Research On Subsidence And Renovation Of CangZhou West Railway Station Of BeiJing To Shanghai High-speed Railway

The high-speed railway in our country has boomsed rapidly, and our Beijing Railway Bureau’s miles have reached more than 2600 km. The Beijing to Shenyang high-speed railway and Beijing to Zhangjiakou high-speed railway will be opened in the few years later. With the large number of opened high-speed railway, how to maintain its high comfort and highly reliable working condition has been become a large challenge to the equipment companies. The Geological condition of the Area of Beijing Railway Bureau Presents diversity, and many rails pass through Huabei, Beijing and Tianjin,s subsidence funnel.Because of the subsidence of the earth’s crust,the trac will became more and more uncomfortable. The thesis relying on the project of "High-speed Railway Settlement and maintenance”, and basingon differences collapse at Cangzhouxi railway station of the Beijing to Shanghai high railway, we will study the subsidence and renovation of it.Through the analysis on the historical observational data, geological exploration Etc,we will use the finite element method to analysis and evaluate the effection the njection of foam.Firstly, researching on the method of maintenance to the High-speed Railway Settlement provided foundation for the research.Secondly, we must analyze the foundations the Subsidence’s area of the high speed railway of Beijing to Shanghai. Through the observation and calculation of the settlement, we can consider the development of this section is basic stability. Geological detection of the subsidence section by the GPR system,we can conclude: There is no smooth in the section of the turnout section, and the degree of the filling density of the subgrade is less than that of the other position; The local porosity between the graded broken stone and the interface of the earth fill layer; the enclosed layer of the shoulder is not full.Then,we analyse and calculate the effect of injection, and formulate the development of construction process and the control standards.By calculating, It will not cause the cracking of the supporting layer during the operation; at the same time, the injection of was not more than 10 mm once.Finally, we evaluate the effect of the injection.Through the method of " injection + fastening adjusting the Fastener" eliminates the longwave and shortwave irregularity in Cangzhou west station.After the renovation, the index of line equipment(including rail to wrong line) is obviously optimized. After the periodic observation of the period of half a year, it is considered that the method of injection is effective and feasible.