摘要
边坡防护方案的确定是公路设计阶段的重要环节,决策结果的客观性、科学性直接影响公路全寿命周期的安全。目前滞洪区高速公路生态边坡方案的决策以定向的经验判断为主,缺乏定量理论评价。为此,基于二元定量比较法、熵权法、灰靶决策理论,构建了一种滞洪区高速公路生态边坡评价决策模型。该模型从经济、技术、社会三方面综合考虑生态边坡方案决策的多种因素,选取11个评价指标构建指标体系;利用熵权法对指标权重进行计算,降低人为主观因素影响,并结合灰靶理论计算各评价方案靶心距,进行优劣排序决策最优方案。最后以津石高速公路生态边坡方案决策为例,对上述方法进行了应用验证。实践结果表明,该评价模型能较为准确的评价滞洪区高速公路生态边坡方案的优劣程度,具有一定的合理性和可行性。
The determination of slope protection scheme is an important link in highway design stage.The objectivity and scientificity of decision-making results directly affect the safety of highway life cycle.At present,the decision-making of ecological slope scheme of expressway in flood detention area is mainly based on the directional empirical judgment,and lacks the quantitative theoretical evaluation.Therefore,based on the binary quantitative comparison method,entropy weight method and grey target decision-making theory,a decision-making model for the ecological slope evaluation of expressway in flood detention area is established.In this model,multiple factors of the decision making for the ecological slope scheme are comprehensively considered from three aspects of economy,technology and society,and 11 evaluation indexes are selected to build the index system.The entropy weight method is used to calculate the index weight to reduce the influence of human subjective factors.Combined with the grey target theory,the target center distance of each evaluation scheme is calculated to make the best scheme.Finally,taking the ecological slope scheme decision-making of Jinshi Expressway as an example,the above method is applied and verified.The practical results show that this evaluation model can accurately evaluate the advantages and disadvantages of ecological slope scheme of expressway in flood detention area,and has a certain rationality and feasibility.
作者
朱晓东
张兴宇
薛丹璇
何佳
ZHU Xiaodong;ZHANG Xingyu;XUE Danxuan;HE Jia
出处
《城市道桥与防洪》
2021年第10期177-180,M0016,共5页
Urban Roads Bridges & Flood Control
关键词
滞洪区高速公路
生态边坡
方案决策
熵权法
灰靶理论
expressway in flood detention area
ecological slope
scheme decision making
entropy weight method
grey target theory
