2025 Volume 81 Issue 1 Article ID: 24-00218
For massive concrete structures where thermal cracking is predicted, thermal stress analysis is often performed in advance. The most commonly used method for thermal stress analysis is the three-dimensional Finite Element Method (3D FEM). While 3D FEM has the advantage of accurately calculating thermal stresses for structures with complex geometries, it requires a certain amount of experience to create analytical models and a significant amount of labor and time to create the 3D mesh.
On the other hand, the CP (Compensation Plane) method is a simplified analysis for thermal stress and can be used to calculate thermal stress with the same accuracy as 3D FEM when limited to specific structures. However, the CP method requires the appropriate setting of external constraint coefficients.
In this study, we improved the accuracy of the CP method by using particle swarm optimization to identify the external constraint coefficients in accordance with current specifications.
