Techno Press
Techno Press

Structural Engineering and Mechanics   Volume 14, Number 6, December 2002, pages 733-738
DOI: http://dx.doi.org/10.12989/sem.2002.14.6.733
 
Transverse earthquake-induced forces in continuous bridges
Nazzal S. Armouti

 
Abstract     [Full Text]
    A simplified rational method is developed to evaluate transverse earthquake-induced forces in continuous bridges. This method models the bridge as a beam on elastic foundation, and assumes a sinusoidal curve for both vibration mode shape and deflected shape in the transverse direction. The
principle of minimum total potential is used to calculate the displacements and the earthquake-induced forces in the transverse direction. This method is concise and easy to apply, and hence, offers an attractive alternative to a lengthy and time consuming three dimensional modeling of the bridge as given by AASHTO under its Single Mode Spectral Analysis Method.
 
Key Words
    earthquake forces; bridge; transverse forces; seismic design; continuous bridge.
 
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