United States Department of Transportation
[PDF-9.70 MB]
Details:
-
Creators:
-
Corporate Creators:
-
Corporate Contributors:
-
Subject/TRT Terms:
-
Publication/ Report Number:
-
Resource Type:
-
Geographical Coverage:
-
Corporate Publisher:
-
Abstract:Pile group foundations are used in most foundation solutions for transportation structures. Rigorous and reliable pile design methods are
required to produce designs whose level of safety (probability of failure) is known. By utilizing recently developed, advanced, two-surface
plasticity constitutive models, rigorous finite element analyses are conducted. These analyses are for axially loaded single piles and pile
groups with several pile-to-pile distances in various group configurations installed in sandy and clayey soil profiles. The analyses shed
light on the relationships between the global response of the pile-soil system (development of shaft and base resistances) and the
behavior of local soil elements (e.g., shear band formation). The influence of the group configuration, pile-to-pile spacing, soil profile,
and pile head settlement on the group effects are studied. Mechanisms of pile-soil-pile interactions in pile groups are revealed. Pile
efficiencies for individual piles and the overall pile group are reported for use in pile group design. The instrumentation, installation, and
static and dynamic testing of a closed-ended, driven pipe pile in Marshall County, Indiana is documented. The test results along with two
other case histories are used to verify the new Purdue pile design method. Probabilistic analyses are performed to develop resistance
factors for the load and resistance factor design, LRFD, of pile groups considering both displacement and non-displacement piles, various
soil profiles, and two target probabilities of failure. The pile design equations, pile group efficiencies and resistance factors together form
the LRFD pile design framework. Two step-by-step design examples are provided to demonstrate the LRFD pile design procedures for
single piles and pile groups.
-
Format:
-
Funding:
-
Collection(s):
-
Main Document Checksum:
-
Download URL:
-
File Type:
