钢轨低接头的产生与整治（Generation and renovation of low rail joint）.docVIP

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钢轨低接头的产生与整治（Generation and renovation of low rail joint）.doc

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钢轨低接头的产生与整治（Generation and renovation of low rail joint） The rail joint production and low remediation.Txt26 choose self-confidence, is easy, is the choice of its fame in front, is to choose the forces in front of distraction confident sail go with head high and chest out, breaking the flow forward, the shows style fighting. Discussion on the production and renovation of low rail joint I. understanding and understanding of low rail joints: The rail in the track to form continuous beams directly bear the load transmitted by the train wheels provide a continuous, smooth and least resistance of rolling surface, and rail joints due to structural damage the continuity of rail, reduce the bearing strength of the track. Increase of train resistance and impact force, within the scope of the rail joint under the load of ballast sleeper, the stress and deformation were multiplied, and the rail joint is the weak link in orbit, its stress is complex, the structure is weak, the maximum load impact force of rail joint is low the joint of common diseases, so to strengthen the maintenance of rail joint is very important. Two causes of low rail joint: 1 bad tamping: (1) joint tamper is not solid. Because the joint tamping is not solid, under the dynamic load, the joint settlement causes the splint deflection, and the impact of the wheel set on the joint is more and more big, and the wheel end is pendulous and the elasticity is weakened. What followed was the collapse of the ballast bed at the joint and the destruction of the pillow base. The low joint formed and became more and more serious. (2) when the road is stopped, the plug of a pillow is fast, and the joints of the two sleepers are hard and soft, which makes the rail ends of the rail uneven, and increases the impact of the wheel on the joint. (3) road tamping joint with small waist, because of the joint and small waist tamping, the number of picks is not good, resulting in small waist joint low, resulting in track irregularit