高速桥梁工程建设风险管理研究

发布时间：2018-12-31 09:04

【摘要】：我国城市化飞速发展,全国各地桥梁工程建设项目也随之加快。对于城市内部而言,桥梁作为城市市政建设对于缓解交通阻塞,便利市民出行起到了至关重要的作用。然而,随着各地桥梁工程建设项目的纷纷上马,在建设过程中重大事故也是时常发生,造成了重大的财产损失以及人员伤亡,社会影响恶劣。所以,必须要对桥梁工程建设实施风险评估,以降低事故发生的概率。本文以高速桥梁工程建设风险评估为研究对象,进行了以下研究:1.分析桥梁工程建设风险评估理论,归纳总结了其概念、特点和原理,并且从桥梁的结构、施工和环境条件等多方面说明了桥梁工程建设风险因素的分类;2.分析研究了适用于桥梁工程建设的相关风险评估方法,重点研究了层次分析法(AHP法)和加速遗传算法(AGA算法),指出了这两种方法的缺点,例如:AHP法步骤复杂、计算量大;遗传法收敛慢、准确性差等。提出了AGA、AHP和模糊数学理论相结合的高速桥梁工程的建设风险评估模型。尽量削弱整个风险评估过程中人为主观因素的干扰,使评估结果更为科学准确,最大限度的降低风险事故发生的概率。3.以A大桥为工程背景,将本文提出的风险评估模型对其进行风险评估。最终评估结果具有较高的科学性和准确度,说明本文提出的模型能够对桥梁工程建设进行科学合理的风险评估,为参建人员提供正确的风险参考依据,该方法具有较高的实用性。
[Abstract]:With the rapid development of urbanization in China, the bridge construction projects in various parts of the country are also accelerated. As a municipal construction, bridge plays an important role in relieving traffic jam and facilitating public travel. However, with the construction of bridge projects going on one after another, serious accidents often occur in the process of construction, resulting in significant property losses and casualties, and the social impact is bad. Therefore, it is necessary to carry out risk assessment for bridge construction in order to reduce the probability of accidents. In this paper, the high-speed bridge construction risk assessment as the research object, carried out the following research: 1. This paper analyzes the theory of risk assessment of bridge engineering construction, summarizes its concept, characteristics and principles, and explains the classification of risk factors in bridge construction from the aspects of bridge structure, construction and environmental conditions. 2. This paper analyzes and studies the relevant risk assessment methods suitable for bridge construction, focuses on the analytic hierarchy process (AHP) and the accelerated genetic algorithm (AGA), and points out the shortcomings of these two methods, such as the complexity of the AHP method. Large amount of calculation; Genetic method has slow convergence and poor accuracy. A risk assessment model of high speed bridge engineering based on the combination of AGA,AHP and fuzzy mathematics is proposed. The interference of human subjective factors in the whole process of risk assessment is weakened as far as possible, so that the evaluation results are more scientific and accurate, and the probability of occurrence of risk accidents is reduced to the maximum extent. 3. Taking the A Bridge as the engineering background, the risk assessment model proposed in this paper is used to evaluate the risk. The result of the final evaluation is more scientific and accurate, which shows that the model proposed in this paper can carry out scientific and reasonable risk assessment for the bridge construction, and provide the correct risk reference basis for the participants. This method has high practicability.
【学位授予单位】：安徽工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：F426.92;F272.3

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