武广铁路客运专线沉降观测与预测技术

武广铁路客运专线全线铺设无砟轨道。为了确保高速列车舒适、平稳运行,线路工程变形控制是关键技术问题之一。在研究客运专线路基、桥涵和隧道的沉降观测的技术方案等关键控制技术的基础上,使用扩展双曲线法对路基沉降结果进行了预测。预测结果表明,一般路基地段沉降量最大断面的预测工后沉降值为5.8 mm,桥梁墩台、涵洞和隧道的沉降量均较小。这些沉降控制技术和结论对于进行沉降观测控制与预测工作有一定的参考价值。

Technologies for Wuhan-Guangzhou railway passenger dedicated line settlement observation and prediction of settlement deformation

Ballastless track was paved in Wuhan-Guangzhou railway passenger dedicated line.Controlling rail line deformation played an important role in ensuring the train running stability and degree of passenger comfort.In this paper,the key controls measures for settlement observation of roadbed,bridge and culvert,tunnel were researched and settlement deformation was forecasted by extended hyperbolic method.Predicted results indicate that maximum value settlement deformation was 5.8 mm.Settlement deformation of bridge and culvert,tunnel was low.Technologies of controlling settlement deformation and conclusions are useful.