Abstract
For wide excavations the tied-back system has proved a particularly economical way of securing the walls of excavations. The design of a tied-back flexible wall is a complex operation which depends on a knowledge of the interaction between the anchors, the ground and the wall. In the present study, a practical numerical procedure taking into consideration this interaction, is introduced.The primary purpose of the undertaken analysis was to examine, by means of this procedure, the dependence of the anchor force on some of the primary variables, such as the wall flexibility, anchor stiffness, embedment depth and initial stress conditions, controlling the performance of the multianchored walls. The computed anchor reaction values were compared with those predicted by means of the usual semi-empirical rules.The paper findings, based upon a large number of analysed situations, are, in our opinion, useful for engineering evaluation of the over-all problem of the anchor systems behaviour.
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