既有线扩能改造施工安全评价

发布时间：2019-03-27 17:21

【摘要】：为适应经济建设的快速增长,铁路新线建设不断增加的同时,既有线扩能改造规模也日益扩大。由于既有线施工时间要求严、干扰因素多、相关部门配合多等特点,安全管理一直是既有线扩能改造项目管理的一个难点。因此,建立一个系统、完善的安全评价体系,选择适当的分析方法对既有线扩能改造施工进行客观的安全评价,并借此指导施工现场的安全管理,尽可能地减少施工过程中的事故发生率和事故损失,已经成为一个迫切需要解决的问题。目前,铁路建设的安全评价主要采用检查表法。这种方法简单易行,操作性强,但该评价方法以经验为主,主观性强。因此,在反映项目总体安全水平上缺乏准确性。针对这些问题,本文应用未确知测度理论对既有线扩能改造施工安全评价方法进行研究和分析。首先,对既有线扩能改造施工过程中的主要危险因素和有害因素进行了分析和研究。为加强危险及有害因素的辨识能力,在定量分析中引入模数事故树分析方法。其次,通过对既有线扩能改造施工安全的全面分析,建立了相应的安全评价指标体系。最后,详细叙述安全评价的实施步骤及方法。应用层次分析法确定评价指标的权值,将未确知测度理论应用于安全评价中。通过一个工程实例的安全评价进行说明,验证评价体系及评价方法的有效性。
[Abstract]:In order to adapt to the rapid growth of economic construction, the construction of new railway lines continues to increase, at the same time, the scale of capacity expansion and transformation of existing railway lines is also expanding day by day. The safety management is always a difficult point in the project management of the expansion and reconstruction of the existing railway because of the strict construction time, the many interference factors and the cooperation of the relevant departments. Therefore, establish a system, perfect the safety evaluation system, select the appropriate analysis method to carry on the objective safety evaluation to the construction of the expansion and reconstruction of the existing railway line, and thus guide the safety management of the construction site. It has become an urgent problem to reduce the accident rate and accident loss in the construction process as far as possible. At present, the safety evaluation of railway construction mainly adopts the check table method. This method is simple and easy to operate, but the evaluation method is mainly experiential and subjective. Therefore, there is a lack of accuracy in reflecting the overall safety level of the project. In order to solve these problems, this paper applies the unascertained measure theory to study and analyze the evaluation method of construction safety for the expansion and reconstruction of existing railway lines. Firstly, the main risk factors and harmful factors in the process of capacity expansion and reconstruction of existing railway lines are analyzed and studied. In order to enhance the identification ability of hazard and harmful factors, the modular fault tree analysis method is introduced in quantitative analysis. Secondly, through the comprehensive analysis of the construction safety of the expansion and reconstruction of the existing railway line, the corresponding safety evaluation index system is established. Finally, the implementation steps and methods of safety assessment are described in detail. The weights of evaluation indexes are determined by analytic hierarchy process (AHP), and the unascertained measure theory is applied to safety evaluation. Through the safety evaluation of an engineering example, the effectiveness of the evaluation system and evaluation method is verified.
【学位授予单位】：石家庄铁道大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U218

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