the membership degree of index was established to achieve the preference decision of expressway design programs, which can range the comprehensive evaluation of alternative schemes by score. In the end, a case study was carried out at a section of Da-Guang expressway, which proved the applicability of the proposed method.

Key words: road engineering, land economical use, improved entropy-weighted technique, multi-objective comprehensive evaluation〖FGN〗