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

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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

Suggestions

Happy Home sheaf home

TENX FOR :-

• GOOGLE IMAGES• IS : 1893 YEAR 2007• IS : 875 YEAR 2007• DR. R.P.RETHALIYA

THANK YOU

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