Deterministic and Probabilistic Simple Model for Single Pile Behavior under Lateral Truck Impact
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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.
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