Abstract
Considering that one of the most important issues in urban excavations is the interaction between excavation and adjacent buildings, it is always crucial to study the behavior of the excavation system and its adjacent structures. Today, many methods are used to protect the stability of the excavations and to provide desired safety. One of these various methods is brick stair wall, which is used in some projects due to its characteristics such as its cost-effectiveness and proper function. Therefore, in this paper, the effect of using this method as the excavation supporting structure on the stability of the excavation wall and its role in reducing the deformation created in the wall and the surrounding ground, using Fast Lagrangian Analysis of Continua (FLAC), is discussed. The results show that the amount of deformation parameters of excavation and adjacent building constantly increase as the excavation depth and building weight increase or soil density decreases. In addition, the numerical simulations indicates that applied surcharge on the adjacent area of the stair wall (caused by the adjacent building weight) has the main effect on the damage criteria.
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