| 要旨 |
Concrete is used for biological shielding wall, and there are parts that are affected by radiation in the long term. Previous studies have reported that neutron irradiation causes the aggregate expansion and loss of strength and Young’s modulus. Hence, it is crucial to predict the effect on the concrete biological shield (CBS) in the future. In this study, Rigid Body Spring Model (RBSM) was used to conduct a numerical analysis on CBS. As a result, it was confirmed that no tensile stress was generated on the outside of CBS, which was different from the previous analyzes by the finite element method. |