基于灰色关联模型的改进型层次分析法与基坑风险评价

为了克服层次分析法两两比较过程烦琐和风险因素较多时不易满足一致性的局限性,引入灰色关联模型对其进行融合改进,创造性地摒弃了两两比较的过程,利用关联分析建立了基于灰色关联模型的改进型层次分析法,不仅克服了层次分析法的固有局限性,还增强了层次分析法的适用性.针对廊坊市苏宁广场基坑工程,利用改进型层次分析法构建了综合评价体系,通过组合权重值对基坑开挖的风险进行了评价,确定了基坑施工过程中的风险等级,为工程的顺利施工提供了技术指导.

Improved Analytic Hierarchy Process Based on Gray Correlation Model and Its Application in Pit Engineering

Analytic hierarchy process ( AHP) has some obviously limitations because pairwise comparison process is complicated and meets the consistency hard with the increasing in the number of factors, which weaken the applicability of AHP a lot. In order to overcome these limitations, authors introduced gray correlation model and combined the two methods with scales of transformation conversion of gray correlation coefficient matrix and abandoning pairwise comparison, then proposed an improved analytic hierarchy process ( IAHP) . The proposed IAHP overcomes the shortcomings of AHP and increases the applicability of AHP. Based on the IAHP, a comprehensive evaluation system for Langfang Suning plaza foundation engineering was set up, and the risks of the excavation process were assessed. Finally, extreme high degree risks were determined via quantities of the combination weight, which will provide technical guidance for engineering construction smoothly.