A constitutive model construction method for sea sand with polyurethane chlorine barrier layer
By modifying the damage evolution coefficient, a constitutive model of polyurethane chlorine-barrier sea sand was constructed, which solved the problem of poor adaptability of existing models and realized high-precision finite element calculation and engineering design support.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-05-26
- Publication Date
- 2026-07-17
AI Technical Summary
The existing constitutive model does not consider the influence of the polyurethane chlorine barrier, which makes it impossible to accurately describe the mechanical behavior of sea sand mortar with a polyurethane chlorine barrier. The calculation results deviate significantly from the actual engineering situation, which limits the engineering promotion of polyurethane-coated sea sand technology.
Based on the uniaxial compressive and tensile test data of polyurethane-coated sea sand mortar, by correcting the damage evolution coefficient of concrete under uniaxial compression and tension, uniaxial compressive and tensile constitutive models were established. The correlation between the key parameters of the model and the polyurethane coating ratio and water-cement ratio was clarified, and a constitutive model with high fitting degree was constructed.
This method accurately describes the stress-strain characteristics of polyurethane chlorine-barrier sea sand mortar, improves calculation accuracy, has a wide range of applications, simplifies the finite element modeling process, provides reliable theoretical support for coastal and island engineering, and promotes the engineering application of the technology.
Smart Images
Figure FT_1 
Figure FT_2 
Figure FT_3