Based on the cross-section and construction characteristics of existing BRBs

the concept of steel-lead mixed BRB is proposed in order to simplify the manufacture process

improve the capacity of dissipating energy and increase the stiffness in small deformation

and the construction is designed.According to the results of finite element analysis

the features and effect of dissipating energy of steel-lead mixed BRB is analyzed

a simple resilience model is obtained

and the hysteretic rules are summed up according to the ideal elasto-plastic material constitutive relation.By the theoretical analysis and FEA of different design parameters

the influence of steel-lead yield load ratio

lead shear plane length-width ratio

core segment width-thickness ratio and length of core segment on hysteretic characteristics of BRB is analyzed. The result of analysis shows that steel-lead mixed BRB provides larger stiffness to resist lateral deformation

has good effect in energy dissipation

and it is easy to manufacture and useful in engineering application.