Science Links Japan | Research on the Restoration of the North Breakwater at Otaru Port as Civil Engineering Heritage

Research on the Restoration of the North Breakwater at Otaru Port as Civil Engineering Heritage

Accession number;06A1016260

Title;Research on the Restoration of the North Breakwater at Otaru Port as Civil Engineering Heritage

Author; SEKIGUCHI SHIN-ICHIRO (Serv. Center Of Port Engineering Hokkaido Branch) NAKAMURA HIROYUKI (Serv. Center Of Port Engineering Hokkaido Branch) TAKAHASHI ISAO (Serv. Center Of Port Engineering Hokkaido Branch) YAMAUCHI ITUKI (Serv. Center Of Port Engineering Hokkaido Branch) YAMOTO KEISUKE (Serv. Center Of Port Engineering Hokkaido Branch)

Journal Title;Kaiyo Kogaku Shinpojiumu (CD-ROM)

Journal Code:S0108B

ISSN:

VOL.19th;NO.;PAGE.ROMBUNNO.29(2006)

Figure&Table&Reference;FIG.10, REF.15

Pub. Country;Japan

Language;English

Abstract;The north breakwater at the Otaru Port, constructed from 1897 to 1908, is a part of our civil engineering heritage and widely known as Japan's first authentic open-sea breakwater. Recent research has found that its foot protection concrete blocks have been displaced and the mound has been deformed. Should it be left as it is, the vertical superstructure might collapse due to scouring. It was therefore decided that the structure would be restored. In the restored structure, the foot protection concrete blocks and the mound should be more stable than the existing ones, because they will be subject to raging waves for many years to come. Restoration worked based on the structure's original design, an approach generally taken in renovating historical buildings, is not appropriate in this case. This paper discusses a basic concept for the restoration project of the north breakwater and a monitoring system for its long-term management. (author abst.)

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