Abstract

Seemingly without damage at first glance, the new building near Kobe had its pile foundation extensively damaged by the Hyogoken–Nambu (Kobe) earthquake. A comprehensive plan for rehabilitation was successfully implemented to jack up and repair the foundation–building system. The experience gained from the project is vital for future rehabilitation of pile foundations damaged by extreme earthquake events. Simple 1‒D free‒field nonlinear analysis indicated large velocity and displacement of the ground surface on the side of the building that underwent large differential settlement, and 1‒D soil–pile–building interaction analysis showed consequently large response actions on the piles. Simple 1‒D response analysis can explain the nature of pile damage and differential settlement attributable to the local variation in soil conditions under the building. © 1997 John Wiley & Sons, Ltd.

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