摘要
匝道型式对枢纽互通式立体交叉乃至道路网整体的通行能力具有较大影响,是评价枢纽立交规划设计方案的关键因素.为选择枢纽立交左转匝道型式,采用层次分析法建立枢纽立交匝道型式评价指标体系,建立枢纽立交匝道选型评价模型,用实例验证其实用性,并进行评价的灵敏度分析,确定评价关键因素,分析评价结果的可靠性.结果表明,枢纽互通式立体交叉宜采用直连和半直连匝道型式,应结合具体工程特色进行选择.层次分析法进行立交匝道的选型评价计算简单,过程清晰,通过灵敏度分析对层次分析法权重进行评估,分析指标灵敏度和权重的关系,使决策更加科学,评价结果更加可靠.
Ramp type has an important influence on the function and efficiency of key interchange and ever the whole network of road, is a key influence factor of comprehensive evaluation of planning schemes of key interchange. For the selection of turning left ramp type of key interchange, this paper adopts an analytic hierarchy process to establish the evaluation index system and model of ramp type of key interchange, and verify its practicability by an example. Besides, a sensitivity analysis of the e- valuation to determine the key factors is conducted to analyze the reliability of the evaluation results. Results show. key interchange should adopt directional ramp and semi-directional ramp and the selec- tion should be combined with the specific engineering characteristics. Analytic hierarchy process is a convenient and effective method to the evaluation and selection of ramp type, with simple calculation and clear process. Using the sensitivity analysis to evaluate the weight of analytic hierarchy process, the relationship between sensitivity and weight is analyzed, which makes the decision more scientific and the evaluation result more reliable.
出处
《武汉理工大学学报（交通科学与工程版）》
2017年第3期434-438,共5页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
基金
国家自然科学基金项目资助(51308429)
关键词
枢纽立交
匝道型式选择
层次分析法
灵敏度分析
key interchange
ramp type selection
analytic hierarchy process
sensitivity analysis
