Abstract
This paper summarizes the implementation and execution of a reasonably comprehensive set of finite element parametric studies to fill in knowledge gaps in the available experimental data pertaining to the hogging moment-plastic rotation behavior of steel and composite steel-concrete bridge girders. The paper highlights key requirements for proper finite element modeling of the behavior, outlines the design of the finite element parametric studies, and presents the important 'numerical test' results. Based on the finite element predictions, simple moment-rotation relationships are developed for use in design and rating of bridge structures.
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