基于BIM的库内深水围堰方案多属性决策方法

Multi-attribute Decision-making Method of Deep-water Cofferdam Schemes in Reservoirs Based on BIM

库内深水围堰建设需考虑对库内水环境的影响,以成本、效益为原则的传统决策方法不适用于库内深水围堰的选型。对此,选取适用于深水围堰的决策指标,构建了以层次分析法(AHP)赋权、熵权法(Entropy Method)修正主观权重、灰色关联分析(GRA)统一方案指标、TOPSIS法排序的E-AW-G-TOPSIS的决策方法,并以T工程为例,建立围堰方案的BIM模型,提取工程量信息,结合E-AW-G-TOPSIS法实现方案比选。结果表明,钢板桩围堰方案更优,反映了钢板桩围堰在库内深水工程建设方面的优势。研究结果可为深水工程方案选择提供思路和参考。

The construction of deep-water cofferdams in reservoirs needs to consider the influences on the water environment, and the traditional decision-making method based on the principles of cost and benefit is not suitable for the selection of deep-water cofferdams in reservoirs. To solve the above problems, the decision indicators suitable for deep-water cofferdams were selected, and a decision-making method—E-AW-G-TOPSIS was proposed, which was weighted by the Analytic Hierarchy Process(AHP), modified subjective weight by entropy method, unified scheme indicators by grey relational analysis(GRA), and ranked by TOPSIS Method. Taking T project as an example, the BIM model of the cofferdam schemes was established, and the quantities information was extracted. Finally, E-AW-G-TOPSIS method was adopted to realize the scheme selection. The results show that the scheme of steel sheet pile cofferdam was better, reflecting the advantages of steel sheet pile cofferdam in the construction of deep-water projects in reservoirs. The research results can provide ideas and references for the selection of deep-water engineering schemes.