The Design And Research Of Continuous Welded Rail On Reinforced Concrete Arch Bridge

The technique of Continuous welded rail on bridge has been applied on railway bridge at home and abroad. This article designs and checks that BaoCheng railway QingJiang 2# reinforced concrete arch bridge paves continuous welded rail. Reinforced concrete arch bridge is a especial structure of railway bridge. There is less studies on continuous welded rail on arch bridge at home, so we need embedded studies its portrait force and Stability. The paper's primary work as follows:1. It Establishes reinforced concrete arch bridge and pier incorporate model and calculates and analyzes rail portrait force. The result indicates: when the temperature rises, contractility is most in the middle of span, press is most in extremity, the point that girder displacement is equal to rail displacement is in around the middle of span, flex pull is small; the body of arch's resist flex rigid is big, the corner of the end of the girder is small. There will be bigger displacement and yield force on the effect of load; When calculate the brake force, leave out of account the direction of the load. The surface of rail can impel girder and rail to produce prodigious celerity displacement and yield force because the body of the arch is high, the span is big, the portrait liner rigid of the pier is big. The most snap is in the end of the girder. When take into account contractility, the value of snap of arch is smaller than the simple beam.2. It Discusses the check method of continuous welded rail on bridge structure intension, and analyses the production condition and position of the most portrait affixation force of the QingJiang 2# arch bridge continuous welded rail on bridge. It calculate the most disadvantage combination of flex stress, contractility, yield force, brake force and temperature force.3. It studies the stability of continuous welded rail on reinforced concrete arch bridge. It use unify formula and unequal wavelength formula to calculate the stability and admit temperature rise of the continuous welded rail on the QingJiang 2# arch bridge. The result indicates: unequal wavelength's result is comparatively small, but discrepancy is small, both of the means have...