This study purposed the validity of the total stress evaluation method by core sampling from steel bridges. Core-pulling experiments using a full-scale steel girder and a loading device was performed, and a measurement method to evaluate the stress from the strain generated around the circular hole using the basic theory of the drilling method was examined. The result was possible to calculate stresses close to those occurring in the member by using a measurement method that takes thermal effects into account. In addition, the problems of the measurement method were mentioned, and the possibility that the basic theory of the drilling method can be applied to the stress evaluation by core sampling was suggested.
