Site specific Ground Response Analysis at South - Western part of Addis Ababa
| dc.contributor.advisor | Tensay Gebremedhin (PhD) | |
| dc.contributor.author | Birkit Solomon | |
| dc.date.accessioned | 2025-04-25T08:26:23Z | |
| dc.date.available | 2025-04-25T08:26:23Z | |
| dc.date.issued | 2024-12 | |
| dc.description.abstract | Ethiopia's capital, Addis Ababa, is situated near the edge of the Ethiopian Rift System, an area with moderate seismic activity. The city is vulnerable to earthquakes due to its geographic location. Because the characteristics of soil affect seismic wave propagation, amplification and attenuation, studying site effect is crucial for earthquake investigations in a particular location. For this purpose, a two-dimensional ground response analysis is performed using soil data from geotechnical investigation reports and multi-channel analysis of surface waves (MASW) to characterize the soil profile of selected sites at five sub cities that are found on the South – Western part of Addis Ababa and to determine how these locations affected the input ground motions. Considering the local geology and tectonic circumstances, the input ground motions are selected from the PEER ground motion database. Ground response analysis is conducted using the input soil data and five ground motions at the ground surface in the PLAXIS 2D software. And based on the results and shape file of the study area, Seismic micro zonation map is produced. The results of the analyses indicate that the selected sites have a significant potential for amplifying ground motions. This amplification is notably higher than current local code specified predictions but near to NEHRP provisions. Therefore, it is recommended to revise the local code spectra and conduct a detailed investigation and mapping of the rest six sub cities of Addis Ababa to ensure accurate seismic risk assessment and improve safety measures. | |
| dc.identifier.uri | https://etd.aau.edu.et/handle/123456789/5371 | |
| dc.language.iso | en_US | |
| dc.publisher | Addis Ababa University | |
| dc.subject | Ground Response Analysis | |
| dc.subject | Site | |
| dc.subject | Ethiopian Rift System | |
| dc.subject | seismic activity | |
| dc.title | Site specific Ground Response Analysis at South - Western part of Addis Ababa | |
| dc.type | Thesis |