高速铁路重点地段基础变形沉降监测技术应用及数据分析

Application and Data Analysis of Foundation Deformation and Settlement Monitoring Technology in Key Sections of High-speed Railway

受地面沉降和铁路构筑物自身沉降变形如工后沉降、不均匀沉降和过渡段差异沉降等诸多因素影响,高速铁路部分线路地段在运营后发生区域性沉降或抬升变化。对于发生区域性沉降或抬升变化的地段要进行重点地段基础变形沉降监测。本文采用二等附合水准路线中视法对某高速铁路有区域抬升变化的地段进行多期重点地段基础变形沉降监测,并利用CPⅢ高程测量方法对监测出的变化进行验证,根据监测结果及验证结果分析该监测方法能够准确反映重点地段的变形情况,为设备管理单位掌握线路变形情况和维修、养护提供重要的数据依据。

Affected by many factors such as land subsidence and the settlement deformation of railway structures,such as post construction settlement,uneven settlement and differential settlement of transition section,regional settlement or uplift changes occur in some sections of high-speed railway after operation.For the section with regional settlement or uplift change,it is necessary to monitor the foundation deformation and settlement of key section.In this paper,the method of second-class attached leveling is used to monitor the foundation deformation and settlement of the section with regional uplift change in a high-speed railway,and the CPⅢelevation measurement method is used to verify the monitored changes.This monitoring method can accurately reflect the deformation of key sections,and provide a very important data basis for equipment management units to grasp the line deformation and maintenance.