2024 Volume 80 Issue 13 Article ID: 23-13123
In recent years, the effects of crustal deformation caused by fault displacement on structures in addition to earthquake ground motions during earthquakes have been attracting attention. In such cases, the super-position of the two is also an issue, but it has been difficult to dynamically evaluate the effects with the evaluation methods that have been widely used up to now. In this study, we examined earthquake ground motions caused by the main fault activity and fault displacement of sub-faults using dynamic rupture simulation analysis that can dynamically evaluate earthquake ground motions and fault displacement, and found that the sub-fault activity occurs later than the main fault. The culvert was additionally modeled using RC nonlinear material to evaluate the effect of the culvert being subjected to sub-fault displacement. Comparison with static analysis results indicated that dynamic effects were limited.
