Journal of the Korean GEO-environmental Society (한국지반환경공학회 논문집)

Korean Geo-Environmental Society (한국지반환경공학회)
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Behaviour of Shallow Foundations Subjected to Blast Loads and Related Liquefaction

  • Ritika, Sangroya (Department of Civil Engineering, Indian Institute of Technology Bombay) ;
  • Choudhury, Deepankar (Department of Civil Engineering, Indian Institute of Technology Bombay) ;
  • Park, Young Jin (Department of Civil and Environmental Engineering, Incheon National University) ;
  • Shin, Eun Chul (Department of Civil and Environmental Engineering, Incheon National University)
  • Received : 2017.07.25
  • Accepted : 2017.08.31
  • Published : 2017.10.01
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Abstract

In recent years, world has witnessed many man-made activities related to both above and underground blasts. Details on behaviour of shallow foundations subjected to blast loads and induced liquefaction is scarce in literature. In this paper, typical shallow strip foundation in saturated cohesionless soils subjected to both above and underground blasting have been simulated by using finite difference based numerical model FLAC3D. Peak particle velocity (PPV) has been obtained to propose critical values for which bearing capacity failure for shallow foundations with soil liquefaction can occur. Typical results for pore pressure ratio (PPR) for various scaled distances are compared to PPR values obtained by using empirical equation available in literature which shows good agreement. Critical design values obtained in the present study for PPV and PPR to estimate the scaled distance, bearing capacity failure and liquefaction susceptibility can be used effectively for design of shallow strip foundation in cohesionless soil subjected to both above and under ground blast loads.

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