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Development of a new bridge construction method using suspension structures
Author(s) -
Kasuga Akio
Publication year - 2011
Publication title -
structural concrete
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.912
H-Index - 34
eISSN - 1751-7648
pISSN - 1464-4177
DOI - 10.1002/suco.201000002
Subject(s) - truss , structural engineering , bridge (graph theory) , span (engineering) , engineering , deck , suspension (topology) , truss bridge , composite number , beam bridge , civil engineering , materials science , composite material , mathematics , medicine , homotopy , pure mathematics
A unique suspension method developed over a period of more than 10 years produces a rational structure in the form of a single‐span composite truss bridge. For this structure, the steel truss and concrete deck are constructed on the spanning cables. During construction the horizontal forces of these cables are anchored into the ground, but after completion of the bridge the forces are transferred to concrete upper and lower chords as prestressing forces. A single‐span composite truss bridge of this type can be constructed without temporary supports or falsework. Using this method to bridge a deep valley produces benefits in terms of both construction costs and sustainability. A single‐span bridge requires less excavation than other bridge types, and utilizing a composite truss with this construction method can minimize the environmental impact of the construction.