Damage Based Design Approach for Structures Subjected to Earthquake and Other Dynamic Loads
George Lee Principal Investigator
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PI: George Lee, SUNY Buffalo<br/><br/>This project is aimed to explore a new design concept on damage based design for highway <br/>bridges to resist earthquake ground motions and other dynamic loads. This is a jointly supported <br/>pilot study by NSF (Division of Civil and Mechanical Systems) and FHWA (Turner Fairbanks <br/>Highway Research Center) to develop new bridge design principles and criteria for future <br/>applications. <br/><br/>In this pilot project, proof-of-concept study is carried out, both analytically and experimentally <br/>on a structural component by examining the damage initiation and accumulation process under <br/>selected input earthquake ground motions. The PI intends to show that seismic performance of <br/>bridges may not be satisfactorily described by using the quasi-static approach or based on <br/>behaviors under cyclic loading conditions. Many structural damages are results of combined <br/>failure modes (strength, deformation, stiffness, low cycle fatigue, etc.). They can only be <br/>understood based on principles of structural dynamics of M-DOF systems. Damage based <br/>performance criteria are important foundations for the Bridge of the Future.