基于液力测量的高速铁路无砟轨道路基沉降变形监测方法

High-speed railway ballastless track roadbed settlement monitoring method based on fluid pressure differential

路基面沉降变形是高速铁路路基变形稳定性评估的一项重要指标.在分析沉降变形传感测试技术的基础上,设计开发了基于液力测量原理的适用于高速铁路路基面沉降变形长期监测的传感器,研制了相应的沉降自动监测系统,依托京沪高铁路基沉降变形监测项目进行了现场实际应用,描述了以研发的自动监测系统自动监测为主,人工监测为辅监测方案的实施过程,以及如何在一定程度上实现自动和人工两种监测手段的互相校核.监测结果验证了所采取基于液力测量的自动监测方法在高速铁路路基面沉降监测中的适用性和可靠性.

The roadbed surface settlement is an important index for the high-speed railway（HSR） roadbed deformation and stability.It’s difficult to monitor after the laying of HSR ballastless track.On the analysis basis of settlement sensing survey technologies,the sensor suitable for this situation was devised based on fluid pressure differential,and the automatic monitoring system was developed.The monitoring system was adopted in a HSR roadbed settlement monitoring project.The monitoring implement progress of the developed automatic monitoring system supplemented by manual monitoring was stated,and how to realize the mutual check between automatic and manual monitoring methods was also set forth.Results indicate that the adopted automatic monitoring method based on fluid pressure differential is applicative and reliable in HSR roadbed surface settlement monitoring.