This paper proposes a rock bolt insertion method in order to improve the seismic performance of existing castle masonry walls. The development of a new "monitoring rebar," which is composed of the above rock bolt with attached strain gages to evaluate the health of castle masonry walls by grasping the load share conditions inside walls by measuring the deformations of the rock bolt, is described and its application is evaluated. The effects are verified and measurement data are obtained by conducting small-scale centrifuge model tests and full-scale in-situ experiments.
The results show that deformations of castle masonry walls are restrained by the proposed strengthening method under unstable conditions and degradation can be measured by the "monitoring rebar."
