The New Method Of Surveying And Data Processing To Track Reference Network

The measurement technology of Track Reference Network gradually introduced in China with the construction of Beijing-Tianjin inter-city railway,As a three-dimensional network demanding very high precision,the Track Reference Nerwork mainly serves for the track slab fine adjustment. The Track Reference Network measurement technology have mang differences from the traditional surveying in our conntry, There is no lack of worth learning advanced methods, but some practice is justified remains debatable.Seeking for the method which meet the measurement habits in China.in this paper,on the basis of research the Track Reference Network measurement technology,new method is proposed for surveying of Track Reference Network, Hope to provide a reference for the method of Track Reference Network.The thesis mainly includes the following sections:Firstly, Separate Introduce measurement and data processing methods of Track Reference Network flat network and the elevation network. Plane network including lap calculation methods of observation, data processing and calculation between the station. Elevation network including the methods of observation, data processing within the annexed lines and and calculations of joint points between adjacent stations.Secondly, Analysis of the German Track Reference Network method,consider There are some inadequacies,Such as the measurement of efficiency is not high,the coordinate precision of Track Reference points uneven,the net-shape is irreglar when associated measurement control point.To improve the measurement efficiency,and to ensure the measurement accuracy, advanced a new method named "Double Line Method"to take the plane network measurement and have a comprehensive exposition of this method. Analysis to the measured data from observation experiments, Verify the correctness and feasibility of this method.Thirdly,to find ways which in line with the measuring and data processing of our country, advanced a new method named "Construct Net Method"to take the plane network measurement,and have a comprehensive exposition of this method. Analysis to the measured data from observation experiments, Verify the correctness and feasibility of this method.And then,try to use the method of three-dimensional measurement and adjustment for measuring and data processing of Track Reference Network,derived the mathematical model of three-dimensional adjustment,study the method of weaking the influence of environmental factors,Analysis to the measured data from observation experiments, Verify the correctness and feasibility of this method.At last,propose a new method of piont layout of Track Reference Network, Track Reference Nerwork mainly serves for the track slab fine adjustment,but not every Track Reference points are used.To Improve the measurement efficiency and Reduce costs,suggest that interval two track board laid a track reference point,And proposed the corresponding track slab fine adjustment method.