Publication Abstract




Deep Foundations Journal Spring 1986, (DFI)

Long Term Behavior of Piles
Donald J. Murphy; Langan Engineering Associates, Elmwood Park, New Jersey James T. Dette; Dames & Moore, Cranford, New Jersey

Longevity of structural units, as compared to the planned useful life of a facility, always is a design consideration. Typical concerns include slow decay due to environmental factors, and changes in constitutive relationships governing the performance of the material involved. With respect to foundations, deterioration is precluded, mitigated or otherwise accounted for by assessing properly the ambient situation (sulfates, pH, stray currents, resistively) and providing safeguards, such as resistant construction products, oversizing, coatings, and/or cathodic protection. On the other hand, long term performance of the pile foundations, as affected by time dependent characteristics of the supporting soil or rock, can be predicted and controlled only with a synergetic coupling of analyses and field tests. The history of a project for which this approach was followed forms the basis for this paper.


 article #747; publication #42 (DFJ-1986)