摘要
隧道掘进机(tunnel boring machine,简称TBM)施工风险评价受到众多不确定因素影响,传统的模糊层次分析法(fuzzy analytic hierarchy process,简称FAHP)使用线性算子计算风险等级,易造成某些突出风险因素的影响被弱化,引起最终评价结果的准确性降低。将非线性算子引入到传统FAHP的综合计算中,建立了基于非线性FAHP的TBM施工风险评价新模型。基于作业分解结构法(WBS)和风险分解结构法(RBS),构建了TBM施工风险指标体系;采用层次分析法计算风险评价指标体系中所有风险因素的权重,结合专家评价法得到的隶属度向量构造模糊关系矩阵;引入非线性算子对风险权重和模糊关系矩阵进行综合分析;在此基础上根据最大隶属度原则,得到TBM施工的最终风险等级。将构建的新模型应用到在建深圳地铁羊台山隧道TBM穿越F2-2次生断层施工的风险分析中,得出TBM穿越该断层洞段施工风险等级为4级,属较高风险。基于羊台山隧道工程实例,讨论了新模型和传统FAHP评价方法的区别,进一步验证了新模型的可靠性。
Risk assessment of tunnel boring machine(TBM)construction is affected by many uncertain factors.The traditional fuzzy analytic hierarchy process(FAHP)tends to weaken the influence of some prominent risk factors due to the use of linear operators for calculating risk levels,reducing the accuracy of the final assessment results.This paper introduced a nonlinear operator into the comprehensive calculation of traditional FAHP,and established a new risk assessment model for TBM construction based on the nonlinear FAHP.Based on the work breakdown structure method(WBS)and the risk breakdown structure method(RBS),a risk assessment index system for TBM construction was also established.To calculate the weight of risk factors in the risk assessment index system and to construct the fuzzy relation matrix,analytic hierarchy process(AHP)and the membership vector obtained from the expert evaluation method were adopted.Through introducing the nonlinear operator,the weight of risk factors and fuzzy relation matrix were analyzed,and on this basis the final risk level for TBM construction was obtained based on the principle of the maximum membership degree.The proposed model was successfully applied to the risk assessment of a TBM crossing the F2-2 secondary fault in Yangtaishan Tunnel of Shenzhen metro and the risk level of TBM construction crossing the fault section was determined to be level 4,which was a high risk.Finally,to further verify the reliability of the proposed model,the difference between the new risk assessment model and the traditional FAHP evaluation method was discussed based on the Yangtaishan Tunnel project.
作者
宋战平
郭德赛
徐甜
华伟雄
SONG Zhan-ping;GUO De-sai;XU Tian;HUA Wei-xiong(School of Civil Engineering,Xi’an University of Architecture and Technology,Xi’an,Shaanxi 710055,China;Shaanxi Key Laboratory of Geotechnical and Underground Space Engineering,Xi’an University of Architecture and Technology,Xi’an,Shaanxi 710055,China;China Railway Construction Bridge Engineering Bureau Group Co.,Ltd.,Tianjin 300300,China;China Railway Construction Bridge Engineering Bureau Group No.2 Engineering Co.,Ltd.,Shenzhen,Guangdong 518083,China)
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2021年第5期1424-1433,共10页
Rock and Soil Mechanics
基金
国家自然科学基金资助项目(No.51578447)
陕西省创新能力支撑计划-创新团队(No.2020TD-005)
陕西省住房城乡建设科技计划项目(No.2019-K39)。
关键词
隧道工程
TBM施工
风险评价
非线性
模糊层次分析法
tunnel engineering
TBM construction
risk assessment
nonlinear
fuzzy analytic hierarchy process
