The vortex induced vibration (VIV) of marine risers has been investigated by many researchers in experimental studies of a straight flexible riser model as well as a rigid cylinder to reveal the dynamic response characteristic and the mechanics behind it. However, due to the limitation of experimental apparatus, very few studies are about the VIV of a steel catenary riser (SCR) which is with a complex geometry. To investigate the VIV features and to further develop the corresponding numerical predictions of a SCR under steady current, a large-scale model test of a SCR was towed in an ocean basin at various speeds. Fiber Bragg grating strain sensors are instrumented on the riser model to measure both in-plane and out-of-plane responses. The characteristics of oscillating amplitude and dominating frequency response, the phenomenon of mode competition and travelling wave and the fatigue damage of the steel catenary riser in inline and cross-flow direction under steady current are analyzed.

许多研究人员在对直线形柔性立管模型以及刚性圆柱体进行的实验研究中，对海洋立管的涡激振动（VIV）进行了研究，以揭示其动态响应特性及其背后的机理。但是，由于实验设备的限制，很少有关于具有复杂几何形状的钢悬链立管（SCR）的VIV的研究。为了研究VIV特性并进一步发展稳定电流下SCR的相应数值预测，在海盆中以各种速度拖曳SCR的大规模模型试验。光纤布拉格光栅应变传感器安装在立管模型上，可测量平面内和平面外响应。振荡幅度和主导频率响应的特性