Technology reports of the Yamaguchi University

Back to Top

Technology reports of the Yamaguchi University Volume 3 Issue 4
published_at 1985-12

Arrangement of gravel pile for preventing liquefaction

Arrangement of gravel pile for preventing liquefaction
O-hara Sukeo
Yamamoto Tetsuro
fulltext
510 KB
KJ00004351070.pdf
Descriptions
The studies on a gravel pile method used for the prevention of liquefaction of saturated sand deposit during an earthquake have been carried out. To evaluate the pore pressure developed in the sand deposit 20m in depth, in which the gravel pile was installed, we solved the consolidation equation, using the finite difference method. The radii of the gravel piles 20m in length were taken 0.075, 0.15, 0.25 and 0.40m. The EL Centro earthquake record (NS-Comp., May, 1940) and five others were used as the base motion in these analyses. As a result, the optimum radius and the optimum distance, of the gravel pile, used in a design was determined in the relationships between the cost of construction and the limited value of pore pressure buildup.