基于模糊综合评价模型的地铁施工风险评估
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摘要
合肥地铁1号线长距离下穿高架桥,近距离下穿高铁路基和河流,且穿越土层为膨胀土,施工环境十分复杂。鉴于模糊综合评判法的独特优势,通过分析辨识合肥地铁1号线施工典型风险源,建立充分体现上述施工环境特点的风险指标体系,利用修正的模糊层次分析法确定各层指标权重;确立五级风险划分标准;引用一种符合地铁施工风险评估特点的非线性模糊算子,建立修正的模糊综合评价模型,对合肥地铁1号线施工风险进行评估定级。结果表明该评价方法可行,评价结果对合肥地铁施工安全有指导意义,也可为其他类似工程提供借鉴和参考。
The construction surroundings of Hefei Subway Line-1 are quite complex,because of its long-distance traversing under viaducts,close traversing under high-speed rail roadbed and river bed. Through analysis on construction characters of Hefei Subway Line-1,the typical risk sources were identified,the risk evaluation index system revealing the above construction surrounding characters was established. The index weight of each layer was determined by a modified FAHP and a five-class criterion of risk evaluation was established. By citing one kind of nonlinear fuzzy operator,which is suitable for characteristics assessment of subway construction risk,a modified fuzzy comprehensive evaluation model was built,and the Hefei Subway Line-1 construction risks were ranked. The results show that this method is reasonable and feasible. The results are very useful to Hefei subway construction and can provide a reference for similar projects.
The construction surroundings of Hefei Subway Line-1 are quite complex,because of its long-distance traversing under viaducts,close traversing under high-speed rail roadbed and river bed. Through analysis on construction characters of Hefei Subway Line-1,the typical risk sources were identified,the risk evaluation index system revealing the above construction surrounding characters was established. The index weight of each layer was determined by a modified FAHP and a five-class criterion of risk evaluation was established. By citing one kind of nonlinear fuzzy operator,which is suitable for characteristics assessment of subway construction risk,a modified fuzzy comprehensive evaluation model was built,and the Hefei Subway Line-1 construction risks were ranked. The results show that this method is reasonable and feasible. The results are very useful to Hefei subway construction and can provide a reference for similar projects.
引文
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[2]Einstein H H,Chiaverio F K,Ppel U.Risk analysis for the Adler tunnel[J].Tunnels&Tunnelling,1994,26(11):28-30.
[3]黄宏伟.隧道及地下工程建设中的风险管理研究进展[J].地下空间与工程学报,2006,2(1):13-20.(Huang Hongwei.State of the art of the research on risk management in construction of tunnel and underground works[J].Chinese Journal of Underground Space and Engineering,2006,2(1):13-20.(in Chinese))
[4]陈龙,黄宏伟.岩石隧道工程风险浅析[J].岩石力学与工程学报,2005,24(1):110-115.(Chen Long,Huang Hongwei.Risk analysis of rock tunnel engineering[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(1):110-115.(in Chinese))
[5]姚浩,周红波,蔡来炳,等.软土地区土压盾构隧道掘进施工风险模糊评估[J].岩土力学,2007,28(8):1753-1756.(Yao Hao,Zhou Hongbo,Cai Laibing,et al.Fuzzy synthetic evaluation on construction risk of EPBS during tunnelling in soft soil area[J].Rock and Soil Mechanics,2007,28(8):1753-1756.(in Chinese))
[6]王岩,黄宏伟.地铁区间隧道安全评估的层次-模糊综合评判法[J].地下空间,2004,24(3):301-305.(Wang Yan,Huang Hongwei.Hierarchy-fuzzy comprehensive judgment for safety evaluation of metro running tun nel[J].Underground Space,2004,24(3):301-305.(in Chinese))
[7]赵延喜,徐卫亚.基于AHP和模糊综合评判的TBM施工风险评估[J].岩土力学,2009,30(3):793-798.(Zhao Yanxi,Xu Weiya.Risk assessment of TBM construction for tunnels based on AHP and fuzzy synthetic evaluation[J].Rock and Soil Mechanics,2009,30(3):793-798.(in Chinese))
[8]李柏年.模糊数学及其应用[M].合肥:合肥工业大学出版社,2007.(Li Bonian.Fuzzy mathematics and its application[M].Hefei:Hefei University of Technology Press,2007.(in Chinese))
[9]李永,胡向红,乔箭.改进的模糊层次分析法[J].西北大学学报(自然科学版),2005,35(1):11-12.(Li Yong,Hu Xianghong,Qiao Jian.An improved fuzzy AHP method[J].Journal of Northwest University(Natural Science Edition),2005,35(1):11-12.(in Chinese))
[10]苏永华.岩土参数模糊隶属函数的构造方法及应用[J].岩土工程学报,2007,29(12):1772-1779.(Su Yonghua.Constructing method of fuzzy membership function of geotechnical parameters and its application[J].Chinese Journal of Geotechnical Engineering,2007,29(12):1772-1779.(in Chinese))
[11]张晓慧,冯英浚.一种非线性模糊综合评价模型[J].系统工程理论与实践,2005(10):54-59.(Zhang Xiaohui,Feng Yingjun.A nonlinear fuzzy comprehensive assessment model[J].Systems Engineering-Theory&Practice,2005(10):54-59.(in Chinese))
[12]梁吉.基于模糊评判方法的铁路隧道施工风险评价研究[D].杭州:浙江大学,2010.(Liang Ji.Study on railway tunnel construction risk assessment based on fuzzy judgment method[D].Hangzhou:Zhejiang University,2010.(in Chinese))
[13]吕跃进.基于模糊一致矩阵的模糊层次分析法的排序[J].模糊数学与系统,2002,16(2):79-85.(LüYuejin.Weight calculation method of fuzzy analytical hierarchy process[J].Fuzzy Systems and Mathematics,2002,16(2):79-85.(in Chinese))