运营高速铁路重点地段基础变形监测技术研究

目前运营高速铁路重点地段基础变形监测缺乏完整的技术体系,以某运营高速铁路重点地段基础变形监测实践为依托,进行以下研究:(1)分析运营期高速铁路重点地段基础变形监测特点,提出重点地段的选取原则;(2)结合相关规范,提出适用于有砟轨道和无砟轨道的监测断面和监测点布设方法以及相关监测技术要求;(3)根据重点地段监测方式的特点...

Research on Foundation Deformation Monitoring Technology in Key Sections of High-speed Railway in Operation

At present,there is a lack of a complete technical system for foundation deformation monitoring in key sections of high-speed railway in operation.Based on the foundation deformation monitor in a key section of an operating high-speed railway,the following studies are carried out:(1)analyze the characteristics of foundation deformation monitoring in key sections of high-speed railway in operation and put forward the principles for selecting key sections;(2)in combination with relevant specifications,propose monitoring sections and monitoring point layout methods suitable for ballasted and ballastless tracks,as well as relevant monitoring technical requirements;(3)according to the characteristics of monitoring methods in key sections,propose methods for selecting stable reference points;(4)discuss the deformation analysis method of key sections,and propose a comprehensive early warning mechanism for key sections with“single monthly deformation”and“three-month cumulative deformation”as the main measurement indicators.Research results are proved to be helpful to grasp the deformation of key sections in time which help take corresponding measures to ensure the smoothness of the line.