【作者】 吴曙光； 刘海波； 刘万鹏；

【Author】 WU Shu-guang;LIU Hai-bo;LIU Wang-peng;College of civil engineering,Chongqing University;Key Laboratory of New Technology for Construction of Cities in Mountain Area(Chongqing University),Ministry of Education;

【机构】 重庆大学土木工程学院； 山地城镇建设与新技术教育部重点实验室(重庆大学)；

【摘要】 随着城市轨道交通与城市建设的发展,导致邻近车站的基坑工程项目增加,轻轨车站必然受邻近基坑开挖而产生一定风险。本文以重庆轻轨六号线大剧院站为例,识别了越洋基坑开挖对轻轨六号线大剧院站产生的风险因素,同时引入信息熵理论,对识别出的各个评价指标的熵值进行计算,再进一步对风险最大指标的二级指标进行评价,从而根据评价结果提出通过"退台分阶支护"方案降低风险的措施。研究表明,采用信息熵理论通过对指标的熵值进行计算,可以对其不确定进行度量,进而判断其风险大小,该评价方法具有良好的应用价值,可提高工程风险管理的效率。更多还原

【Abstract】 With the development of urban rail transport and urban construction,foundation pit that near light rail station are bound to increase,Light rail station must be affected by adjacent excavation and produce a certain risk.This paper firstly takes chongqing light rail line 6 station as an example and identifies the main risk factors in it influenced by the excavation of yueyang foundation.Then introduce the theory of information entropy into risk assessment.With it,calculate the entropy value of all evaluation index identified and evaluate the index whose indicator is largest to give right suggestions based on the assessment results.Researches show that the uncertainty about every risk factors can be measured by calculating index’s entropy value with the theory of information entropy.So the theory could be applied to practical engineering and improve efficiency of engineering risk management.更多还原