In order to increase the construction productivity, it is required to utilize precast concrete members at construction sites. In the construction of superstructures of port piers, the utilization of precast members may conduce the increase of productivity by shortening the construction work and ensuring the quality of concrete structures. Moreover, the construction site safety may be also improved by reducing the amount of work especially for marine construction sites. In this paper, the authors propose a new construction method for port piers utilizing precast concrete members.
In this method, all precast concrete members are manufactured in the factories and carried to the construction site, while the pile head members and the beam members are connected by prestressing to reduce the weight of the superstructure. Though there are many strong points in this method, some technical issues exist. In this study, to address these issues, 1/4-scale specimens were used to examine the flexural capacity of the pile connection and the shear capacity between member connections, and real-scale specimens were also used to examine the workability considering the construction error. In addition, the advantage of the proposed method was confirmed with the lower construction cost, the effect of labor saving and the less emission of CO2.