2022 Volume 78 Issue 2 Pages I_583-I_588
Cellular-bulkhead quaywalls, which are a relatively economical form of quay structure, are often used in the construction of large depth quays, but the large water depths require large construction costs. Further reduction of construction costs is needed. On the other hand, high seismic performance is required for deep-water quays, and it is necessary to ensure this performance. In this study, shaking model tests were carried out using a centrifuge to investigate the seismic behaviors of a cellular quaywall structure using a solidification method behind the cellular-bulkhead quaywall, with the aim of making the structure more economical and effective. Shaking model tests showed that the displacement of the cellular-bulkhead quaywall was similar in the block- and grid-type improvement cases, suggesting that the improvement rate of the solidification method could be reduced. Some cracks were observed locally in the cement treated soil, but the displacement was reduced by 0.4–0.7 m compared to the unimproved case, indicating that the solidified method was effective in improving the ground behind the cellular-bulkhead quaywalls.
