摘要
为了研究对盾构掘进安全稳定性评价过程中各评价指标间的模糊性、随机性和各个指标的权重问题,选取地面沉降、建筑物沉降、河堤沉降、管线沉降以及管片沉降等监测数据作为评价指标,采用博弈论、层次分析法和熵值赋权法进行了组合赋权,通过可拓云模型计算评价指标的期望、熵和超熵,运用Matlab计算并绘制了各评价指标的云滴图。最后,将博弈论赋权结果与可拓云模型计算结果相结合,构建了盾构掘进安全可拓云综合评价模型,对实际工程案例中19组监测数据进行了安全稳定性评价,并与模糊综合评价结果进行了对比。结果表明:案例中盾构隧道区间安全稳定性评价指标的重要性排序依次为建筑物沉降、管片沉降、地面沉降、管线沉降和河堤沉降;综合评价结果为8个Ⅲ级,4个Ⅱ级,7个Ⅰ级,其中,对于Ⅱ级和Ⅰ级数据组附近需采取相应的预防措施;评价模型能够反映各指标之间的不确定性关系,避免了单一赋权的片面性,相较于模糊综合评判其计算结果更符合客观实际情况。综合上述研究提出了一种基于博弈论理论与可拓云模型相结合的综合评价方法,为盾构施工安全评价提供了新的方法和思路。
In order to study the fuzziness,randomness and weight issues among various evaluation indicators in the safety stability evaluation of shield tunneling,monitoring data such as ground settlement,building settlement,river embankment settlement,pipeline settlement and pipe segment settlement are selected as evaluation indicators.The game theory,analytic hierarchy process and entropy weighting are adopted to obtain the combined weighting,the expected value,entropy and hyper entropy of the evaluation indicators are calculated by the extension cloud model,and Matlab is used to calculate and draw cloud drop plots for each evaluation indicator.Finally,the weighting results of game theory are combined with the calculation results of the extension cloud model to construct a comprehensive evaluation model for safety of shield tunneling.There are 19 sets of monitoring data in actual engineering cases evaluated for safety and stability,and compared with the fuzzy comprehensive evaluation results.The result shows that(1)according to the combined weight results obtained by the game theory,analytic hierarchy process and entropy weighting method,the safety and stability evaluation indicators of the shield tunnel interval in this case are building settlement,segment deformation,ground settlement,pipeline settlement and embankment settlement in order of importance;(2)the safety stability of the 19 monitoring groups are evaluated by using the comprehensive extension cloud model,including 8 Level Ⅲ,4 Level Ⅱ and 7 Level Ⅰ,among which Level Ⅱ and Ⅰ nearby are needed to adopt corresponding prevention measures;(3)the comprehensive evaluation model built in this study based on game theory and extension cloud can reflect the uncertain relationship among various indicators,avoiding the one-sidedness of single weighting,compared with the fuzzy comprehensive evaluation,and the calculation results are more in line with the objective reality.Based on the study,a comprehensive evaluation method based on the combination of game theory and extension cloud model is proposed,which provides a new method and idea for shield construction safety evaluation.
作者
王伟
王兴
刘丹娜
周勋
WANG Wei;WANG Xing;LIU Dan-na;ZHOU Xun(School of Civil Engineering,Changchun Institute of Technology,Changchun,Jilin 130021,China;China Road and Bridge International Co.,Ltd.,Beijing 100024,China;China Communication Road and Bridge North Engineering Co.,Ltd.,Beijing 100024,China)
出处
《公路交通科技》
CAS
CSCD
北大核心
2024年第2期148-157,共10页
Journal of Highway and Transportation Research and Development
基金
吉林省科技发展计划项目(20220203058SF)
中交路桥建设有限公司科技研发项目(ZJLJ-2018-44)。
关键词
隧道工程
稳定性评价
博弈论
可拓云模型
盾构掘进
砂卵石地层
tunnel engineering
stability assessment
game theory
extension cloud model
shield tunneling
stratum of sandy pebble