Abstract
The theoretical and numerical method on the underpinning ploblem, one of the temporary supporting systems, is studied in this paper.
The theoretical explanation by using the matrix analysis method is introduced and applied to the supporting problem temporaily loaded on the pile foundation consisting of grouppiles.
This method is characterized by using the calculated results of F. E. M. as the displacement property of foundation.
In addition, some examples of underpinning by using this numeric method are analyzed and studied compared with the measured results of above examples.
