Abstract:Research purposes: The method of distributing plane control net and principles of precision design are presented in this paper through doing the researches on the design of plane control net for construction of ballastless track of passenger dedicated railway.
Research methods: By doing the simulation tests and making theoretical analysis of error, the inverse calculation was done for the precisions of control nets at all levels and the researches were done on the method of distributing control oat and the principle of precision design.
Research results: The method of distributing plane control net and principles of precision design are presented.
Research conclusions:The limitation value of long deformation of coordinate projection of the control net for construction of ballastless of passenger dedicated railway should not be over 10 mm/km. A pair of inter-visible GPS spots far away of approximate l km should be laid out within the range of S km along the railway fur the control net. The extending aux- diary facilities with approximate values and conducting wires should be installed between the GPS spots and the side length of the suite should be between 400-60D mm. The angle error caused by the error of any three adjacent control foundation pile spots should not he over 8 minutes.
卢建康,任自珍,岑敏仪. 客运专线无砟轨道施工平面控制网优化设计[J]. 铁道工程学报, 2007, 24(8): 49-52.
LU Jian-kang,REN Zi-zhen,CEN Min-yi. Optimum Design of Plane Control Net for Construction of Ballastless Track of Passenger Dedicated Railway. 铁道工程学报, 2007, 24(8): 49-52.