One kind of condition deepwater drilling riser mechanical behavior of the test system and test methods based on analog

The present invention discloses a riser mechanical behavior test simulation system based on deepwater drilling conditions in the trailer plate (3) and the trailer are sequentially connected between the upper connecting plate (4) of tri instrument (12 ), an upper connecting structure, riser (13), and the third lower connection force gauge structure (14), the drill string (42) and connected to drive means disposed in the riser, an upper connecting structure connecting the top Zhang Li applying mechanism, drill (42) a lower pressure column connected to a drill adjusting mechanism submersible pump (5) connected to a lower portion of the connecting structure; test methods are also disclosed. Advantageous effects of the present invention are: to fully accurately simulate drilling riser Mechanical Behavior coupling conditions with the marine environment in the deep sea, ocean current the device can simulate the environment, Zhang Li can be applied to the top of the riser, different flow rates can be simulated interior drilling fluid circulation, can simulate different speeds of rotation of the drill string and applying different WOB.