A multiblock unilateral concept for passive control of prestressed bridges

  • Authors:

  • G. E. Stavroulakis;A. Michalopoulos;P. D. Panagiotopoulos;E. Zacharenakis

  • Affiliations:

  • Institute of Applied Mechanics, Department of Civil Engineering, Carolo Wilhelmina Technical University, D---38106 Braunschweig, Germany;Institute of Steel Structures, Department of Civil Engineering, Aristotle University, GR---54006 Thessaloniki, Greece, GR;Institute of Steel Structures, Department of Civil Engineering, Aristotle University, GR---54006 Thessaloniki, Greece GR;Department of Civil Engineering, Technological Educational Institute of Crete, GR---71500 Iraklion, Greece, GR

  • Venue:
  • Structural and Multidisciplinary Optimization
  • Year:
  • 2000

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Abstract

A new design concept for large bridges, which is based on an integrated hanging-cable and deck-structure system with unilaterally connected blocks and which is stabilized by prestressed cables is proposed in this paper. Potential advantages of the new design concept with the traditional method of cable-supported and suspension bridges are discussed. The novel passive control system is based on a two-level prestressing cables mechanism where permanent (dead) loads are relieved by the first level prestressing cables and moving loads together with excessive displacements are supported by the second level prestressing system. A simplified solution method is proposed which is suitable for preliminary civil engineering design.