ANALYSIS OF SOIL DYNAMIC RESPONSE DUE TO EARTHQUAKE IN INDONESIA

Abstract

Tangerang is one region in Banten Province Indonesia that has high earthquake potential because its located in the confluence zone of three continental tectonic plates that are continuously moving actively. Analysis of soil dynamic response is important as the first step in the earthquake-resistant structure's design. This study is aimed to give some descriptions of soil dynamics response results from a certain area due to seismic impulse. Seismic hazard analysis in this study used the Probabilistic Seismic Hazard Analysis (PSHA) method, while the earthquake acceleration profile and their response spectra have resulted from analysis of wave propagation theory with the assistance of NERA software. Based on the analysis result it can be concluded that the characteristics of the soil for the Tangerang region can be categorized as medium soil class. Earthquake acceleration value at bedrock was obtained in a range of values between 0.11g to 0.21g (g= gravity acceleration), while at the ground surface, the acceleration value was in the range of 0.18g to 0.38g. Based on the seismic zones, Tangerang Region can be included in the yellow zone according to the Indonesian Earthquake Map.