盾构下穿运营铁路施工风险模糊综合评价方法研究  

Study on construction risk of shield tunnel under-passing existing railway by fuzzy comprehensive evaluation

作　　者：林大涌 雷明锋[1,2] 曹豪荣 李玉峰 LIN Dayong;LEI Mingfeng;CAO Haorong;LI Yufeng(School of Civil Engineering, Central South University, Changsha 410075, China;Hunan Tieyuan Civil Engineering Testing Co. Ltd., Changsha 410075, China;China Construction Fifth Engineering Division Co. Ltd., Changsha 410004, China)

机构地区：[1]中南大学土木工程学院,湖南长沙410075 [2]湖南铁院土木工程检测有限公司,湖南长沙410075 [3]中国建筑第五工程局有限公司,湖南长沙410004

出　　处：《铁道科学与工程学报》2018年第5期1347-1355,共9页Journal of Railway Science and Engineering

基　　金：国家自然科学基金资助项目(51508575;U1734208);湖南省自然科学基金资助项目(2018JJ3657);中南大学研究生自主探索创新基金资助项目(2017zzts757)

摘　　要：针对盾构隧道下穿运营铁路工程的实际特点,对其施工风险进行有效辨识,从而建立基于层次分析法的风险评价结构模型。针对传统层次分析法的不足,通过引入三角模糊数理论对风险因素权重计算过程进行优化,从定量与定性2方面分别构建相应的隶属度函数,最后通过多级模糊综合运算确定盾构下穿运营铁路施工总体风险水平,并进行实例分析。该评价方法思路清晰,操作简便,能更加真实地反映主观判断的模糊性,对类似工程的安全施工具有指导意义。Considering the actual characteristic of the project about shield tunnel under-passing existing railway, the construction risks were effectively identified and the risk evaluation structure model based on the analytic hierarchy process was established. Further, the triangular fuzzy theory was introduced to optimize the method of calculating the weight of risk factors, and the corresponding membership functions was separately constructed in terms of both quantitative and qualitative respect. At last, the total risk level of the shield tunnel under-passing existing railway is calculated by the multilevel fuzzy comprehensive method, and instance analysis and engineering application were carried out. With its clear theory and simple calculation, this method can be more objectively reflected with the fuzziness of subjective judgement, the result can provide useful guidance to safe construction for similar projects.

关 键 词：盾构 下穿施工 运营铁路 风险评价 模糊综合评价法 三角模糊数 隶属度函数 

分 类 号：TU74[建筑科学—建筑技术科学]