Seismic Performance of Ancient Masonry Structures in Korea Rediscovered in 2016 M 5.8 Gyeongju Earthquake

Ancient masonry structures in Gyeongju, Korea, demonstrate remarkable seismic resilience, surviving numerous earthquakes for over 1300 years. A study analyzing the 2016 M 5.8 Gyeongju earthquake reveals that Cheomseongdae, an astronomical observatory, exhibits exceptional seismic performance due to its unique structural characteristics—such as well-compacted filler materials, rough interior walls, intersecting stone beams, and interlocking headstones. Dynamic centrifuge model tests confirmed these features contribute significantly to its stability, suggesting advanced seismic design technology in ancient Korean architecture. The research also systematically reviews seismic risk assessments of the Gyeongju Historic Areas, employing methodologies like GIS-based microzonation and subsoil engineering evaluations.

Park, H.-J., Ha, J.-G., Kim, S.-H., & Jo, S.-S. (2019). Seismic Performance of Ancient Masonry Structures in Korea Rediscovered in 2016 M 5.8 Gyeongju Earthquake. Sustainability, 11(6), 1565. https://doi.org/10.3390/su11061565