This research looks to advance Methods for the Efficient Estimation of the Reliability of Post-Elastic High-Rise Wind-Excited Structures within a Performance-Based Design (PBD) for high-rise buildings.
“Current high-rise structural wind design is hampered by difficulties in efficiently modeling the post-elastic (non-linear) structural behavior of the system, therefore leading to challenges in estimating the reliability of these systems against severe windstorms. Indeed, the estimation of the reliability of a wind-excited high-rise structural system generally requires the time-history response analysis over large suites (possible thousands) of synthetic wind storms. The significant duration of typical wind storms, in the order of hours, as well as the complex phenomena that can cause inelastic failure, from low-cycle fatigue to ratcheting, makes this a computationally and theoretically challenging problem to solve. This research seeks to define a new paradigm for solving this problem through the development of probabilistic dynamic shakedown frameworks for the inelastic analysis of wind-excited structures. These methods have the potential to provide tools that enable the rapid evaluation, as compared to time-history integration, of the post-elastic reliability of a wide class of high-rise structures.” — Prof. Seymour Spence
|RESEARCH TITLE:||Methods for the Efficient Estimation of the Reliability of Post-Elastic High-Rise Wind-Excited Structures within a Performance-Based Setting|
|LOCATION:||University of Michigan, Ann Arbor Department of Civil and Environmental Engineering|
|PRINCIPAL INVESTIGATORS:||Prof. Seymour MJ Spence with Ms. Wei-Chu Chuang|
|MKA CONTRIBUTORS:|| Russell Larsen, P.E., S.E.
Kevin Aswegan, P.E.
Brian Morgen, Ph.D., PE., S.E.
|STATUS:||Scheduled completion mid-2018|