摘要
为准确评价地铁盾构隧道管片安全性,基于对地铁盾构隧道管片结构病害的形成机制分析,从管片变形、渗漏水、裂缝、拱顶脱落、材料劣化5个方面建立评价指标体系,划分管片结构安全状态评价等级,构建未确知测度函数,通过基于熵值改进的G2法确定权重,根据置信度识别准则判断风险等级,并将模型应用于某地铁盾构隧道,对其管片结构进行安全状态评价。研究结果表明:采用未确知测度理论能够准确评价隧道管片的安全等级,结果准确,实用性强。
In view of an accurate evaluation of the security status of metro shield tunnel segments,based on the analysis of the formation mechanism of structural defects in metro shield tunnel segments,an evaluation index system is established from five aspects:segment deformation,water leakage,cracks,arch detachment,and material degradation,followed by a division of the security status evaluation level of the segment structure,as well as a construction of an unknown measurement function,with the weight determined by the G2 method based on entropy improvement,and the risk level determined based on the confidence recognition criterion.The model is applied to a metro shield tunnel in Hangzhou to evaluate the security status of its segment structure.The research results indicate that the application of uncertainty measurement theory can accurately evaluate the security level of tunnel segments,with accurate results and strong practicality.
作者
张勇
付山贤
ZHANG Yong;FU Shanxian(School of Management,Xi’an University of Architecture and Technology,Xi’an 710054,China)
出处
《湖南工业大学学报》
2024年第5期1-9,共9页
Journal of Hunan University of Technology
关键词
盾构隧道
管片
G2法
未确知测度理论
shield tunnel
pipe segment
G2 method
uncertainty measurement theory
