基于熵权-TOPSIS的高原高速公路路段安全评价研究
Study on Safety Evaluation of Plateau Expressway Sections Based on Entropy Weight-TOPSIS Method
针对高原特殊环境下高速公路的安全评价需求,构建道路线形、路面状况、道路安全设施、交通环境和管理服务5个一级指标、17个二级指标的安全评价体系,以西藏拉林高速公路18处典型路段为研究对象,运用熵权-TOPSIS法客观量化指标权重并计算路段与理想解的贴近度,实现道路安全等级的划分。结果显示:路段7和路段11评为Ⅱ级,路段14评为Ⅳ级,其余15个路段为Ⅲ级,与拉林高速公路各路段的实际情况一致。该方法可以克服传统方法的主观偏差与地理适应性不足的问题,为高原地区高速公路风险识别、养护决策及安全治理提供科学依据,具有一定的理论意义与工程实践价值。
To address the safety evaluation needs of expressways in plateau-specific environments, a safety evaluation system comprising five primary indicators—road alignment, pavement condition, road safety facilities, traffic environment, and management services—and 17 secondary indicators was established. Taking 18 typical sections of the Lhasa-Nyingchi Expressway in Xizang as the research subject, the entropy weight-TOPSIS method was applied to objectively quantify indicator weights and calculate the proximity of each section to the ideal solution, thereby achieving the classification of road safety levels. Based on the results,Section 7 and Section 11 were rated as Level II, Section 14 was rated as Level IV, and the remaining 15 sections were rated as Level III, which is consistent with the actual conditions of corresponding sections on the Lhasa-Nyingchi Expressway. This method can overcome the subjective bias and geographical adaptability limitations of traditional approaches, providing a scientific basis for risk identification, maintenance decision-making, and safety management of expressways in plateau regions. It possesses certain theoretical significance and practical engineering value.
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西藏自治区自然科学基金面上项目(XZ202501ZR0051)
西藏大学高层次人才项目(xzdxdr202401)
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