The strain-based seismic verification method (SBSVM) is proved to be one of the most reliable design methods for steel bridge structures. In order to make the method applicable to a variety of complex bridge structures, powerful numerical analysis tools such as elastic-plastic large deflection static/dynamic analyses are needed. The initial lateral load method (ILLM) developed by the authors is found to meet the requirements. A full procedure of SBSVM with ILLM was presented with the use of the test results of steel large scale double arch-rib model structures in the previous paper. In this paper one of the original arch-rib models is modified to upgrade its seismic performance with BRBs, and the effectiveness is verified by the proposed SBSVM with ILLM.
