Displacement Ductility Limits for Pile Foundations in Cohesionless Soils
Authors:
- 17 January 2017
- journal article
- research article
- Published by Taylor & Francis in Journal of Earthquake Engineering
- Vol. 22 (4) , 595-629
Abstract
The displacement ductility limit for seismic design of concrete piles is determined for the range of cohesionless soils expected in practice. The curvature ductility capacity associated with specified performance limit states, namely, the “serviceability” and “damage-control” limits, is determined based on the current provisions for confining steel. An analytical model is applied to assess the displacement ductility factor at the specified curvature ductility level. The investigated parameters include the soil stiffness, pile diameter, longitudinal reinforcement ratio, axial force level, and pile above-ground height. A set of design displacement ductility factors is recommended and verified to ensure the satisfactory seismic performance.Keywords
Funding Information
- National Science Council of Taiwan (98-2218-E-005-001)
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