Abstract
It is well known that earthquake-induced liquefaction can cause remarkable damage to buildings. A recent disaster involving liquefaction in Palu damaged buildings and infrastructure and has become the focus of many researchers. Detailed study of liquefaction is necessary in order to have a good understanding and direct mitigation efforts for the future. In this study, the liquefaction potential of sands with various grain size distributions was analyzed. The research was experimental using a laboratory sieve shaker. The samples were taken from six areas near important facilities. From this, the relationship between grain distribution and liquefaction potential could be plotted and this information could become an important input for liquefaction mitigation efforts in sandy sediment areas.
Highlights
Liquefaction occurs when the pore water pressure increases due to an earthquake until the effective stress became zero
Liquefaction potential is a function of several factors [1] : a) The Initial Relative density, b) Initial Pressure, c) Mean Grain Size, d) Maximum Shear Stress, e) Over Consolidation Ratio, f) Pore water pressure
The grain size distribution of soil can be determined by means of sieve analysis and can be determine the characteristics of soil
Summary
Liquefaction occurs when the pore water pressure increases due to an earthquake until the effective stress became zero. This decreases the interlocking between the grains was decreased and the strength of soil disappears. Water fills in the pores so that the characteristics of soil change from solid to liquid and loses bearing capacity. This results in damage to structures that can no longer be supported by the soil underneath them. Liquefaction potential is a function of several factors [1] : a) The Initial Relative density, b) Initial Pressure, c) Mean Grain Size, d) Maximum Shear Stress, e) Over Consolidation Ratio, f) Pore water pressure. Grain size distribution may be uniform, well-graded or gap-graded
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