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Structural Engineering and Mechanics
  Volume 14, Number 6, December 2002 , pages 733-738

Transverse earthquake-induced forces in continuous bridges
Nazzal S. Armouti

    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.
Department of Civil Engineering, University of Jordan, P.O. Box 712506, Amman 11171, Jordan

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