Seismic shock transmision unit
Major advances have been made in the field of bridge seismic
engineering in the past decade. Following major earthquakes in the
USA and Japan in the 1980s and 1990s, improved methodologies have
been developed and design codes have been updated. ‘Capacity
design’ is now standard practice, with key components ‘capacity
protected’ and repairable ductile behaviour permitted at defined
locations in the structure. Mott MacDonald has been at the
forefront of these developments and has undertaken projects in some
of the most highly seismically active areas of the world.
We have experience of using most modern seismic design codes for
bridges, including ATC-32 and EC8. Our seismic engineering
capabilities include dynamic analysis of structures and design and
detailing of components, analysis of soil-structure interaction
effects, including liquefaction of soils and kinematic effects in
pile groups in soft soils as well as the use of seismic isolation
devices and time-dependent shock transmission devices.
Kayang Bridge, KoreaOur recent bridge
projects in highly seismically active zones have included:
