• V.N.V.Syamala
• Sri.P.Venkateswara Rao
• Dr.S.R.K.Reddy

Earthquake is an endogenous natural hazard which occurs sudden without warning and destruction takes place during short duration of time. Most loss of life and property during an earthquake comes from total or partial collapse of buildings. While countries like U.S.A and Japan are constructing earthquake resistant structures, not much awareness has been created in developing countries like India on these aspects. Major metropolitan cities in India located in seismic regions, have registered enormous growth in population resulting in huge urban sprawl with major construction activities. When an earthquake occurs seismic waves propagate through different soil / rock media and when they reach the foundation, the structure vibrates. When structures are subjected to excitation, it is normally assumed that the structure is fixed at the base neglecting the influence of soil below it. This assumption leads to larger variation in the assessment of overall response under seismic loads. In the present study, a part of Amaravathi, capital of the state Andhra Pradesh, India, where many high rise buildings are expected to come in future, is chosen as study area. A nine storied building, with two soft stories; one cellar for parking and the other a function hall in fifth floor and when it rests on different types of soil, seismic analysis is carried out using MATLAB software for obtaining fundamental time periods, base shear and displacement parameters. The results are compared with the results of those obtained when fixed base condition is assumed. Results indicate that Soil – Structure Interaction influencies considerably on response parameters like base shears and displacements; particularly when structures built on loose soils.

Soil-Structure Interaction, Shear wave velocity, Spring constant, Time period, Base shear and Displacement

"Earthquake Response of Multi Storey Buildings Under Different Soil Conditions", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.123-127, May 2019, Available :http://www.jetir.org/papers/JETIRCY06019.pdf

"Earthquake Response of Multi Storey Buildings Under Different Soil Conditions", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp123-127, May 2019, Available at : http://www.jetir.org/papers/JETIRCY06019.pdf