Liquefaction-induced ground subsidence extracted from Digital Surface Models and its application to hazard map of Urayasu city, Japan

Kazuhiro Kajihara, Rama Mohan Pokhrel, Takashi Kiyota, Kazuo Konagai

    Abstract

    The major problems associated with liquefaction-induced ground subsidence are tilting of houses, buckling of roads, lifelines cut off, etc. For the mitigation and preparedness over the liquefaction-induced damage, a detailed study on prediction of ground subsidence for future earthquake is important. On the 11th of March 2011, the Off the Pacific Coast of Tohoku Earthquake (MW=9) hit Japan and caused severe liquefaction in Urayasu City, Chiba Prefecture. In this study, in order to investigate the relationship between liquefaction potential, PL, and liquefaction-induced subsidence which occurred in the 2011 earthquake, liquefaction assessment is first carried out by using a number of boreholes and relevant soil test data from Urayasu city. Then, the liquefaction-induced road subsidence is extracted from a set of the Digital Surface Models (DSMs) from airborne LiDAR (Light Detection And Ranging) surveys before (2006) and after (2011) the earthquake. The extracted subsidence from the DSMs indicates that the liquefaction-induced road subsidence is larger for the residential roads than that of the main roads, thus the relationship between PL and road subsidence is different for each type of road. Finally, an attempt is made to apply the obtained PL and road subsidence relations to attain a unique hazard map for Urayasu city.

    Original languageEnglish
    Title of host publication15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015: New Innovations and Sustainability
    PublisherAsian Regional Conference on Soil Mechanics and Geotechnical Engineering
    Pages829-834
    Number of pages6
    DOIs
    StatePublished - 2015
    Event15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015 - Fukuoka, Kyushu, Japan

    Other

    Other15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015
    CountryJapan
    CityFukuoka, Kyushu
    Period15/11/915/11/13

    Fingerprint

    liquefaction
    subsidence
    road
    earthquake
    hazard
    buckling
    soil test
    mitigation
    borehole
    damage
    coast
    prediction

    Keywords

    • Liquefaction potential
    • Reclaimed land
    • Soil subsidence
    • Urayasu city

    ASJC Scopus subject areas

    • Geotechnical Engineering and Engineering Geology
    • Soil Science

    Cite this

    Kajihara, K., Pokhrel, R. M., Kiyota, T., & Konagai, K. (2015). Liquefaction-induced ground subsidence extracted from Digital Surface Models and its application to hazard map of Urayasu city, Japan. In 15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015: New Innovations and Sustainability. (pp. 829-834). Asian Regional Conference on Soil Mechanics and Geotechnical Engineering. DOI: 10.3208/jgssp.TC203-02

    Liquefaction-induced ground subsidence extracted from Digital Surface Models and its application to hazard map of Urayasu city, Japan. / Kajihara, Kazuhiro; Pokhrel, Rama Mohan; Kiyota, Takashi; Konagai, Kazuo.

    15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015: New Innovations and Sustainability. Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, 2015. p. 829-834.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Kajihara, K, Pokhrel, RM, Kiyota, T & Konagai, K 2015, Liquefaction-induced ground subsidence extracted from Digital Surface Models and its application to hazard map of Urayasu city, Japan. in 15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015: New Innovations and Sustainability. Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, pp. 829-834, 15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015, Fukuoka, Kyushu, Japan, 9-13 November. DOI: 10.3208/jgssp.TC203-02
    Kajihara K, Pokhrel RM, Kiyota T, Konagai K. Liquefaction-induced ground subsidence extracted from Digital Surface Models and its application to hazard map of Urayasu city, Japan. In 15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015: New Innovations and Sustainability. Asian Regional Conference on Soil Mechanics and Geotechnical Engineering. 2015. p. 829-834. Available from, DOI: 10.3208/jgssp.TC203-02

    Kajihara, Kazuhiro; Pokhrel, Rama Mohan; Kiyota, Takashi; Konagai, Kazuo / Liquefaction-induced ground subsidence extracted from Digital Surface Models and its application to hazard map of Urayasu city, Japan.

    15th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2015: New Innovations and Sustainability. Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, 2015. p. 829-834.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

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