Rotary testing device for vortex-induced vibration for oblique riser under shear current

The invention relates to a rotary testing device for vortex-induced vibration for an oblique riser under shear current, belonging to the technical field of ocean engineering. The rotary testing device comprises a riser model mechanism, a measurement and analysis system platform module, a driving module, a top cantilever module, a cylinder shaft segmentation module, a bottom riser fixing module and a bottom supporting module, wherein the riser model mechanism is fixedly arranged between the top cantilever module and the bottom riser fixing module; the cylinder shaft segmentation module is vertically arranged in an ocean engineering deepwater basin and respectively connected with the bottom supporting module, the driving module, the top cantilever module and the bottom riser fixing module; the bottom supporting module is fixedly arranged on a lifting bottom; the driving module is connected with the cylinder shaft segmentation module and outputs power; both ends of the top cantilever module are connected with the driving module or the cylinder shaft segmentation module and the cylinder shaft segmentation module; and the measurement and analysis system platform module is connected with the riser model mechanism, the top cantilever module and the bottom riser fixing module. The invention can simulate risers of actual sizes and shear current fields.