Research on Numerical Simulation of Cohesive Behavior in Shearkey-Less Grouted Connection

  Introduction  Grouted connections of offshore wind foundation structures exhibit complicated behavior, and in particular, the interaction between grouted material and steel pipe is crucial to the overall performance.

  Method  This paper mainly introduced and analyzed the behavior attribute configuration on the simulation interface of the cohesive model. Cohesive model theory was introduced in terms of cohesive behavior of cohesive model, criteria for interface damage judgment and criteria for interface damage evolution. Based on a typical shearkey-less grouted connection, conventional configuration during modeling and contact configuration of cohesive model were introduced.

  Result  Through analysis, the feasibility of implementing cohesive behavior in the cohesive model in ABAQUS is proven.

  Conclusion  The cohesive model proposed by this paper can simulate the collaborative deformation of steel cylinder wall and grouting body, Mises stress distribution of the steel cylinder wall, Tresca stress distribution of the grouting body and load-displacement curve well.