Volume 42 Issue 12
Dec.  2021
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ZHOU Daocheng, CHANG Lichen. A Stress Analysis Model for CFRP Repaired Defective Steel Plates[J]. Applied Mathematics and Mechanics, 2021, 42(12): 1276-1286. doi: 10.21656/1000-0887.420006
Citation: ZHOU Daocheng, CHANG Lichen. A Stress Analysis Model for CFRP Repaired Defective Steel Plates[J]. Applied Mathematics and Mechanics, 2021, 42(12): 1276-1286. doi: 10.21656/1000-0887.420006

A Stress Analysis Model for CFRP Repaired Defective Steel Plates

doi: 10.21656/1000-0887.420006
  • Received Date: 2021-01-06
  • Accepted Date: 2021-06-04
  • Rev Recd Date: 2021-06-19
  • Available Online: 2021-11-15
  • Publish Date: 2021-12-01
  • In the repairing method with CFRP for steel structures with corrosion defects, the stresses of CFRP and adhesive layers are key to determine the bearing capacity of CFRP repaired structures. Based on the assumption of plane sections, the distributions of stresses and strains under bending moments were obtained; based on the adhesive shear model, the relationship between the adhesive shear stress and the displacements of the CFRP as well as the steel plate was obtained; based on the force balance, the stress relationship of the CFRP and the steel plate was obtained. Combined with the relationships between various materials, the analytical stress distribution solutions of the CFRP and the adhesive layer under the combined action of the axial force and the bending moment were derived. Numerical analysis was also conducted to calculate the defective steel plate repaired with CFRP bonded on both sides, and the results are consistent with the analytical ones. The stress distribution characteristics of the defective steel plate with CFRP bonded on both sides and the possible failure position of the component were obtained, which provides a basis for calculation of the ultimate bearing capacity of the component.

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