Fabrication and Construction Procedures of a Totally Precast Concrete Counterfort Retaining Wall System for Highways

In this paper, a totally precast concrete counterfort retaining wall system is proposed for highway and bridge applications. This system provides several advantages over conventional methods, such as reduced construction time, cost, and environmental impacts. The system is composed of a precast counterfort wall that is connected to a base slab through headed anchors. The components are cast offsite and transported to the construction site for final assembly. The proposed system requires a unique method of construction. Accordingly, this paper details the fabrication and construction procedures required for the proposed system to accelerate the on-site erection process. In the use of this system, the general guidelines for the fabrication and construction of the totally precast counterfort retaining wall system are presented to the contractors. The system’s components can be fully assembled and set in place in approximately 2 hours.