基于粗糙集理论的桥梁施工安全评价模型研究

发布时间：2018-09-10 10:43

【摘要】：改革开放以来,我国土木工程建设得到飞速的发展和壮大,特别是桥梁工程的发展取得了前所未有的辉煌成就。由于桥梁建设施工工艺复杂、施工难度大、环境恶劣、技术含量高,施工队伍流动性大,同时新工艺、新材料的使用以及桥梁跨径追求等,使桥梁工程项目在安全技术上面临着越来越多的新问题,同时对桥梁安全管理提出新的要求。所以,运用国际上先进的施工安全管理方法和经验,与我国基本国情相结合,构建桥梁施工安全评价控制系统,对预防和降低安全事故的发生,具有深刻地现实和理论意义。本文根据我国桥梁施工企业安全管理的现状,综合利用安全管理的理论、系统工程理论、粗糙集理论等,并结合桥梁施工阶段的特点,建立了基于粗糙集理论的桥梁施工安全评价模型。本文主要做了以下工作:1.从施工安全管理的背景出发,对目前的安全管理理论和安全管理模式进行了综述,同时也剖析传统地安全评价方法的优点与局限性,并说明了粗糙集理论运用到桥梁施工安全评价的可行性。2.依据桥梁安全施工实际情况和国家的相关规定,建立了桥梁施工安全基础综合评价指标体系,并给每个指标设置了取值标准。3.运用粗糙集理论与方法对知识表达系统进行定量化处理,并对基础综合评价指标进行属性简约并优化得到新的综合评价指标表,确定各指标的权重,最后对桥梁安全管理进行综合评价。4.用传统的模糊层次评价法模型和本文构建的模型进行了对比实证研究,证实粗糙集理论评价方法的合理性和优越性。
[Abstract]:Since the reform and opening up, the construction of civil engineering in China has been rapidly developed and expanded, especially the development of bridge engineering has made unprecedented brilliant achievements. Because of the complex construction technology, the difficult construction, the bad environment, the high technical content, the mobility of the construction team, the use of new technology, the use of new materials and the pursuit of bridge span, etc. Bridge engineering projects are faced with more and more new problems in safety technology, and new requirements for bridge safety management are put forward at the same time. Therefore, the application of international advanced construction safety management methods and experience, combined with the basic conditions of our country, the construction of bridge construction safety evaluation and control system, to prevent and reduce the occurrence of safety accidents, has profound practical and theoretical significance. According to the present situation of safety management in bridge construction enterprises in China, this paper synthetically utilizes the theory of safety management, system engineering theory, rough set theory and so on, and combines the characteristics of bridge construction stage. The evaluation model of bridge construction safety based on rough set theory is established. This article mainly does the following work: 1. Based on the background of construction safety management, this paper summarizes the current safety management theory and safety management mode, and analyzes the advantages and limitations of traditional safety evaluation methods. The feasibility of applying rough set theory to bridge construction safety evaluation. According to the actual situation of bridge safety construction and the relevant regulations of the country, the comprehensive evaluation index system of bridge construction safety foundation is established, and the value standard .3for each index is set up. The rough set theory and method are used to quantify the knowledge expression system, and the attribute reduction and optimization of the basic comprehensive evaluation index are carried out to obtain a new comprehensive evaluation index table, and the weight of each index is determined. Finally, the comprehensive evaluation of bridge safety management. 4. By comparing the traditional fuzzy hierarchy evaluation model with the model constructed in this paper, the rationality and superiority of the rough set theory evaluation method are verified.
【学位授予单位】：长沙理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U445

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