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Project
Description
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The piers of this Victorian rail
bridge were found to be unable to take the
horizontal braking/traction forces of modern trains
entering and departing Neath Station. The
installation of CI LUDs between the deck and one
abutment was found to be the most cost-effective
solution. Expensive works to the cast iron piers and
existing bearings were avoided. CI designed and
supplied all fixings and also provided on site
supervision of installation.
As well as being skewed to the bank the deck was
curved in plan and was continuous across all four
spans, a total of 80 metres. One abutment was next
to a trunk road and had no strengthening
possibility, this resulted in all works being
carried out at the opposite abutment.
The articulation of the bridge prevented a fixed
bearing being provided at this strengthened
abutment, and therefore the designer specified LUDs
to transfer longitudinal forces at this point. Due
to the skewed relationship of the bridge and the
deck the LUD s are connected to the brackets using
ball joint connections rather than the conventional
clevis arrangement. |