Abstract
This chapter describes factors to consider in developing a methodology to establish capacity-design criteria for force-controlled elements in seismic force resisting systems. The focus is on capacity-designed connections in steel concentrically braced frames, but the concepts can be generally applied to other structural components and systems. The proposed methodology is an adaptation of the load and resistance factor design (LRFD) methodology, where the load effects are defined by the force demands from yielding components of the system. Demand and capacity factors (analogous to load and resistance factors) are determined considering the variability in inelastic earthquake demands and component capacities, along with a target reliability. The target reliability is based on a comprehensive collapse risk assessment that is evaluated using nonlinear dynamic analyses and benchmarked to the collapse safety of modern code-conforming buildings.
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Victorsson VK, Deierlein GG, Baker JW, Krawinkler H (2012) The reliability of capacity-designed components in seismic resistant systems, J.A. Blume technical report 177, Stanford University, Stanford, CA
Acknowledgments
The authors would acknowledge the contributions of the late Professors Allin Cornell and Helmut Krawinkler to this research. Both of these individuals were involved in the early stages of this project and generously shared their knowledge and expertise. The authors would also acknowledge the advice and encouragement of Tom Schlafly and others on the specification committee of the American Institute of Steel Construction, who reviewed this project. The financial support of the American Institute of Steel Construction, the National Science Foundation (CMMI-1031722, Program Director M.P. Singh), and the Blume Earthquake Engineering Center at Stanford University is also acknowledged. The findings and conclusions made in this paper are those of the authors and do not necessarily reflect the views of the sponsors.
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Victorsson, V.K., Baker, J.W., Deierlein, G.G. (2014). Reliability Considerations in the Seismic Capacity Design Requirements for Force-Controlled Components. In: Fischinger, M. (eds) Performance-Based Seismic Engineering: Vision for an Earthquake Resilient Society. Geotechnical, Geological and Earthquake Engineering, vol 32. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-8875-5_29
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DOI: https://doi.org/10.1007/978-94-017-8875-5_29
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