Reliable Slope Stabilization with DYWIDAG Strand Anchors: The Large-Scale Project Costa Verde del Callao
The large-scale project Costa Verde del Callao is being constructed between the district of La Punta in the seaport of el Callao and the coastal district of Chorrillos southwest of Lima, Peru. A new, 5.8km long expressway is being built in this area to improve the connection with Jorge Cháves Airport and to reduce travel times from La Punta to Chorrillos to 25 minutes.
The new road includes 3 lanes per direction and is built directly along the coast on a man-made landfill. Within the scope of the project, connecting roads are being built for the Santa Rosa and Haya de La Torre roads that consist of access ramps and viaducts.
Comprehensive slope stabilization was required in order to build these viaducts. The subcontractor Mota-Engil awarded DSI Construction Peru the contract for supplying permanent, Type 4-0.6" DYWIDAG Strand Anchors for the long-term stabilization of the sidehill cuts.
A total of 60 DYWIDAG Strand Anchors were installed in 4 layers to tie back the slopes at both viaducts. 49 DYWIDAG Strand Anchors with 4 load cells were installed in the sidehill cut for the Haya de la Torre Viaduct. 11 DYWIDAG Strand Anchors and 1 load cell were required for stabilizing the Santa Rosa Viaduct. The permanent strand anchors had lengths of 14.5-19m.