Deterministic and Probabilistic Simple Model for Single Pile Behavior under Lateral Truck Impact
Abstract
In this study a simple and fast method and computational code to analyze the behavior
of a single post under a vehicle impact for any soil type, any vehicle mass, any truck
velocity and any post size is developed. The final outcome of this research is a simple
model with an estimation of each parameter. In order to contribute uncertainties in
parameters and the model, a probabilistic model is also designed, and finally a fragility
estimation is made by using these models. The research covers 4 main studies: Performing
13 full and medium scale tests with full investigation of soil properties by means of in situ
and lab tests, conducting 49 detailed numerical simulations with LS-DYNA with
different range of parameters to build a database of results for calibrating the simple
model, developing and calibrating a finite difference model for single pile subjected to
impact load using dynamically modified Kelvin-Voigt model for soil behavior, modifying
the simple model with Bayesian approach to build a probabilistic model and generating
fragility estimates based on the probabilistic model. The outcome of the research is a
probabilistic simple method to analyze a single pile under lateral impact for any soil and
any geometry condition with limitation of elastic behavior of pile during the impact.
Citation
Mirdamadi, Alireza (2014). Deterministic and Probabilistic Simple Model for Single Pile Behavior under Lateral Truck Impact. Doctoral dissertation, Texas A & M University. Available electronically from https : / /hdl .handle .net /1969 .1 /153281.