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A study on the soil liquefaction potential map of Taipei Basin using a reliable pre-liquefaction borehole database

Author

Listed:
  • Chih-Chieh Lu

    (National Center for Research on Earthquake Engineering)

  • Jin-Hung Hwang

    (National Central University)

  • Yuan-Chang Deng

    (National Center for Research on Earthquake Engineering)

  • Hsien-Li Huang

    (National Center for Research on Earthquake Engineering)

Abstract

The purpose of this study is to evaluate the soil liquefaction risk of the Taipei Basin using a reliable pre-liquefaction borehole database. To this, the study collected over ten thousand boreholes from several sources, and a rigorous screening process was adopted to delete less reliable boreholes in order to guarantee the reliability of the database. Only about 5 thousand boreholes survived. The established database was then used to determine the factor of safety against soil liquefaction by several simplified methods subject to the design earthquake of the Taipei Basin. To consider the surface manifestation of liquefaction, the liquefaction potential index (PL) was calculated. Since the ground surface of the Taipei Basin commonly has a several meters of non-liquefiable clay, a the further consideration of the thickness of the surface non-liquefiable crust proposed by the Japanese researchers was used to adjust the PL of each borehole according to the assumption of this study. Finally, the results by different simplified methods and the surface manifestation of liquefaction evaluation frameworks are compared and a brief summary is given.

Suggested Citation

  • Chih-Chieh Lu & Jin-Hung Hwang & Yuan-Chang Deng & Hsien-Li Huang, 2023. "A study on the soil liquefaction potential map of Taipei Basin using a reliable pre-liquefaction borehole database," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 118(2), pages 1137-1161, September.
    • Handle: RePEc:spr:nathaz:v:118:y:2023:i:2:d:10.1007_s11069-023-06043-5
    DOI: 10.1007/s11069-023-06043-5
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