【作者】 李芳成；

【导师】 宋扬；

【作者基本信息】 山东科技大学 ， 安全技术及工程， 2003， 博士

【摘要】 本文在详细研究地下结构可靠性基本特征的基础上，结合地下结构具体特点，针对地下结构“设计可靠性”、“制造可靠性”、“运行可靠性”三个层次进行了地下结构可靠性广义特征研究、可靠性表征体系研究、以及结构可靠性评价体系研究。提出了综合考虑地下结构广义特征，实现设计有依据、制造有规范、管理有措施，即设计、施工与管理寿命期全程控制的思想。改变以往设计、施工、管理各阶段脱节，设计可靠性高、制造可靠性低、管理可靠性保障体系不健全的局面。提出了逐步实现系统化、信息化、标准化、可视化的决策与监控的目标。给出了地下结构设计、制造与管理纲要。围绕上述目标针对如下几个方面的具体问题进行了研究，得出了一些具有理论和实践指导意义的结论。 提出了地下结构重要等级的基本概念与分类方法，根据内积空间上最佳平方逼近原理建立了结构重要等级(结构重要度)与结构可靠性的概率分布模型，同时给出了应用模拟算例；提出了标准寿命可靠度、寿命可靠度梯度等概念，建立了结构寿命与可靠性的关系模型；提出了地下结构动力可靠度的概念以及动态可靠度指标的表达形式；讨论了地下结构制造费用与运行费用的关系，研究了地下结构可靠性设计准则，采用模糊优化方法建立了地下结构可靠性优化设计模型；提出了制造可靠性的相关基本概念，针对地下结构制造可靠性给出了人为失误的定义、类型、模型以及评价方法，对人为失误的控制对策进行了研究，针对锚杆支护系统建立了地下结构可靠性保障体系，针对锚杆支护系统研究建立了地下结构制造可靠性评价方法与体系。 采用突变理论对地下结构失稳机理进行了研究，探讨了结构可靠性的蜕变机理与运行可靠性特征，给出了地下结构支护抗力的取值范围；采用最大信息熵理论给出了地下结构运行可靠性概率模型、以结构支护抗力表达的非概率模型、以及能够综合反映结构特征、制造特征和管理特征的综合因素系统运行可靠性模型；对地下结构运行可靠性管理体系进行了研究，采用熵理论建立了地下结构管理可靠性模型；采用混沌理论分析了地下结构系统动力学特征，给出了依据围岩收缩率的混沌动力学预测预报模型，同时采用映射的方法给出了利用已有数据进行地下结构系统可靠性评价的单一参量评价方法和评价模型；采用人工神经网络方法给出了地下结构可靠性综合因素评价方法及应用实例。更多还原

【Abstract】 Generalized characteristic, description system, assessment system of reliability is studied based on basis characters of reliability in underground structure to aim at design reliability, made reliability, running reliability in underground structure. This thesis sets forth the whole journey control thoughts and methods of the reliability based on design reliability, made reliability and running reliability in underground structure. Unsound complexion, which design, construction and management is out of joint is altered, namely design reliability is high, made reliability is low and management reliability is unfit. Decision-making and monitoring objective of systematization communication standardization visibility is put forward and gradually realized. Design, made and management program of reliability in underground structure is given. Concrete aspects mentioned above are researched and get theoretic as well as practical conclusions.Basis concepts of ranks and classification methods of reliability in underground structure are brought forward. Probability distribution model is established as well as solution by square approach principle in inner space. Ideas of level life reliability and life reliability grad are also given and relation between structure life and reliability is founded. Concept, index and express forms of dynamic reliability in underground structure are concerned. Relation between made capital and running cost and design rule are discussed. Fuzzy optimization method is used to establish optimizing design model. Concept of made reliability is given. Men error concept, style and assessment method is studied. Assurance system is set up to aim at bolting system and assessment ways and system.Support resistance scope is given based on instability principle probe into metamorphosis mechanism and running characteristic of reliability by catastrophe theory. The probability model, non-probability model of frame support structure and synthesis factors model of running reliability reflecting structure, made and management are expressed by information entropy. Management reliability model in underground structure is set up by entropy theory. Dynamic characteristic of reliability in underground structure is analyzed by chaos theory to establish prediction model. Single parameter assessment methods and models are given by mapping. Synthesis parameter assessment methods and practical application are given by artificial neural networks method.更多还原