Chilina Bridge over the Chili River in Arequipa. Balanced cantilever segmental bridge in high seismicity area

Abstract

<p> Chilina Bridge is a 562 long prestressed concrete viaduct with two 11.3 m wide decks in the city of Arequipa (Peru) with span scheme: 100+157+142+102+61 m. Free Cantilever Method construction is used. High seismicity in the area reaches Peak Ground Acceleration of 0.6 g and involves special analysis and detailing. The new bridge will become the largest urban bridge in Peru when completed. Construction started in March 2013 and will be finished by the end of 2014.</p><p> Seismic analysis is done according to AASHTO specifications for a 1000 year return period Earthquake. Seismic displacement demands are as high as 90 cm and 45 cm in transverse and longitudinal direction.</p>

Preserving Heritage Riverine Bridges: A Hydrological Approach to the Case Study of the Grau Bridge in Peru

“…The Fierro Bridge (Figure 3b) is now pedestrian only. Thus, in 2014, in view of the urban growth and aging of the bridges, the largest urban bridge in Peru of contemporary times was built, called Chilina Bridge (Figure 3d), whose material is prestressed concrete 562 meters long with piers of 21.1 m, 28.9 m, 35 m and 39.7 m, and seismic analysis based on an earthquake with a return period of 1000 years [24]. The Grau Bridge (Figure 3c), located in the center of the city, is 62.5 m long, 10 m wide, and 17.3 m high from the riverbed, supporting more than 10,000 vehicles per day, including light and heavy vehicles.…”

Preserving Heritage Riverine Bridges: A Hydrological Approach to the Case Study of the Grau Bridge in Peru

“…The Fierro Bridge (Figure 3b) is now pedestrian only. Thus, in 2014, in view of the urban growth and aging of the bridges, the largest urban bridge in Peru of contemporary times was built, called Chilina Bridge (Figure 3d), whose material is prestressed concrete 562 m long with piers of 21.1 m, 28.9 m, 35 m, and 39.7 m, and seismic analysis based on an earthquake with a return period of 1000 years [33]. The Grau Bridge (Figure 3c), located in the center of the city, is 62.5 m long, 10 m wide, and 17.3 m high from the riverbed, supporting more than 10,000 vehicles per day, including light and heavy vehicles.…”