High speed railway ballastless track subgrade settlement repairing quality detection and control method

Abstract

The invention discloses a high speed railway ballastless track subgrade settlement repairing quality detection and control method and relates to the technical field of repairing quality detection and control method of a railway track. The method comprises the following steps: respectively mounting a hydraulic pressure difference transducer and a vibrating wire sensor on relevant positions of a track board and a standard track board of a repaired subgrade section, recording parameters collected by both of the sensors in initial state, and taking the sensor parameters on the standard track board as a standard; adjusting grouting speed, pressure and grouting position according to parameter changes of the hydraulic pressure difference transducer and the vibrating wire sensor during repair; and finally detecting grouting repair quality by adopting ground penetrating radar, and detecting the geometric shape of the track by adopting a track detection trolley. The method is simple to operate, accurate in measurement and capable of meeting the requirements of short repair time and tense construction period in skylight time, thus ensuring high speed railway ballastless track subgrade repair quality, prolonging the service life and improving the operation safety.

Description

technical field [0001] The invention relates to the technical field of railway track repair quality inspection and control methods, in particular to a high-speed railway ballastless track roadbed settlement repair quality inspection and control method. Background technique [0002] The high-speed running of high-speed railway and passenger dedicated line needs to provide a high smoothness and stability under the rail foundation. Since the high-speed railway passenger dedicated line is very sensitive to longitudinal uneven settlement, it is necessary to repair the subgrade in time for settlement. [0003] Whether it is subgrade settlement control or track slab grouting construction, it is bound to have an impact on the elevation of the track slab, and once the elevation exceeds the limit, it will be an irreversible process. This requires real-time monitoring of the rail surface elevation during the disease remediation process, and adjustment of the construction parameters of ...

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Problems solved by technology

[0004] When lifting the track slab by grouting, the selection and arrangement of the jacking point is the key to whether the lifting can be realized. When lifting the slab, the force of each jacking point and the bending moment of the overall structure in the horizontal and vertical directions will be involved at the same time. Whether the load at the jacking point is too large or the bending moment exceeds the limit, it will cause damage to the base plate and eventually lead to the failure of lifting the plate; in the process of grouting, the uniformity and pressure of the grouting will also cause the track plate The uneven force will seriously affect the service life of the track slab. Therefore, during the repair process, the internal stress of the track slab should be monitored in real time

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