CAUSES OF LIQUEFACTION DAMAGE ON SIDEWALKS AND DAMAGE REDUCTION EFFECT DUE TO DRAINAGE [Translated paper]

抄録

Centrifugal model experiments were conducted to investigate the change in pore water pressure after liquefaction under conditions where impermeable roadbeds of different thicknesses were adjacent to each other like a roadway and sidewalk. If the water film formed at the bottom of the impermeable layer during the dissipation process of excess pore water pressure due to liquefaction is continuous between the roadway and sidewalk areas, the water pressure exceeding the overburden pressure may act on the sidewalk area where the impermeable layer is thinner. This water pressure caused the ground surface of the sidewalk area to rise due to heaving. In the case where a drain was installed in the roadbed of the sidewalk area, little uplift of ground occurred.