Comparitive Study of Different Seismic Analysis in Case of Pounding

Seismic pounding between two adjacent structures is a phenomenon which is observed during earthquakes which may cause structural damages as well as architectural damages. Pounding is defined as the collision between two buildings or different parts of the same building to serve damage or sometimes complete collapse. Actually, the separation distance of many buildings is fails to accommodate their relative motions, so building vibrating out of phase and collapse. Among the possible structural damages the seismic induced pounding has been commonly observed phenomenon. This project entitled “A Comparative Study of Different Seismic Analysis in case of pounding” aims at studying the seismic gap between the buildings by static and dynamic analysis in ETABS Non-Linear software and also giving a comparison between them. A parametric study is conducted to investigate the minimum seismic pounding gap between two adjacent structures by response Spectrum analysis for medium soil and El-Centro Earthquake recorded excitation are used for input in the dynamic analysis on different models. By analyzing the two structures using Equivalent Static, Response Spectrum and Time History Analysis, according to SRSS method the minimum separation gap between two adjacent buildings to avoid pounding is 0.0380m, 0.0275m and 0.138m respectively. As a result of comparison between the three methods of analysis it is observed that the maximum displacements obtained by the dynamic analysis are higher than the static analysis.