Modern day bridge foundations are often designed for the maximum loading
condition on a single member and each following foundation member often follows the
same design. A 4-pile and a 2-pile foundation system were analyzed with an upperbound
plasticity model in an attempt to approximately represent the system capacity. A
sensitivity analysis was performed to measure the change in the ultimate system capacity
by altering the parameters used to define individual pile capacities. The load and the
resistance are considered to be normally distributed and are each characterized by a mean
and a standard deviation. A first order reliability method was used to measure and
account for any system redundancy in the foundation system by predicting a probability
of failure based on the load and resistance of the system. Based on the most heavily
loaded pile and the analysis performed on the 2-pile and 4-pile foundation systems, the
probabilities of failure are lower for the system than for the single pile. This would bring
reason to state there is some measurable redundancy in the basic systems analyzed where
these systems would once be considered to be non-redundant systems. / text
| Identifer | oai:union.ndltd.org:UTEXAS/oai:repositories.lib.utexas.edu:2152/21951 |
| Date | 05 November 2013 |
| Creators | Hall, Taylor Quinn |
| Source Sets | University of Texas |
| Language | en_US |
| Detected Language | English |
| Format | application/pdf |
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