Dynamic excitation of bridges can be a major issue particularly
with railway bridges, slender pedestrian structures or bridges in
seismic areas. We’ve developed advanced assessment techniques for
noise and vibration, so as to optimise scheme designs and mitigate
noise and vibration in existing structures.
Modelling of ground borne vibrations for Taiwan
Science ParkCreating advanced software solutions for
technically challenging projects is part of Mott MacDonald’s
culture of continuous improvement. Our suite of award-winning
software for solving dynamic problems has been benchmarked against
a large database of dynamic monitoring results. The development of
highly efficient modal superposition techniques provides rapid
analysis of complex transient dynamic problems and the use of
graphic tools to visualise accelerations spatially from complex
dynamic behaviour has proven to be a very effective way of
communicating to clients.
On the West Coast Main Line in UK we undertook site monitoring of
over 200 rail bridges under current traffic, together with dynamic
analysis of 500 bridges. The study was used to assess the
suitability of the existing bridges for carrying high speed
trains.
Another example of our work in this area is on the Taiwan High
Speed Rail project, where we carried out a study to assess the
effect of ground borne vibrations on the very sensitive Taiwan
Science Park, which is adjacent to the new 300 kphrail line.
