The Theory and Practice of
CAPACITY AND PERFORMANCE BASED DESIGN OF BRIDGES
THE FUTURE OF EARTHQUAKE ENGINEERING
Speaker: Ashraf Habibullah
Performance-based design is a major shift from traditional structural design concepts and represents the future of earthquake engineering. Rather than focusing on strength and stress, this approach addresses how to accommodate the displacement demands imposed by earthquake motions so that bridge structures can remain operational or repairable after a major seismic event. Capacity design concepts using energy dissipation and ductility are used to determine and control acceptable levels of earthquake damage. Pre-planned yielding of certain members of a structure during an earthquake does not necessarily constitute failure but can actually help to save the rest of the structure. Special devices, such as dampers and sliders, can also be used to dissipate energy and allow larger displacements with smaller forces. Numerically efficient Ritz vector based nonlinear time-history analysis methods will be discussed, as well as nonlinear static procedures particular to certain types of bridge structures. Special attention will be given to near-fault and fault-crossing cases. In this technology-packed seminar, Ashraf will present the theory and practical application of nonlinear analysis and performance-based design in terms and analogies that are very familiar to the practicing structural engineer. Attendees will leave the seminar empowered with a clear understanding of this new technology.
more information on www.csiamerica.com/news/performance-based-design-of-bridges-istanbul
About Ashraf Habibullah, S.E.
Ashraf Habibullah, Registered Civil and Structural Engineer, is President and CEO of Computers and Structures, Inc. He founded CSI in 1975. Today, CSI is recognized globally as the pioneering leader in the development of software tools for structural and earthquake engineering. The software is used by thousands of engineering firms in over 160 countries. CSI products are also recognized as the standard tools for research and education worldwide and CSI has donated software to thousands of universities for teaching purposes. Through these donations, CSI has helped to ensure that the technology necessary to produce seismically-sound structures reaches everyone. Ashraf has led the development of CSI’s products for nearly four decades and has been very active as a consultant, researcher and educator, conducting international courses and seminars on analytical techniques and numerical methods used in software for Structural and Earthquake Engineering.