Hi, I just have one question to ask regarding the use of WALLAP for a deep excavation problem. WALLAP allows the users to reduce the wall stiffness in order to model the long-term stiffness of the wall at the end of the excavation. I am just curious to know how WALLAP carries out the analysis with the new wall stiffness. Since all forces are in equilibrium following the previous stage analysis - out-of-balance force is zero, I would expect that just changing the wall stiffness would not lead to any more displacements in the solutions. But WALLAP does gives large additional displacement based on the updated wall stiffness. I searched through WALLAP's manual but it doesn't say how this is done within the program. I suspect the program just recalculate the whole thing again from the beginning with the new stiffness but would like to know whether there are other reasons for that.
Thanks a lot!
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