地铁隧道施工安全风险评估及其应用研究
发布时间：2018-11-09 15:55
【摘要】：地铁建设一般位于城市的中心,施工环境复杂多变、规模大、工期长、隐蔽性强、参与主体多,这势必造成工程在施工期内的风险数量多、种类复杂,施工各个环节存在较大的不确定性和安全风险。因此,开展地铁隧道施工安全风险评估研究工作具有重要的现实意义。本文综合运用文献研究、现场调研、专家问卷调查、统计分析和模糊数学理论等手段,在独立研究和归纳总结的基础上,开展了地铁隧道施工安全风险评估研究工作。并以成都地铁五号线一期工程为依托,进行地铁隧道施工安全风险评估应用。论文主要工作和成果如下:(1)建立地铁施工事故数据库。统计分析了国内192起隧道施工典型事故,对事故进行分类并分析典型事故的影响因素;结合已有研究成果、工程现场调查和资料查询,建立明挖法、盾构法、矿山法等3种施工方法的专项风险评估指标体系。(2)运用BP人工神经网络算法,结合模糊数学理论,以风险因素作为神经网络的输入层内容,风险事件的概率和损失作为神经网络的输出层内容,分别建立明挖法、盾构法、矿山法等3种施工方法的风险评估数学模型。(3)参考地铁隧道施工风险评估相关规范,确定地铁隧道施工风险的评估标准;为方便BP神经网络对风险可能性等级和风险损失等级的估算,基于模糊数学理论,结合地铁施工相关规范、文献资料、学者研究成果等,对明挖法、盾构法、矿山法等3种施工方法的风险因素进行0～1数值量化,同时对风险可能性等级和风险损失等级进行0～1数值量化;从风险控制策略和风险控制措施两方面进行风险控制的研究。(4)基于SQL Server数据库和C#语言,开发地铁隧道施工安全风险评估软件。软件可对事故信息进行存储和查询,同时也可对明挖法、盾构法、矿山法等3种施工方法的专项施工风险进行评估。(5)将地铁隧道施工风险评估研究成果应用于成都地铁5号线施工风险评估。评估结果表明:成都地铁5号线洞子口站基坑施工风险等级为Ⅰ级;盾构法下下穿西北桥及府河段施工风险等级为Ⅰ级;矿山法下穿农行西藏分行驻成都办事处段施工风险等级为Ⅱ级。本文评估结果与工程实际情况一致。
[Abstract]:The subway construction is usually located in the center of the city, the construction environment is complex and changeable, the construction environment is large, the construction period is long, the concealment is strong, the main body is more, this will inevitably result in the project in the construction period the risk quantity is many, the kind is complex, There is greater uncertainty and safety risk in every link of construction. Therefore, it is of great practical significance to study the safety risk assessment of subway tunnel construction. On the basis of independent research and summary, this paper has carried out the research on safety risk assessment of subway tunnel construction by means of literature research, field investigation, expert questionnaire investigation, statistical analysis and fuzzy mathematics theory. Based on the first phase project of Chengdu Metro Line 5, the application of safety risk assessment in subway tunnel construction is carried out. The main work and achievements are as follows: (1) the database of subway construction accident is established. This paper analyzes 192 typical accidents in tunnel construction in China, classifies the accidents and analyzes the influencing factors of the typical accidents. Combined with the existing research results, engineering field investigation and data inquiry, the index system of special risk assessment for three construction methods, namely, open excavation method, shield method and mine method, is established. (2) using BP artificial neural network algorithm and combining with fuzzy mathematics theory, Taking the risk factor as the input layer of the neural network, the probability and loss of the risk event as the output layer of the neural network, respectively, the open-cut method and shield method are established. The mathematical model of risk assessment of three construction methods such as mine method. (3) referring to the relevant norms of risk assessment in subway tunnel construction, the evaluation standard of construction risk of subway tunnel is determined. In order to facilitate the BP neural network to estimate the risk possibility grade and the risk loss grade, based on the fuzzy mathematics theory, combined with the subway construction related specification, the literature data, the scholar research result, so on the open excavation method, the shield tunneling method, The risk factors of three kinds of construction methods, such as mine method, are numerically quantified by 0 ~ (1) and 0 ~ (1) of risk possibility grade and risk loss grade. Research on risk control from two aspects of risk control strategy and risk control measures. (4) based on SQL Server database and C # language, develop the subway tunnel construction safety risk assessment software. The software can store and query the accident information, at the same time, it can also carry on the open excavation method, the shield machine method, The special construction risk of three construction methods, such as mine method, is evaluated. (5) the research results of risk assessment of subway tunnel construction are applied to the construction risk assessment of Chengdu Metro Line 5. The evaluation results show that the construction risk grade of foundation pit of Dongzikou Station on No. 5 Line of Chengdu Metro is grade 鈪，
本文编号：2320868
[Abstract]:The subway construction is usually located in the center of the city, the construction environment is complex and changeable, the construction environment is large, the construction period is long, the concealment is strong, the main body is more, this will inevitably result in the project in the construction period the risk quantity is many, the kind is complex, There is greater uncertainty and safety risk in every link of construction. Therefore, it is of great practical significance to study the safety risk assessment of subway tunnel construction. On the basis of independent research and summary, this paper has carried out the research on safety risk assessment of subway tunnel construction by means of literature research, field investigation, expert questionnaire investigation, statistical analysis and fuzzy mathematics theory. Based on the first phase project of Chengdu Metro Line 5, the application of safety risk assessment in subway tunnel construction is carried out. The main work and achievements are as follows: (1) the database of subway construction accident is established. This paper analyzes 192 typical accidents in tunnel construction in China, classifies the accidents and analyzes the influencing factors of the typical accidents. Combined with the existing research results, engineering field investigation and data inquiry, the index system of special risk assessment for three construction methods, namely, open excavation method, shield method and mine method, is established. (2) using BP artificial neural network algorithm and combining with fuzzy mathematics theory, Taking the risk factor as the input layer of the neural network, the probability and loss of the risk event as the output layer of the neural network, respectively, the open-cut method and shield method are established. The mathematical model of risk assessment of three construction methods such as mine method. (3) referring to the relevant norms of risk assessment in subway tunnel construction, the evaluation standard of construction risk of subway tunnel is determined. In order to facilitate the BP neural network to estimate the risk possibility grade and the risk loss grade, based on the fuzzy mathematics theory, combined with the subway construction related specification, the literature data, the scholar research result, so on the open excavation method, the shield tunneling method, The risk factors of three kinds of construction methods, such as mine method, are numerically quantified by 0 ~ (1) and 0 ~ (1) of risk possibility grade and risk loss grade. Research on risk control from two aspects of risk control strategy and risk control measures. (4) based on SQL Server database and C # language, develop the subway tunnel construction safety risk assessment software. The software can store and query the accident information, at the same time, it can also carry on the open excavation method, the shield machine method, The special construction risk of three construction methods, such as mine method, is evaluated. (5) the research results of risk assessment of subway tunnel construction are applied to the construction risk assessment of Chengdu Metro Line 5. The evaluation results show that the construction risk grade of foundation pit of Dongzikou Station on No. 5 Line of Chengdu Metro is grade 鈪，
本文编号：2320868
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