The earthquake happened in WenChuan city, SiChuan province of China on twelfth June 2008 had greatly impacted the integrity of LanChengYu pipeline, which is the only way of providing product oil to SiChuan province. The pipeline designers have paid more attention to the threat of earthquake after that. This paper reviewed the traditional methods of calculating pipeline failure frequency caused by earthquake, and pointed out their shortcomings. In addition, a new method was provided. Firstly researchers should calculate the additional strains of pipe caused by earthquake which related to the peak ground acceleration (PGA). The method of additional strains calculation was provided in the Chinese industry standard SY/T 0450. Secondly the uncertainty calculation was conducted to get the rule of distribution. Finally the additional strain was compared to the allowable strain of pipe, and the probability of exceeding is the pipeline failure frequency caused by earthquake. Further An example was followed. The parameters needed were listed, and the pipeline failure frequency along the station was illustrated. The result may be useful to pipeline designers.
展开▼
机译：2008年6月12日，中国四川省汶川市发生地震，极大地影响了LanChengYu管道的完整性，这是向四川省提供成品油的唯一途径。此后，管道设计人员更加关注地震的威胁。综述了地震引起管道失效频率的传统计算方法，并指出了其不足。另外，提供了一种新方法。首先，研究人员应该计算与地震峰值加速度（PGA）相关的地震引起的管道附加应变。中国工业标准SY / T 0450提供了附加应变的计算方法。其次，进行了不确定度计算，得出了分布规律。最后，将附加应变与管道的允许应变进行比较，超过的概率就是地震引起的管道失效频率。进一步跟随一个例子。列出了所需的参数，并说明了沿站的管道故障频率。结果可能对管道设计人员有用。
展开▼
