地铁隧道下穿既有高铁桥梁基础的变形控制

以南京地铁隧道下穿既有高铁桥墩基础工程项目为例,从桥墩沉降和水平位移2个方面探讨了桥墩变形控制限值的问题；从加固措施、施工控制和信息化监测3个方面采取措施控制高铁桥墩基础的变形.监测结果表明,各项监测项目均在变形控制限值内,采取的变形控制措施是有效的,可供类似工程参考.

Foundation Deformation Control of Shield Tunnel Under-pass Existing High Speed Railway

Based on the engineering project of high-speed railway bridge piers, this article discusses the control deformation limits from settlement and horizontal displacement of bridge piers. Reinforcement measures, construction control measures and information monitoring measures can be used to control the foundation deformation of high-speed railway bridge piers according to the high limits requirement of deformation. Monitoring results show that data of monitoring items are all within the control deformation limits, and the deformation control measures are effiective. Moreover, the measures and monitoring results can be taken as reference for similar engineering projects.