Structural Design of Double-Deck Steel Truss Girder Cable-Stayed Bridge with Single Tower & Double-Cable Planes
The Fenghe Bridge is located in Huzhou,Zhejiang.It is an important node of West Second-Ring Road across Longxi Portin Huzhou.The main bridge is a double-layer steel truss girder cable-stayed bridge with single tower and double cable planes,with a span of (90+128) m.The bridge adopts a semi-floating system with a tower height of 87 m.The main beam adopts 2 straight girder rectangular sections,which are easy to manufacture and install,good force performance and economical,and the Warren type triangular belly bar system,the girder width is 15.35 m,the girder height is 10.52 m,the main span joint length is 12.00 m,and the side span joint length is 9.00 m.This paper expounds the overall design parameters of the main bridge of the wind load bridge,and uses the finite element software to carry out the overall structural stress analysis and local node analysis.The design practice has proved that the single-tower double-cable planes double-deck steel girder cable-stayed bridge is not only safe and reliable in structure,perfect in function,but also transparent and beautiful.
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