الفهرس 
STEP- BY- STEP INTEGRATION METHODOnly 14 pages are availabe for public view
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Abstract
The present research work deals with an investigation of the effect
of bridge/vehicle interaction on the dynamic response of bridges. Special
emphasis is placed upon the dynamic behavior of multi-span bridges, where
the spans are treated as simply supported spans. The analytical model used
in this study is based on the interactive solution of the bridge structure
together with the moving vehicle in tbe time-domain. A substructuring
technique is used to reduce the computational time and effort, and a
combined stiffness matrix is developed so as to include both bridge and
vehicle models. A review of several existing bridges in Egypt was made,
and ”Al-Fangary” bridge was selected as a base for the bridge data to use in
this study. A parametric study was performed using the developed analytical
model to determine the effect of various factors including the effect of
vehicle vibrations resuJting from the consecutive passage of the vehicle on
several unconnected spans, in addition to the effect of the upward and
downward slopes at the bridge entrance and exit respectively. Other factors,
such as vehicle speed, and bridge and vehicle damping effects were also
considered. The results obtained were used to develop usefuJ
recommendations concerning the expected dynamic amplification for
displacements and bending moments acting on the different spans of multispan
bridges under the effect of moving vehicles.