2025 年 25 巻 13 号 p. 13_98-13_111
We propose a method to evaluate the restorability of railway structures. In the proposed method, all earthquake motions expected within a structure's design service life are used as the design earthquake motions. In addition, the recovery time after an earthquake, which is directly related to early recovery, is used as the verification index. We also propose a more practical method of representing structural conditions that correspond to the same recovery time using a nomogram by performing calculations under various conditions in advance. The proposed method allows us to design structures that can be restored more easily, following the same procedure as conventional seismic design, and it is expected to shorten the recovery time after an earthquake.
