抄録
The behavior of combined soil nail-anchor walls with various heights is analyzed and a wall design procedure is introduced such that maximum allowable deformation and minimum acceptable factor of safety are achieved. Charts of nail lengths are first determined for various cases such that the required factor of safety is obtained. These are similar to the charts published by the FHWA for the design of soil nail walls. These charts are then extended through the determination of the deformation corresponding to each case. Further extension is then made by including soil nail walls with various combinations of anchors. Verification of the results is provided by comparing deformations of actual instrumented combined walls with the results obtained from the current study. Design charts are then constructed for selecting various combinations of soil nail and anchor lengths such that stability and deformation requirements are satisfied. These charts may be used to select a combination for which project cost is minimized.
