Performance Evaluation of RC Pier in Seohae Grand Bridge

摘要

The purpose of this study is to evaluate seismic performance of reinforced concrete pier columns in Seohae Grand Bridge, which is under construction in Korea. Since the bridge was designed before preparing the Korean seismic design specification, the bridge columns of hollow hexagonal section were designed and constructed with insufficient seismic reinforcement details such as longitudinal and transverse reinforcement lap-splices. In order to take the necessary measures to improve its seismic performance, experimental study was performed by small-scale test for the bridge columns. From the quasi-static test for small-scale column specimens, it was found that the reinforcement lap-splices reduce ductility. However, the lap-splices were not critical for overall behavior of the column if sufficient lap-splice-length was provided. The test results of failure mode, effective stiffness, ductility, dissipated energy, and equivalent viscous damping ratio are presented.