SEISMIC ANALYSIS OF MULTISTORY BUILDINGS SUBJECTED TO SYNTHETIC MOTIONS COMPATIBLE WITH DESIGN SPECTRUM ACCORDING TO VIETNAMESE STANDARD

Currently, TCVN 9386: 2012 Standard is adopted in the design practice of civil engineering in Vietnam. For structural seismic analysis as well as seismic risk assessment, usually, engineers prefer the response spectrum method rather than time history analysis due to the lack of ground motion records in the past. The method using the response spectrum cannot be used to exactly predict the nonlinear response of a structure subjected to earthquakes. However, it is a more suitable method for design purposes due to the fact that it could predict the maximum response of a structure based on the response spectrum. In this study, we used a random simulation method to promulgate the ground acceleration in accordance with seismic conditions in Vietnam. Subsequently, the ground acceleration was adjusted to match the response spectrum according to the current Vietnam standard. Numerical simulations were then conducted to evaluate the structural response and seismic vulnerability of a building subjected to the proposed ground motion by using different analytical methods.