A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
P16.01: Brief survey of the Chacao bridge girder design
The Chacao Bridge, 2750 m in length and the longest suspension bridge in South America, will link mainland Chile with the country's biggest island, Chiloé. The suspension bridge will include three pylons and will feature main spans of more than 1km in length (1055 m and 1155 m). The total length of the suspended steel deck is 2494 m and it weighs around 21000 tonnes. The deck runs from the South Pylon to the North Abutment. It is mainly supported by hangers and is supported by link‐shoes in line with the South Pylon and the North Abutment. The box girder design was chosen for its structural efficiency and excellent aerodynamic qualities. The deck is 3.27m high. The cross members are composed of diaphragms and lattice girders.
The aim of this article is to outline the methodology and regulations employed to verify the steel deck using different standards and recommendations (AASHTO LRFD 2012, FHWA, AISC, Eurocode).
AASHTO does not give clear recommendations for verifying this type of steel box‐girder. Most of the sections deal with relatively small structures using specific designs. For example, in the case of the buckling of stiffened plates, only a plate with a maximum of two intermediate stiffeners is discussed. It was therefore necessary to refer to standards other than AASHTO to resolve these problems. Complex analyses such as those concerning the fatigue or the buckling of stiffened plates were addressed by referring to simulation by the Finite Element Method (FEM).
P16.01: Brief survey of the Chacao bridge girder design
The Chacao Bridge, 2750 m in length and the longest suspension bridge in South America, will link mainland Chile with the country's biggest island, Chiloé. The suspension bridge will include three pylons and will feature main spans of more than 1km in length (1055 m and 1155 m). The total length of the suspended steel deck is 2494 m and it weighs around 21000 tonnes. The deck runs from the South Pylon to the North Abutment. It is mainly supported by hangers and is supported by link‐shoes in line with the South Pylon and the North Abutment. The box girder design was chosen for its structural efficiency and excellent aerodynamic qualities. The deck is 3.27m high. The cross members are composed of diaphragms and lattice girders.
The aim of this article is to outline the methodology and regulations employed to verify the steel deck using different standards and recommendations (AASHTO LRFD 2012, FHWA, AISC, Eurocode).
AASHTO does not give clear recommendations for verifying this type of steel box‐girder. Most of the sections deal with relatively small structures using specific designs. For example, in the case of the buckling of stiffened plates, only a plate with a maximum of two intermediate stiffeners is discussed. It was therefore necessary to refer to standards other than AASHTO to resolve these problems. Complex analyses such as those concerning the fatigue or the buckling of stiffened plates were addressed by referring to simulation by the Finite Element Method (FEM).
P16.01: Brief survey of the Chacao bridge girder design
Gogny, Eric (author) / Jakobsen, Svein Erik (author) / Mhamed, Aymen Cheikh (author)
ce/papers ; 1 ; 4740-4749
2017-09-01
10 pages
Article (Journal)
Electronic Resource
English
plastic , Buckling , Lemaitre , Interaction
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