Midas Expert Engineer

Ying Tan

Professional Associate | Senior Bridge Engineer at HDR

(Raleigh, NC)


About Ying Tan

Ying has over twenty-five years of structural industry experience. Specialized in complex bridge design and analysis and complex modeling. She also has one year of teaching experience as an instructor at NC State University and two and a half years of experience in structural engineering testing labs. 



Skill & Expertise

#SegmentalBridges #TransitStructures #RSI #VSI #ComplexModeling 

Professional Projects

Expert Webinar: State of the Art & Current Practice on Rail-Structure Interaction in North America

Ying Tan & John Lobo from HDR examined the current methods for performing rail-structure interaction (RSI) analysis and the acceptance criteria prescribed through various transit agencies and national guidelines in the United States and Canada. They compare these methods and criteria to the European code. A numerical analysis compares the results of two different methods for a simplified structure. The results show that the method is deeply entwined with the design philosophy and acceptance criteria and that acceptance criteria must be chosen strictly based on the methods adopted for analysis. Many transit agencies in the United States and Canada provide inadequate guidelines on how rail-structure interaction analysis should be performed or provide a mix of requirements from European and North American methods, which can result in overly conservative structure design. This paper highlights the need for a clear national guideline that prescribes the methods of analysis and corresponding acceptance criteria and recommends an approach to address the gap in current methods in the United States and Canada.

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