civiL structuraL anaLysis, design and documentation
Design of New Jubilee Bridge rites Ltd
Originally constructed in 1887, the Jubilee Bridge provides an
important railway link across the river hooghly. Although it is
still operational, the bridge has severe speed restrictions, so
Eastern Railway planned to construct a new one. It commissioned RI TES to carry out the detailed studies and recommend
a location for the New Jubilee Bridge.
RITES designed a 415.60-meter three-span rail bridge with
Montgomery Lock and Dam Lift Gate us army corps of engineers, pittsburgh, pa
continuous superstructure used — a first at Indian Railways.
The cost of the bridge including substructure is approximately
$30 million. RITES used Bentley’s STAAD. Pro for analysis of
the bridge superstructure and MXRAIL for alignment. These
tools provided an efficient and robust analysis engine whose
visualization tools, user-friendly interface, and customized
report generation efficiently modeled the superstructure model.
The US Army Corps of Engineers Montgomery Dam Lift Gate
in Pittsburgh, Pennsylvania, is the second-busiest inland port
in the nation. The gates were destroyed in a 2006 navigation
accident and the new engineering solution was predicated on
reusing the 1936-vintage gate-lifting machinery and ensuring
the new gates would be readily adaptable to a future new-generation hydraulic lifting system.
With the overall weight and center of gravity being a critical
factor in the design of the new gates, the use of 3D modeling
was essential. Bentley’s STAAD. Pro enabled a design that was
more efficient, robust, redundant, and resilient than the original.
The design included the reuse of existing hoist machinery and
its limited lifting capacity — constraints imposed by compatibility
with the geometry of the existing pier, alignment of lifting
points, and mating of embedded metal sealing surfaces
with sealing surface of the gate.