Nowadays tuned dampers are the essential part of
high-rise buildings and many others “dynamically
sensitive” engineering structures. They are widely
used in the world’s highest buildings for the damping
of wind and seismic induced mechanical vibrations
and improvement of building dynamic behavior. As a
result, higher and more flexible engineering structures
can be built.
Main idea of vibration damper is that damper mass
oscillates in counter phase to main structure. As a
result amplitudes of main structure oscillations are
reduced due to summation with damper oscillations.
So called tuned mass dampers – dampers where
main mass is solid body elastically or viscoelastically
connected with the main structure – are more widely
distributed in engineering structures [31]. Connection
stiffness is specially adjusted (tuned) to the particular
structure vibration frequency to obtain the damping
effect. The most straightforward type of tuned mass
damper – a heavy sphere suspended on a cable at the
top of the tower. This type of damper is widely used in
high-rise building.
In the last decades, the idea of tuned liquid dampers
(TLD) got an extension and development. Liquid –
mainly water – is used as damping mass in this type of
dampers. TLD is a cheap, simple in construction and
environmental friendly damper type. Such dampers
also can be used as an additional water reserve for the
building water supply and the fire-fighting systems.
The use of TLD in high-rise building started to
increase in the last decade. Main types and ways of
improvement of TLD are observed in consequent
sections.
high-rise buildings and many others “dynamically
sensitive” engineering structures. They are widely
used in the world’s highest buildings for the damping
of wind and seismic induced mechanical vibrations
and improvement of building dynamic behavior. As a
result, higher and more flexible engineering structures
can be built.
Main idea of vibration damper is that damper mass
oscillates in counter phase to main structure. As a
result amplitudes of main structure oscillations are
reduced due to summation with damper oscillations.
So called tuned mass dampers – dampers where
main mass is solid body elastically or viscoelastically
connected with the main structure – are more widely
distributed in engineering structures [31]. Connection
stiffness is specially adjusted (tuned) to the particular
structure vibration frequency to obtain the damping
effect. The most straightforward type of tuned mass
damper – a heavy sphere suspended on a cable at the
top of the tower. This type of damper is widely used in
high-rise building.
In the last decades, the idea of tuned liquid dampers
(TLD) got an extension and development. Liquid –
mainly water – is used as damping mass in this type of
dampers. TLD is a cheap, simple in construction and
environmental friendly damper type. Such dampers
also can be used as an additional water reserve for the
building water supply and the fire-fighting systems.
The use of TLD in high-rise building started to
increase in the last decade. Main types and ways of
improvement of TLD are observed in consequent
sections.
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