Axial Resistance of Closed-Ended Steel-Pipe Piles Driven in Multilayered Soil

Abstract

AbstractIn order to better understand the response of driven, closed-ended, pipe piles subjected to axial loads and examine the performance of existing pile design methods, static and dynamic load tests were performed on a closed-ended steel pipe pile driven in a multilayered soil profile. The test pile was fully instrumented with electrical-resistance and vibrating-wire strain gauges, which enabled the determination of residual loads before sensors were reset and load-transfer curves for all loads applied at the pile head during the static load test. The ultimate base and limit shaft resistances of the test pile measured in the static load test and estimated from dynamic load tests are compared with estimates made using several cone penetration test-based (CPT-based) and property-based pile design methods. Two additional case histories are used to verify these design methods, most of which produce satisfactory estimates of pile resistance.