Reason For The High-speed Railway Track Equipment Disease Analysis And Renovation

There are many special reasons to cause track equipment disease in high speed railway. It is difficult to renovate radicaly and may forms many times repeatedly occurred track equipment disease. It also costs a lot of manpower and time. The effect is often poor. This paper analysis disease case through on Zhengzhou-Xi’an high-speed rail Xi’an Railway bureau section of the public works equipment for more than five years since the maintenance management process. We found that current disease treatment scheme has many defects. Therefore, it is necessary to disease repair key aspects of whole attendant research. To treatment before and after the field inspection data were compared and analyzed. Researching on the main diseases of rail equipment causes, wheel rail contact geometry relationship, identify induced disease and key technology for remediation of the proposed recommendations for improvement, which will to track defects rectification process rational allocation of labour. Improving fine tuning quality and efficiency. Eliminating the orbital diseases effectively. To ensure the high-speed railway track irregularityand reduce maintenance cost of high iron produced important guiding significance and practical value.Using large number of effective models with dynamic detection of inspection history and in the same section subgrade frost heaving and creep of girder and pier settlement observation data. We do a comprehensive analysis to track quality index TQI of the development process which changes in the short-term development of Zhengzhou-Xi’an high-speed rail equipment with local characteristics. To maintain the basic stability of the whole and only a small amount of local section variation. But the change is very slow. Then based on some local amplitude overrun waveform and adjust the simulation comparison chart analysis. It is relatively easy to cause local amplitude overrun is height, direction,changeable rate and hemodynamics. Respectively on the project caused local amplitude overrun of causes has carried on the thorough analysis and according to Zheng Xi high-speed operation of 250(not included)-350km/h speed grade of CRH2 and CRH3 and CRH5, CRH380 A, CRH380 AL etc. Type EMU analysis that due to the body self stabilizing different, shake the car also each are not identical. But inertial sway car mainly occurs in the high speed ballastless turnout and the vertical curve.For Subgrades frost crack seepage, creep deformation bridge piers sunk trigger excessive Track Quality Index. Local amplitude overrun cause by height, direction, gauge change rate and dynamic index. High-speed shaking phenomenon often occurs in inertial ballastless turnout and vertical curve. Through the specific case of dynamic waveform before and after the renovation and inspection by tim inspection comparison.Thorough study on remediation measures, we summed up the “figure table”(inspection waveform, rail fine dynamic measuring linear chart, the track geometry size adjustment table) simulation adjustment method to solve the track quality index exceeded and the local amplitude overrun. Taking the switch of gauge widening and circular vertical curve comparison and cutting method is used to solve the high-speed turnouts and vertical curve of inertial sway car diseases a series of high-speed rail equipment disease remediation countermeasures.