Failure Case Study of Tieback Wall in Urban Area, Korea

Abstract

In this study, a numerical analysis was performed to reproduce the sequential behavior of an anchored retaining structure in an urban area. The numerical analysis was verified through comparisons between the prediction and a field failure case. The emphasis was placed on the wall behavior and the location of the sliding surface based on the elasto-plastic method and the shear strength reduction FEM method. Through the comparison study, it is found that coupled analysis using the shear strength reduction method can be effectively used to perform the back calculation analysis to find a critical surface in the anchored wall structures, whereas uncoupled analysis by the elasto-plastic method can be applicable to the preliminary design of a retaining wall with a suitable safety factor.