Out-of-plane in situ cyclic testing of unreinforced stone masonry walls with distributed loads

摘要

The present paper reports an in situ experimental test campaign carried out on existingbuildings, in order to investigate the seismic behaviour of traditional masonry walls subject toout-of-plane loads. For the testing proposes, an experimental test setup based on a selfequilibratedscheme was developed and optimized to be applied in situ in two specimens onoriginal and strengthened conditions. The obtained results are presented and carefullydiscussed namely from the reinforcement solutions’ efficiency point-of-view, as well ascompared to previous experimental data obtained for the same type of masonry walls.Additionally, a simplified linearized displacement-based procedure was adapted in order tocharacterize the nonlinear force-displacement relationship for unreinforced traditionalmasonry walls and to analytically predict the experimental test results. The confrontationbetween the experimental and the analytical results are presented and discussed.