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Project Description
On June 26th 2019, in the context of the Pan American and Parapan American Games of Lima 2019, the Armendariz viaduct was opened to traffic. The new link is part of a major road interchange and was built with the main purpose of improving the road network connectivity and traffic in the Miraflores and Barranco districts. The travel time from the north of Lima to Bajada Armendáriz, which was previously 30-50 min, has since been reduced to 5 min.
The total length of the viaduct is 357 m, divided into seven spans with a maximum length of 35 m. Supported on 12 double-shaft piers of 1.5 m in diameter, the superstructure consists of a continuous post-tensioned voided deck slab. The deck slab has five circular voids of 90 cm in diameter, and a variable width between 8.90 m and 11.40 m. The piers are supported on a 2 m deep pile cap with four piles. The piles have a 1.20 m diameter and a depth of 20 m and 11 m under piers and abutments, respectively.
Design/Construction Approach
The viaduct is seismically isolated by means of 24 high damping seismic isolators (lead rubber bearings), which provide additional safety in the case of a seismic event, according to the importance category of the structure.
With the use of the seismic isolation devices, a seismic performance is achieved which guarantees the absence of damage and the immediate return to normal use of the viaduct after the seismic event.
Through innovative and efficient design of structures, such as the Armendariz viaduct, Pedelta continues improving its role as an innovative company contributing to the progress of engineering and the improvement of people’s quality of life.
