Application of the structural mechanics method to calculate the internal force sharing ratio of anchor cable and anti-slide pile for retaining structure

Abstract

The anchor cable anti-slip pile is a generally-used retaining structure for landslide control. The anchor cable is anchored in the rock mass below the sliding surface, so the anchor cable can be regarded as redundant constraint. Therefore, the anchor cable anti-slide pile are multiple statically indeterminate structures. As one of the basic methods for solving statically indeterminate structures, the structural mechanics force method takes anchor cable tension as the basic unknown quantity, through considering the balance condition, deformation condition and physical condition, the axial force of anchor cable was solved, and then the proportion of landslide thrust shared by anchor cable and anti-slide pile was further determined. In this paper, the structural mechanics method is used to solve the internal force of anchor cable and anti-slide pile, and it is suggested that the load sharing ratio between anchor cable and anti-slide pile can be estimated according to 30%~40%.

Keywords

• anchor cable
• anti-slide pile
• load sharing ratio
• the structural mechanics method
• imbalance thrust force method
• the residual landslide thrust