Device for testing vortex-induced vibration and rotation of inclined riser under cascade shearing flow

The present invention relates to a device for testing vortex-induced vibration and rotation of an inclined riser under cascade shearing flow, which belongs to the technical field of marine engineering. The device comprises a riser model mechanism, a measurement and analysis system platform module, a drive module, a top cantilever module, a cylinder shaft segmentation module, a bottom riser fixing module and a bottom support module, the riser model mechanism is fixed between the top cantilever module and the bottom riser fixing module, the cylinder shaft segmentation module is vertically arranged in a marine engineering deep pool and is respectively connected with the bottom support module, the drive module, the top cantilever module and the bottom riser fixing module, the bottom support module is fixedly arranged at the lifting bottom of the marine engineering deep pool, the drive module is respectively connected with the cylinder shaft segmentation module and the top cantilever module, the left end and the right end of the top cantilever module are respectively connected with the cylinder shaft segmentation module and the measurement and analysis system platform module is respectively connected with the riser model mechanism, the top cantilever module and the bottom riser fixing module. The device can simulate the cascade shearing flow for actual risers.