Two real scale five-story reinforced concrete frame buildings were tested in BRI in order to evaluate damage of reinforced concrete structural members such as beams, columns and walls for strength-based design buildings. A series of experimental works show that secondary RC walls could have improved seismic performance for damage reduction by changing configuration and rebar arrangement. This strength enhancement with ductile detailing is one of the easiest and most economical solutions to reduce seismic damage. The paper describes current research efforts on resilient reinforced concrete structures in Japan focusing on complete residual flexural crack profile simulation (crack spacing, width, and length). The paper introduces numerical procedures using FEM analysis introduces and compares the computed results to the real scale experimental results. The information will be helpful to evaluate cost of repair after earthquake damage.
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