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Investigation on mechanics performance of cable-stayed-suspension hybrid bridges

  • Zhang, Xin-Jun (College of Civil Engineering and Architecture, Zhejiang University of Technology)
  • Received : 2007.04.18
  • Accepted : 2007.11.04
  • Published : 2007.12.25

Abstract

The cable-stayed-suspension hybrid bridge is a cooperative system of the cable-stayed bridge and suspension bridge, and takes some advantages and also makes up some deficiencies of both the two bridge systems, and therefore becomes strong in spanning. By taking the cable-stayed-suspension hybrid bridge, suspension bridge and cable-stayed bridge with main span of 1400 m as examples, the mechanics performance including the static and dynamic characteristics, the aerostatic and aerodynamic stability etc is investigated by 3D nonlinear analysis. The results show that as compared to the suspension bridge and cable-stayed bridge, the cable-stayed-suspension hybrid bridge has greater structural stiffness, less internal forces and better wind stability, and is favorable to be used in super long-span bridges.

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