Publication Abstract

Proceedings of the 26th Annual Members' Conference, 2001, St. Louis, MO "Designing Deep ~ Building Deep", (DFI)

Effects of Permanent and Temporary Loads on Allowable Bearing Capacity of Piles Subjected to Negative Skin Friction
Mohammad T. Izadi

Piles are, often, used for transferring load from the super structure through soft consolidating strata onto relatively stiff uncompressible soils. Downward movement of the soft soil strata develops negative skin friction and dragload around the pile shaft, with time. Traditionally the induced dragload is considered in determining the pile bearing capacity. On the other hand, field measurements on instrumented piles show that negative skin friction is reduced by the magnitude of applied live load plus dead load and dead load. The proposed method, substantially, increases the allowable load bearing capacity of piles compared to calculated values by the traditional methods.

 article #937; publication #56 (AM-2001)