Paper “Gradient-based algorithmic cross-frame cross-section optimization for skewed steel I-girder integral abutment bridge deck placement response” has appeared in Engineering Structures. This paper presents a first trail to adopt gradient-based structural optimization strategies in bridge design and analysis to achieve cross-frame cross-section optimization for skewed steel I-girder bridges with integral abutments (IABs). The optimized design reduced peak flange lateral bending stress for skewed IABs during deck placement, while reducing total steel usage for cross-frames. Practical considerations, such as design efficiency, computation costs, as well as strength and stability requirements under construction and in-service loading conditions, were discussed in the paper.…

Papers “Field and Numerical Evaluations of Static and Dynamic Live Load Response in Skewed Steel I-Girder Bridges with Stub and Integral Abutments” and “Evaluating Support Representation and Modeling Strategy for Skewed Steel I-Girder Integral Abutment Bridges during Deck Placement” have appeared in the Journal of Bridge Engineering. The “Field and Numerical Evaluation” paper documents a portion of project ICT R27-194 (“Evaluation of Spatial and Temporal Load Distribution in Steel Bridge Superstructures”). This paper reports static and dynamic live load response of two skewed steel I-girder bridges with different abutment conditions under field tests and associated numerical simulations. The “Evaluating Support Representation” paper documents…