核电厂管道系统抗震分析

发布时间：2018-01-06 21:42

本文关键词：核电厂管道系统抗震分析　出处：《中国石油大学（华东）》2013年硕士论文　论文类型：学位论文

【摘要】：随着经济发展以及工业、农业用电的持续增长，各地电力建设项目不断增长。其中，核能发电在整个能源发电领域中占据着重要的作用，它是国家鼓励发展的清洁能源，在当前宏观扩大内需的形势下，，核能发电的建设步伐正在加快。但核工程的安全性一直是全世界人们普遍关注的问题，尤其是自日本东北海域发生的地震造成了七级核泄漏以来，全世界对核工程抗震安全性的要求已变得刻不容缓，因此研究核工程其中的一个薄弱环节，管道系统，有很重要的现实意义。为此，本文依托某项目，通过理论研究、数值模拟以及实例分析等手段对核工程管道系统及所用支架进行了抗震分析研究。主要研究内容如下：（1）对比国内外强震记录，根据各强震记录的包络情况，提出适用于核工程管道系统抗震校核的地震反应谱；（2）运用有限元理论及不同的地震响应分析方法，对比现阶段三种不同的管道应力计算软件，分析确定适用性；（3）利用振型分解反应谱法，结合工程实例，对比分析了不同刚度约束条件下的管道系统的抗震性能，同时指出在通常情况下，管道系统的危险截面位于三通及弯头截面处；（4）运用现阶段抗震计算通常采用的底部剪力法与时程分析法，着重研究对比了两种方法下，管系所用支架的地震响应情况，指出支架所处的危险截面，对比了不同地震波作用下的管道抗震性能及对应的地震响应特性；（5）结合支架的时程响应，对管系支架进行抗震可靠性分析，确定影响支架可靠性的主次因素及相关性，并研究了地面峰值加速度与结构可靠度的关系。
[Abstract]:With the development of economy and the continuous growth of electricity consumption in industry and agriculture, the electric power construction projects in various places are increasing. Among them, nuclear power generation plays an important role in the field of energy generation. It is a clean energy encouraged by the state, in the current situation of expanding domestic demand macro, the pace of nuclear power generation is accelerating, but the safety of nuclear engineering has been a universal concern all over the world. Especially since the earthquake in northeast Japan caused a magnitude 7 nuclear leakage, the requirement of seismic safety of nuclear engineering has become urgent all over the world, so the study of nuclear engineering is a weak link. Pipeline system, has very important practical significance. Therefore, based on a project, through theoretical research, numerical simulation and case analysis, this paper studies the seismic analysis of nuclear engineering pipeline system and its support. The main research contents are as follows: 1) comparing the strong earthquake records at home and abroad, according to the envelope of each strong earthquake record, the seismic response spectrum suitable for seismic verification of nuclear engineering pipeline system is put forward. 2) using the finite element theory and different seismic response analysis methods, comparing three different kinds of pipeline stress calculation software at the present stage, analyzing and determining the applicability; 3) the seismic performance of pipeline system under different stiffness constraints is compared and analyzed by using the mode decomposition response spectrum method and engineering examples, and it is pointed out that the seismic behavior of pipeline system under normal conditions is also pointed out. The dangerous section of pipeline system is located at the section of three-way and elbow; 4) by using the method of bottom shear force and time-history analysis, the seismic response of the support used in the pipe system is studied and compared, and the dangerous section of the support is pointed out. The seismic behavior and the corresponding seismic response of pipeline under different seismic waves are compared. Combined with the time history response of the support, the aseismic reliability of the pipe support is analyzed, and the primary and secondary factors affecting the reliability of the support are determined, and the relationship between the peak acceleration of the ground and the reliability of the structure is studied.
【学位授予单位】：中国石油大学（华东）
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU352.11

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