Safety Evaluation of Seismic Behaviour of the Bill Emerson Memorial Cable-Stayed Bridge
Mechanical behavior of cable-stayed bridges subjected to earthquakes is one of the key issues in bridge engineering. In this study, a three-dimensional Finite Element (FE) model of the Bill Emerson Memorial Cable-stayed Bridge is developed and validated with data recorded during the M4.1 earthquake event on May 1, 2005. The model takes into account the geometric nonlinear properties associated with cable sagging and the soil-foundation-structure interaction in the approach span of the bridge. Sensitivity analyses were conducted to understand the effects of various modeling parameters and conditions. The calculated natural frequencies and mode shapes are in good agreement with the measured data. The bridge structure was verified to behavior elastically as designed according to the original performance criteria except that the out-of-plane behavior of the two H-shaped towers is near yielding under a scaled-up design earthquake from the recorded ground motions.
D. Yan and G. Chen, "Safety Evaluation of Seismic Behaviour of the Bill Emerson Memorial Cable-Stayed Bridge," Proceedings of the Structures Congress 2009: Don't Mess with Structural Engineers - Expanding Our Role, American Society of Civil Engineers (ASCE), Jan 2009.
The definitive version is available at http://dx.doi.org/10.1061/41031(341)21
Civil, Architectural and Environmental Engineering
Keywords and Phrases
Missouri; Bridges; Cable-Stayed; Earthquakes; Finite Element Method; Seismic Effects
Article - Conference proceedings
© 2009 American Society of Civil Engineers (ASCE), All rights reserved.