| Title |
Structural Behavior of Non-Composite Basement Walls during Temporary Earth-Retaining System Dismantling |
| Authors |
유진우(Yu, Jin-Woo) ; 김태한(Kim, Tae-Han) ; 양근혁(Yang, Keun-Hyeok) |
| DOI |
https://doi.org/10.5659/JAIK.2026.42.7.311 |
| Keywords |
Basement Exterior Wall; Composite Basement Wall; Earth Retaining Structure Dismantling; Structural Analysis; Allowable Bending Moment |
| Abstract |
This study examines the current use of composite basement walls through field surveys of recent construction projects in Korea and
analyzes the characteristics of earth pressure acting on basement walls during dismantling stages. Step-by-step structural analyses were
conducted to account for changes in support conditions caused by strut removal, allowing a quantitative evaluation of the structural
vulnerability of non-composite basement walls. In addition, the structural performance of composite basement walls was assessed by
comparing allowable bending moment increases based on variations in the tensile reinforcement ratio. The results show that earth pressure
during dismantling stages is generally lower than at-rest earth pressure. However, bending moments under temporary cantilever conditions
significantly exceed the design bending moments for the final condition. In contrast, composite basement walls demonstrate improved
structural performance, as the retaining wall continues to provide structural support during dismantling. These findings emphasize the need
to consider the structural role of temporary earth-retaining systems throughout the dismantling process to ensure the safety of basement
exterior walls during construction. |