Design of Curved Double Width Continuous Steel Truss Beam Bridge
The main bridge of the Changfu Highway Separated Interchange Bridge in Changshu City,Jiangsu Province was a-dopted with a(85+125+75.08)m three-span continuous through steel truss beam,which was arranged on two sides.The main truss was adopted with two main trusses and a triangular truss with vertical rods.The centre distance between the main trusses of a single bridge was 22.25 m.The main bridge plane was located on a circular curve with the radius of 6 496 m.Each main truss was set with three bending points at two middle support points and the centre of the middle span,ef-fectively reducing the widening width.The cross-section of the main truss of a single bridge was arranged in a parallelogram.The height of the inner and outer main truss members and the truss height was consistent.The height difference between the centre of the main truss was 40.5 cm.The main bridge was adopted with the push construction method to reduce the im-pact of the construction period on waterway navigation.The selection of the position of the main truss of this bridge and the treatment method for bending the node plate can provide a reference for the design of other similar projects.
curved continuous steel truss beamtriangular trussbend the node plateparallelogram section
万方数据
维普
