京雄城际铁路机场隧道面临不均匀沉降以及地面异常入侵等风险，为了更加迅速、直观地了解隧道结构全生命周期的安全及健康状态，需要对其进行实时在线监测。将光纤传感技术应用于京雄城际隧道的结构健康监测工作中，先结合BIM技术对高铁隧道的分层沉降、衬砌环向应变、渗漏水、火灾、异常侵入、变形缝变形等多参量开展智能化、高精度监测技术研究；再结合相应评估指标与预警阈值构建基于多参量传感技术的高速铁路隧道形位感测管理平台展示系统。该系统集数据采集、监测预警、安全评估以及可视化展示于一体，能够实时反映隧道所处的安全状况，为高铁隧道安全运营提供有力保障，并为“智能京雄”工程提供强有利的技术支撑。
The BeijingXiong′an
intercity railway airport tunnel is facing the risk of differential settlement
and abnormal ground invasion. For an easy and intuitive understanding of the
safety and health status of the tunnel structure throughout the entire life
cycle, realtime online monitoring is essential.
Herein, an optical fiber sensing technology is employed to 〖JP2〗monitor the structural health of the
BeijingXiong′an intercity
tunnel. Based on building information modeling technology,〖JP〗 intelligent and highprecision monitoring is conducted on the multiple parameters of the
highspeed railway tunnel, including layered
settlement, lining circumferential strain, leakage, fire, abnormal intrusion,
and deformation joint deformation. A display system for the shape and position
sensing management platform for the highspeed railway
tunnel based on a multiparameter sensing technology is developed according to
the corresponding evaluation index and early warning threshold. The system
integrates data acquisition, monitoring, warning, safety assessment, and visual
display, which can reflect the safety condition of the tunnel in realtime, thus
ensuring a safe operation of the highspeed railway
tunnel and a strong technical support for the "Jing Xiong" project.
