地铁区间隧道盾构施工风险管理研究

发布时间：2018-06-01 03:04

本文选题：地铁盾构施工 + 风险管理　；参考：《青岛理工大学》2014年硕士论文

【摘要】：随着快速推进的城市化进程，盾构法逐渐成为特定地质条件下地铁建设采用较多的施工方法。地铁盾构施工具有施工周期长、受环境制约影响大等特点，且当前的施工风险管理还存在一些问题，因此，，重视地铁盾构施工风险管理研究，对地铁工程盾构施工风险进行分析、评价并指导工程实践就显得尤为重要。首先，介绍了研究的背景、目的与意义，探讨了国内外的研究现状，并对研究现状进行评述，提出论文的研究内容、方法与技术路线；同时，对风险及风险管理的概念、目标与程序进行了阐述，介绍了地铁施工风险管理与风险管理方法等理论基础。其次，介绍了地铁隧道盾构施工技术，分析了盾构施工的优缺点，并结合地铁盾构施工的特点，利用专家调查法、流程图法、鱼骨图法，分别从机械、环境与施工管理三个方面对盾构施工流程中各阶段风险源进行全面辨识，建立出一个全面的指标体系，并在此基础上建立了ISM解释结构模型，分析了各阶段指标因素之间的相互影响关系。最后，结合传统风险分析控制方法的特点，探讨了运用云理论进行风险分析、评价与控制的适用性，建立了风险评估云模型。以上海地铁13号线为例，运用熵权法确定指标权重，通过对云进行四则运算与加权合成，将定性的评价语言转化为云模型中定量的期望、熵与超熵，实现对地铁盾构施工风险的整体评价，提出相应应对策略。该模型能够将风险可能性与损失程度进行综合定量分析，克服了传统方法中专家确定风险等级的主观性，兼顾了风险评价的模糊性与不确定性，具有一定的科学性。本文对盾构施工风险因素之间的影响关系进行了深入分析，建立了基于熵权法和云理论的风险评估模型，并结合工程案例进行分析与验证，为地铁施工的风险管理提供一定的借鉴作用。
[Abstract]:With the rapid urbanization process, the shield method has gradually become more construction methods for subway construction under specific geological conditions. The subway shield construction has the characteristics of long construction period and great influence on the environment, and there are some problems in the current construction risk management. Therefore, the research on the risk management of subway shield construction is paid attention to. It is particularly important to analyze, evaluate and guide the construction practice of shield tunneling.
First, it introduces the background, purpose and significance of the research, discusses the status of the research at home and abroad, reviews the research status, puts forward the research contents, methods and technical routes of the paper, and expounds the concept, objectives and procedures of risk and risk management, and introduces the management of subway construction risk and the method of risk management. On the basis.
Secondly, it introduces the shield construction technology of subway tunnel, analyzes the advantages and disadvantages of shield construction, and combines the characteristics of the subway shield construction, and uses the expert investigation method, flow chart method and fish bone map method to identify the risk sources in each stage of the shield construction process from three aspects of machinery, environment and construction management. Based on the index system, the ISM interpretation structure model is established, and the interrelationship between the index factors in each stage is analyzed.
Finally, combining the characteristics of the traditional risk analysis control method, this paper probes into the application of cloud theory to risk analysis, evaluation and control, and establishes a risk assessment cloud model. Taking the Shanghai Metro Line 13 as an example, the entropy weight method is used to determine the index weight, and the qualitative evaluation language is transformed into the qualitative evaluation language by four operations and weighted synthesis of the cloud. The quantitative expectation, entropy and entropy in the cloud model, the overall evaluation of the subway shield construction risk is realized, and the corresponding countermeasures are put forward. The model can analyze the risk probability and the degree of loss comprehensively and quantitatively, overcome the subjective of the experts to determine the risk grade in the traditional method, and take into account the fuzziness and uncertainty of the risk evaluation. It has a certain scientific nature.
This paper makes an in-depth analysis of the relationship between the risk factors of the shield construction, establishes a risk assessment model based on entropy weight and cloud theory, and analyzes and verifies the engineering cases, which can provide some reference for the risk management of subway construction.
【学位授予单位】：青岛理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U455.43;U231.3

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