블록식 보강토옹벽의 붕괴사례 분석

Abstract

Analysis on a Collapsed Mechanically Stabilized Earth Wall Jang, Hohun Advisor : Prof. Kim, Daehyeon Department of Civil Engineering Graduate School of Chosun University Recently, mechanically stabilized earth(MSE) walls are gradually replacing conventional concrete retaining walls for reasons of economy, expediency of construction, and aesthetics. However, mistakes in design and construction of MSE walls have resulted in many troubles such as failure of MSE walls, horizontal deformational breakdown of facings, and so forth during or after construction. In this study, the collapsed section of MSE walls with consideration for a field study, design drawing and experimental data were reviewed. Also, the construction process until the collapse of MSE walls was numerically modeled, and this study tried to analyze the fundamental causes of the collapse. As a result, firstly, the types of design drawing and structural bill were confirmed to be different from each other. Secondly, the investigation revealed that the bad-quality backfill were responsible for the collapse. Lastly, the process of installing a soundproof walls at the top of the MSE walls confirmed that geogrids in 0.3m and 0.9m depth were cut, and additional structure reviews were missed.