Earthquake Resistant Building and Disaster Management

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Earthquake Resistant Building and Disaster Management

Ilackiya. S,

II nd Year Civil Engineering.

Ck College Of Engineering & Technology JayaramNagar, Chellangkuppam, Cuddalore 607003.

EARTHQUAKE:

  • Earthquake occurs when to tectonic plates move suddenly against each other.

  • Earthquake is also known as temblors.

  • Waves spread from the epicenter, the point on the surface above the hypo centre.

  • During earthquake rock suddenly shift from their position and fracture occur on the earth surface.

  • Ground shaking from earthquake can collapse buildings, bridges, phone services etc.,

    TECHNIQUES TO RESIST EARTHQUAKE

  • Active and passive system

  • Shear walls

  • Bracing

  • Dampers

  • Rollers

  • Isolation

  • Light weight material

  • Bands

  • Others

    BASE ISOLATION

  • Introduce flexibility to the structure.

  • Building is rested on flexible pads (base isolators)

  • When earthquake strikes the building does not moves

  • It is suitable for hard soil only

  • In India base isolation technique was first demonstrated after 1993 killari earthquake.

    SEISMIC DAMPERS

    TYPES OF SEISMIC DAMPERS

  • Viscous dampers (energy is absorbed by silicone-based fluid passing between piston cylinder arrangement).

  • Friction dampers (energy is absorbed by surfaces with friction between them rubbing against each other).

  • Yielding dampers (energy is absorbed by metallic components that yield).

  • Viscoelastic dampers (energy is absorbed by utilizing the controlled shearing of solids).

  • Immediate steps must be taken to preserve our environment for our future generation.

    SHEAR WALL

  • Vertically oriented wide beams

  • It carries seismic loads down to the bottom of foundation

  • Provides large strength and stiffness to buildings.

  • Thickness generally varies from

    150mm to 400mm in high rise buildings.

    AVOID SOFT STOREY- CONTINUE WALLS IN GROUND STOREY

    LIGHT WEIGHT MATERIAL

  • The group called paksbab is to find the solution for all problems.

  • It is to protect and improve the lives of the poor, especially in seismic and temperature region.

  • It is simple load bearing design.

  • Made with locally fabricated compression moles and manually operated form jacks.

    BANDS

  • Strong column, weak beam

  • Horizontal band necessary through the masonry(a building with no horizontal linet band collapse of roof and walls).

  • Latur earthquake incident(a building with horizontal linet band in killari village: no damage).

    KEEPING BUILDING UP-RIGHT

  • When the quakes strikes the system dissipates energy in the building cores and exteriors.

  • The frames are free to rock up and down within fittings fixed at their bases.

  • Recently discovered technique of japan

  • It has found to be survived even in extreme earthquakes.

    QUALITY CONTROL

  • Regular testing of construction material at qualified laboratories.

  • For example, testing of bricks.

  • Period training of workmen at proffosional training house.

  • Onsite evaluation of the technical work.

    IS-CODES

  • Is 1893 (part i), 2002, indian standard criteria for earthquake resistant design of structures (5th revision)

  • Is 4326, 1993, indian standard code of practice for earthquake resistant design and construction of buildings (2nd revision)

  • Is 13827, 1993, indian standard guidelines for improving earthquake resistance of earthen buildings

    • Is 13828, 1993, indian standard guidelines for improving earthquake resistance of low strength masonry buildings

    • Is 13920, 1993, indian standard code of practice for ductile detailing of reinforced concrete structures subjected to seismic forces

      CONCLUSION

    • We civil engineers are here only to provide safety to public to lead their life happily.

Let us work together to build a cultu

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