PSI - Issue 38

Yuichi Shiraishi et al. / Procedia Structural Integrity 38 (2022) 588–595 A thor name / Structural Integrity P o edi 00 (2021) 000 – 000

594

7

*DXJH 1R

&UDFN

Fig. 18. the surface of a deck plate around TRS (the west side of gauge No.13)

Fig. 15. the condition of inside core hole of U1 at south side

*DXJH 1R

*DXJH 1R

Fig. 19. the surface of a deck plate around TRS (the east side of gauge No.13)

Fig. 16. the condition of inside core hole of U2 at north side

*DXJH 1R

Fig. 17. the condition of inside core hole of U2 at south side

4. Summary Principal results obtained through this study are as follows. 1.

For the existing structure, sufficient effects of preventive countermeasure and post countermeasure using TRS and angle steels against fatigue cracking at welded joints between trough ribs and cross ribs has been verified through fatigue tests. However, fatigue cracking at welded joints between a deck plate and trough ribs could not be prevented.