桥梁施工安全风险评估与应用研究

发布时间：2018-07-26 08:50

【摘要】：近年来随着桥梁建设进入高速发展阶段,伴随桥梁建设施工各个阶段的安全风险事故也频频出现,导致了严重的经济损失和人员伤亡,并产生了非常恶劣的社会影响,引起了人们的广泛关注,因此对桥梁施工过程进行安全风险评估显得极为重要。虽然我国在桥梁施工安全风险评估方面进行了很多研究,然而因为桥梁建设期间安全风险未知因素多,施工周期长、过程繁杂,因此还未能完全有效的达到施工风险评估与预警,桥梁施工安全风险评估工作还需进一步的研究。本文以星江特大桥为工程依托,对星江特大桥施工阶段存在的安全风险进行辨识,选用专家评议法定性分析与风险评价矩阵法及指标体系法定量分析的办法来对本工程做风险评估,得出相应的风险发生概率及风险等级,对施工项目现场施工组织及风险规避具有一定的借鉴意义。本文主要的任务有下面几项:1、结合依托工程桥梁施工项目的工程实际、现场的施工条件、地质勘察报告、施工图纸、施工组织设计等技术资料,对评估对象进行整体与专项风险评估。2、建立桥梁施工安全风险指标评价体系,采用风险矩阵法和指标体系法对各个风险事件进行评估,得出相应的风险发生概率及安全等级。3、依据得到的各个风险事件的安全等级,提出相应的风险防控对策。
[Abstract]:In recent years, with the bridge construction entering the stage of rapid development, the safety risk accidents in various stages of bridge construction also frequently appear, resulting in serious economic losses and casualties, and has produced a very bad social impact. People pay more attention to it, so it is very important to evaluate the safety risk of bridge construction. Although our country has carried out a lot of research on the safety risk assessment of bridge construction, however, because there are many unknown factors of safety risk during bridge construction, the construction period is long and the process is complicated. Therefore, the construction risk assessment and early warning can not be achieved completely and effectively, and the bridge construction safety risk assessment needs further research. Based on the Xingjiang Bridge, this paper identifies the safety risks in the construction phase of the Xingjiang Bridge. The method of qualitative analysis and quantitative analysis of risk evaluation matrix method and index system method are used to evaluate the risk of the project, and the corresponding probability and grade of risk occurrence are obtained. It has certain reference significance to construction project site construction organization and risk aversion. The main tasks of this paper are as follows: 1. Combining with the engineering practice of the bridge construction project, the site construction conditions, the geological survey report, the construction drawings, the construction organization design and other technical data, The whole and special risk assessment of the evaluation object is carried out, and the evaluation system of the bridge construction safety risk index is established. The risk matrix method and the index system method are used to evaluate the various risk events. The corresponding risk occurrence probability and safety grade. 3 are obtained. According to the safety level of each risk event, the corresponding risk prevention and control countermeasures are put forward.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U445.1

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