This study presents the restoring force characteristics and seismic reinforcement effect when traditional mud walls are reinforced with steel bar braces. First, cyclic horizontal loading experiments are carried out on 1P and 2P mud walls equipped with steel bar braces, and the obtained restoring force characteristics are studied. The bolt holes in the gusset plates at the end of the steel bar braces are loose holes, and the braces become effective after the mud wall yields. Using the obtained restoring force characteristics, a calculation of response and limit strength is carried out for SDOF models.
Yamada et al. (Thu,) studied this question.