EARTHQUAKERESISTING
BUILDINGSTRUCTUR
What is Earthquake…?• An earthquake (also known as
a quake, tremor or temblor) is the result of a sudden release of energy in the Earth's crust that creates seismic waves. The seismicity, seismism or seismic activity of an area refers to the frequency, type and size of earthquakes experienced over a period of time.
Sources of Earthquake
• Tectonic plates• Volcanic eruption• Nuclear explosion
Plate Tectonics
Earthquakes pice point
Seismic Zone
• Earthquakes effects on Buildings• Earthquakes effects on structure• Earthquakes effects on humans• Earthquakes effects on reservoirs & dams
Effects of Earthquakes
Earthquakes is effects onBuildings structure
Earthquakes effects on structureEarthquakes effects on humans
Why we are Design Earthqake Resisting of Building Structures
?
What is Earhquake Resistance Building?
• Building designed to prevent total collapse, preserve life, and minimize damage in case of an earthquake or tremor. Earthquakes exert lateral as well as vertical forces, and a structure's response to their random, often sudden motions is a complex task that is just beginning to be understood.
Techniques to resist Earthquake
• Active & Passive system• Shear walls• Bracing• Dampers• Rollers• Isolation• Light weight material• Bands• Others
Active System
Active control systems are devices integrated with real-time processing evaluators for improved service and safety.
Passive System
Passive control systems are conventional devices to resist or absorb the energy produced during Earthquake.For example: Viscous Dampers
Inertial Forces
• STORY DRIFT• BREAKAGE OF GLASS OR PARTITIONS• HORIZONTAL EARTHQUAKE FORCE DEFORMS THE STRUCTURE
Shear Walls
• Resist;• Gravity Loads• Lateral Loads
Shear Wall
• March 3, 1985 Earthquake (Chile) Shear Wall performed very well
Bracing
Bracing
Cross Bracing
Cross Bracing
Dampers
Dampers
Liquid Tuned Mass Damper
Light weight material
• In recent times, many new systems and devices using non-conventional civil engineering materials have been developed, either to reduce the earthquake forces acting on a structure or to absorb part of seismic energy.
Rollers
Isolation
Isolation Bearing
Base Isolation
Base Isolation mechanism
Base Isolation mechanism
Bands
Waste Tire pads
Waste Tire Pads
Avoid Hammering & Pounding
Suggestions
• Avoid weak column and strong beam design
• Provide thick slab which will help as a rigid diaphragm
• Provide cross walls which will stiffen the structures
• Provide shear walls in a symmetrical fashion
• Increase in the transverse (Shear) reinforcement.
• Horizontal lintel band should be provided• Revision/ updation of building code of
Pakistan• The building must be regular and symmetrical
in shape• Reinforcing bars should be provided at the
corners and the junctions of the walls
Suggestions
Happy Home sheaf home
TENX FOR :-
• GOOGLE IMAGES• IS : 1893 YEAR 2007• IS : 875 YEAR 2007• DR. R.P.RETHALIYA
THANK YOU
THE END
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