Keywords Submarine pipeline;Distributed optical fiber sensing technology;Corrosion;Span;weld crack;VTV;Fracture;Fatigue;FAD;PECA;Reliability;Construction method;Accident cause;

• 海洋管道;分布式光纤传感技术;腐蚀;悬跨;焊缝裂纹;涡激振动;断裂;疲劳;失效评估图;PECA;可靠度;施工方法;事故原因;