Tragic Bhuj Earthquake

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1.1General
Amongst all the natural hazards, earthquakes have the potential of causing greatest damages. Earthquakes are caused by differential movements of the earth’s crust. The result of these movements is well-known ‘ground shaking’ that can lead to significant damage and/or collapse of buildings, infrastructure systems (e.g. dams, roads, bridges, viaducts etc.), landslides when soil slopes looses their cohesion, liquefaction in sand and destructive waves or ‘tsunamis’ in the maritime environments.
India has had number of the world’s greatest earthquake in the last century. In fact 50% area in the country is considered prone to damaging earthquakes [4]. After every damaging earthquake in India, a lot of coverage is given in newspapers and on TV to the issues of earthquake safety. Different government agencies announce plans towards this. Many experts are interviewed on TV channels to share their wisdom on ways to mitigate such disasters. Numerous conferences are held all over the country. The public feels reassured that the problem of earthquake safety will now be taken care of, until the next such earthquake when we realize that not much really got done since the last event. In the backdrop of the tragic Bhuj
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Total three gravity designed buildings 8, 12 and 16 storied having symmetrical plan and identical floors located in zone V are designed using SAP2000. Designed buildings are evaluated using nonlinear static pushover analysis in X and Y directions. For pushover analysis guidelines laid by ATC40 and FEMA356 are followed. Based on performance objective operational (B) to immediate occupancy (IO) performance level is targeted at. Performance point is found out by using capacity spectrum method. Since above all three buildings failed to give desired target performance level that is operational (B) to immediate occupancy (IO), hence buildings need to be
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