Traditional houses form an integral part of the unique landscape of Bhutan. Unfortunately, these structures are highly vulnerable to seismic activities, but there are only limited research works in this field. Thus this paper deals explicitly on the development of seismic technology for strengthening such random rubble masonry structures in mud and cement mortars. This study’s basis is the full-scale quasi-static test conducted on two-storied residential houses designed based on a representative sampling of traditional houses for unreinforced and retrofitted types. The proposed seismic intervention is the mesh-wrap retrofitting technique. Furthermore, we developed a numerical model based on the Finite Element Method and conducted non-linear pushover analyses, which was capable of simulating the experiment. Finally, this study presents the first-of-its-kind conventional fragility curves for traditional Bhutanese residential houses, generated based on the Capacity Spectrum Method.
Keywords: Stone masonry, Retrofitting, Experimental works, Finite Element Method, Fragility curves.