埋地天然气管线的地震损伤与易损性评估
本文选题:埋地天然气管道 + 地震损伤 ; 参考:《哈尔滨工业大学》2014年硕士论文
【摘要】:生命线是人类生活和城市必需的基础设施体系,它通常用于输送污水、燃料、能源、信息、石油和天然气等城市居民的必需品。因此,避免震区的管道系统出现严重破坏对各个国家的防震减灾决策均非常重要。鉴于此,,本文针对天然气管网系统开展了地震破坏和易损性评估。 本文针对阿拉木图地区开展详细的研究和数据收集。采用ABAQUS软件从静力和动力两个方面研究地管道在地震作用下的反应,在分析过程中进行了土壤和管道相互作用的三维模型的简化,考虑了管道-土相互作用,考虑了影响静态和地震荷载作用下连续管道的因素,包括:载荷材料、直径、边界条件、土壤特性等因素。本文用位于哈萨克斯坦的天然气管道在8级地震作用下的反应分析对本文所建立的天然气管网有限元模型进行了验证。进一步运用地震易损性理论,给出了天然气管网的地震易损性曲线,并对管网的概率地震安全进行了评估。研究发现:对于天然气管道,最可能的损伤将发生在带铰链边界条件的粘土中,铰链边界条件取决于其他类型的土壤。
[Abstract]:Lifelines are essential infrastructure systems for human life and cities. They are often used to transport sewage, fuel, energy, information, oil and natural gas and other necessities to urban residents. Therefore, it is very important for every country to avoid serious damage of pipeline system in earthquake area. In view of this, the earthquake damage and vulnerability assessment of natural gas pipeline system is carried out in this paper. This paper carries out detailed research and data collection for Almaty region. The static and dynamic responses of pipelines under earthquake are studied by using ABAQUS software. The three-dimensional model of soil and pipeline interaction is simplified and the pipe-soil interaction is considered in the process of analysis. The factors affecting the continuous pipeline under static and seismic loads are considered, including load material, diameter, boundary conditions, soil characteristics and so on. In this paper, the finite element model of the natural gas pipeline in Kazakhstan is verified by the response analysis of the gas pipeline located in Kazakhstan under the action of the earthquake of M = 8. Based on the theory of seismic vulnerability, the seismic vulnerability curve of natural gas pipeline network is given, and the probabilistic seismic safety of natural gas pipeline network is evaluated. It is found that for natural gas pipelines the most likely damage will occur in clay with hinged boundary conditions which depend on other types of soil.
【学位授予单位】:哈尔滨工业大学
【学位级别】:硕士
【学位授予年份】:2014
【分类号】:TU996
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