The document discusses earthquake engineering, focusing on the design and construction of earthquake-resistant structures to minimize seismic risks. It highlights techniques such as active mass damping and sill anchoring to counteract seismic forces and improve building safety. Additionally, it addresses the importance of loss estimation in planning and designing resilient infrastructure in the face of earthquakes.

1. a tour of INNOVATION
introducing
EARTHQUAKE
ENGINEERING

2. What are we talking about?
We have features for every step of the way
Earthquake
Engineering
Our model
and ideology
Earthquake
Resistance

3. EARTHQUAKE ENGINEERING
Design, organize, and construct

4. Earthquake engineering is the scientific field
concerned with protecting society, the natural and
the man-made environment from earthquakes by
limiting the seismic risk to socio-economically
acceptable levels.
Getting Started

5. ObjectivesofEarthquake
Engineering
The main objectives of Earthquake
Engineering are:
I. To see, the potential consequences of strong
Earthquakes on urban areas and civil
infrastructure.
II. Design, construct and maintain structures to
perform at Earthquake exposure up to the
expectations and in compliance with building
codes.
III.To create Earthquake-resistant buildings for
almost all soil types present around us.
IV.To directly connect technology with the safety of
construction.

6. History of Earthquake
Resistance
Construction
Earthquake resistant construction has
long been practiced in several
countries around the globe, and they
all follow various techniques to it.
We will be concentrating on the
technique named, Active Mass
Damping.

7. ACTIVE MASS DAMPING
Computations of mass required to sway a building with respect to the earth movement.

8. It’s not just about the CONSTRUCTION but strengthening
THE BASE.

9. Swaying Mechanism
for areas where the
base is weak: Active
mass damping
Usually used in the
marshy parts of the globe,
where the base of the
building cannot be
trusted with the strength
and protection of that
construction.

10. How Active Mass Damping works?
• For buildings in the tropical
region, where the ground sets
down during the rainy seasons,
the base cannot be trusted for a
big building. In such cases, no
mechanism can be fit to the base
of the building. Rather a swaying
ball, with the weight same as the
building is attached to the top of
the structure, as shown in the
picture below. The metal ball
sways opposite to the motion of
the earth.

11. MASS DAMPER

12. Sill-anchoring Technique
• Sill anchoring is initiated by construction of a wooden
base was a building which is provided the correct shock
resistance by tightening the wooden sill with bolts.
They are a part of active shock control devices which
physically move the base to keep up with the sudden
changes due to seismic forces.
• This method of anchoring sill plates does keep the
boards attached to the foundation during an
earthquake, but it fails to help the structure as a whole
absorb and withstand the forces of seismic shock.

13. SIL-ANCHOR MECHANISM

14. What about the resistance systems
we’re yet to mention?
They are same too.

15. Seismic Loading
• Seismic loading means application of an
earthquake-generated excitation on a
structure (or geo-structure). It happens at
contact surfaces of a structure either with the
ground, with adjacent structures, or
with gravity waves from tsunami.

16. Vibration control and Classifications
• Seismic vibration control is a set of technical means
aimed to mitigate seismic impacts in building and non-
building structures. All seismic vibration control devices
may be classified as passive, active or hybrid where:
• passive control devices have no feedback capability
between them, structural elements and the ground;
• active control devices incorporate real-time recording
instrumentation on the ground integrated with
earthquake input processing equipment
and actuators within the structure;
• hybrid control devices have combined features of active
and passive control systems.

17. Prevention from severe Earthquakes
Building elevation control is a valuable source
of vibration control of seismic loading. Pyramid-
shaped skyscrapers continue to attract the
attention of architects and engineers because such
structures promise a better stability against
earthquakes and winds. The elevation configuration
can prevent buildings' resonant amplifications
because a properly configured building disperses
the sheer wave energy between a wide range of
frequencies.

18. Bridge between concepts
and the model
Broadcast and compress for seamless delivery

19. »The model talks about the
designing and functioning of a real
time environment of earthquake-
resistant architecture.
»Both Sill anchoring technique and
active mass damping are
preventive methods to control the
destruction of both heighted and
grounded buildings.
The Real Connection:

20. ?
But wait…
There’s More!
We will conclude with suggestions and techniques to estimate the earthquake loss!

21. Loss Estimation
• You can always develop to your best when you
know what you have lost. People learn from their
losses and plan a better future.
• Earthquake loss estimation is usually defined as
a Damage Ratio (DR) which is a ratio of the
earthquake damage repair cost to the total
value of a building. Probable Maximum
Loss (PML) is a common term used for
earthquake loss estimation, but it lacks a precise
definition.

22. THANK YOU!
WISHES AND REGARDS!