Energy dissipation and liquefaction at Port Island, Kobe

  • R. O. Davis University of Canterbury, Christchurch, New Zealand
  • J. B. Berrill University of Canterbury, Christchurch, New Zealand

Abstract

The Port Island, Kobe downhole records from the Hyogo-ken Nanbu earthquake are analysed to obtain approximate histories of shear stress, shear strain and dissipated energy at a range of depths. Our calculation method relies on measured accelerations in the horizontal plane to produce horizontal components of shear stress and strain using instantaneous modal superposition. A simple dissipated energy-dynamic pore pressure relationship is used to model the development of pore pressure leading to liquefaction. The results show a rapidly developing zone of liquefaction which initiates at a depth of roughly 15 metres in the Port Island reclaimed soils.

References

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Published
1998-03-31
How to Cite
Davis, R. O., & Berrill, J. B. (1998). Energy dissipation and liquefaction at Port Island, Kobe. Bulletin of the New Zealand Society for Earthquake Engineering, 31(1), 33-50. https://doi.org/10.5459/bnzsee.31.1.33-50
Section
Articles

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