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Seismic Fragility of Existing Conventional Reinforced Concrete Highway Bridges

C.L. Mullen and A.S. Cakmak

NCEER-97-0017 | 12/30/1997 | 128 pages

About the Report:

TOC: The table of contents is provided.

Keywords: Fragility curves. Damage indices. Reinforced concrete bridges. Flexure. Finite element analysis. Nonlinear dynamic analysis. Nonlinear constitutive relationships. Box girder bridges. Highway bridges. Fiber models. Deck plate elements. Column elements. Meloland Road Overcrossing.

Abstract: This report establishes a framework for fragility analysis of typical short span continuous reinforced concrete highway bridges. The bridge selected for analysis is the Meloland Road Overcrossing located near El Centro, California, which is representative of a large class of two-span continuous bridges in California and other locations in the United States. A three-dimensional approach to modeling the damage response of reinforced concrete highway columns was used, which included fullscale column behavior under simultaneous and time varying action of axial forces and biaxial bending moments. The key parameters of the proposed column damage element were calibrated as was soil-structure interactions effects. The calibrated model was then used to construct an intensity - damage relationship and family of fragility curves for the example bridge. (Adapted from text).