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,"/> 水利工程施工的IT2FS-MARCOS风险评价 水力发电学报
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水力发电学报 ›› 2024, Vol. 43 ›› Issue (7): 109-120.doi: 10.11660/slfdxb.20240710

• • 上一篇    

水利工程施工的IT2FS-MARCOS风险评价

  

  • 出版日期:2024-07-25 发布日期:2024-07-25

IT2FS-MARCOS method for risk assessment of water conservancy engineering construction

  • Online:2024-07-25 Published:2024-07-25

摘要: 为解决专家决策的主观性造成的风险评价不确定性和不同风险参数权重下考虑多种风险因子评价问题,这里提出一种基于IT2FS-MARCOS法的水利工程施工风险评价方法。首先确定水利工程施工风险指标评估体系,运用最优最劣法(BWM)融合基于层间相关性的客观赋权法(CRITIC)的组合赋权法对各风险参数的权重进行分析;然后引入区间2型模糊集(IT2FS)改进多准则决策中的基于折衷方案的备选方案排序法(MARCOS)计算各风险因素的效用函数值,基于效用函数值进行风险因素分析和评价。结合工程实例应用,表明:地质、天气条件和作业计划安排等风险因素危险程度较高,其中地质条件对该施工项目安全威胁最大,为水利工程施工需重点管理的风险因子。该模型的特点是不仅考虑了专家评价的模糊性,而且采用多准则决策方法避免对风险参数简单加权,与优劣解距离法(TOPSIS)相比,本方法与工程实际符合得更好,有望为处理水利工程不确定信息下的风险评价提供一种新的思路。

关键词: 水利工程施工;风险评价;BWM-CRITIC组合赋权法;区间2型模糊集;多准则决策;IT2FS-MARCOS法
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Abstract: How to generate a slip surface is one of the key issues in slope stability analysis, and to construct a slip surface with a complex shape is quite challenging. The curve based on the integral of a Logistic function or other basis functions can take the place of the traditional slip surface generated using non-circular curves, which not only improves the smoothness of the slip surface but reduces its degree of freedom. Slip surface generating methods based on basis functions are sorted out in this paper. They are divided into the superposition method of continuous functions and the integral operation method. The characteristics of the Logistic function and its integral are examined carefully, and the influence of different parameters on the curve shape is obtained to narrow parameter ranges. This provides a basis to reduce the degree of freedom of slip surfaces. And a method is presented to determine the initial parameter values of a given slip surface. The calculations of two slope examples show our method is tolerably good in slope stability analysis.

Key words: hydraulic engineering construction, risk assessment, BWM-CRITIC combination weighting method, interval type-2 fuzzy set, multiple criteria decision making, IT2FS-MARCOS

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