Analysis Of The Shanghai-nanjing Intercity High-speed Railway Subsidence Regularity And Research On Subgrade Disease Treatment

:In recent years, with the development of our railway technology without a frantic jumble, the increment of mileage with speed up, and the improvement of traffic density, there is a significan change in railway subgrade load, involving distribution and the way of action of the internal stress. Especially new subgrade disease and old subgrade disease which has new content are appearing we must investigate their reasons and influence to analysis whether we need new treatment method and construction technology.After renovating to the subgrade settlement, its regularity must be changed.At the same time, we should analysis the regularity for judging the effects of treatment method.It let The railway sector construct new maintenance and repair mechanism consisted of daily maintenance and emergency disposal to avoiding subgrade disease.The thesis, combined with The Ministry of Railway’s science and technology project "the shanghai-nanjing intercity railway construction safety and the subsidence monitoring technology and the key techniques of high speed railway geological subgrade——research on analysis and countermeasure of shanghai-nanjing intercity railway subsidence control effection, take the thought of oretical research and field test by relying on the related research. Main contents and achievements:(1)Summarizes the type and classification of high grade railway subgrade diseases.Analysis the shanghai-nanjing intercity high-speed railway settlement law by the dynamic data.(2)Compare.the dynamic and static data of a typical section and analysis the treatment effect by taking Shanghai-nanjing intercity railway roadbed settlement disease treatment for example.(3)Introduces the maintenance and repair mechanism of high grade railway and its differences,and provides advice for establishment and emergent disposal team and reserves of emergent defect engineering measures.