2021 Volume 77 Issue 2 Pages I_385-I_390
Recently, precast concrete structures have been highly demanded for the purpose of labor reduction at construction sites. Superstructure with precast concrete member has many advantages because it can reduce the time of field work affected by many factors such as ocean wave. The authors have proposed a pre-stressed joint construction method for port pier superstructure by using post-tensioning prestress to assemble the superstructure members which are transported from factory to construction site. This method is expected to save labor and improve construction efficiency because it does not require cast-in-place concrete of the superstructure. However, the shear capacity of pre-stressed joints has not been studied yet. In this study, loading experiments are conducted to evaluate the performance of this method. As a result, it was confirmed that the shear capacity of pre-stressed joints was higher than the frictional force assumed in the existing evaluation formula.
