Time History Analysis of Irregular Shape Building

An earthquake is the result of a rapid release of strain energy storied in the earth crust that generates seismic waves. Structures are vulnerable to earthquake ground motion and damage the structures. In order to take precaution for the damage of structure due to ground motion, it is important to know characteristic of ground motion. The most important dynamic characteristic of earthquake are peak ground acceleration, frequency content, and duration. These characteristic plays predominant rule studying the behavior of structure under the earthquake ground motion. A liner time history analysis overcomes all the advantages of modal response spectrum analysis, provided non-linear behavior is not involved. This method requires greater computational efforts for calculating the response at discrete times. One interesting advantages of such procedure is that the relative signs of response quantities are preserved in the response histories. This is important when interaction effects are considered in design among stress