某轻轨高架桥保护区监测重点分析及实践  

Analysis on Key Points of Light Rail Viaduct Monitoring and Case Study

作　　者：王鑫森[1] 侯金波[1] Wang Xinsen;Hou Jinbo(TianJin Institute of Geotechnical Investigation & Surveying,Tianjin 300191,China)

机构地区：[1]天津市勘察院,天津300191

出　　处：《城市勘测》2018年第6期145-148,共4页Urban Geotechnical Investigation & Surveying

摘　　要：轻轨高架桥桥身与桥墩构成的系统不是超静定结构,为保证轻轨运营安全需将桥跨作为监测重点,同时观测桥墩的沉降及倾斜变化作为补充。本文通过对轻轨高架结构进行分析,在轻轨高架结构的关键部位布设了水平、竖向、错动等三项桥跨监测项,沉降、倾斜等两项桥墩监测项,监测结果清晰地显示了轻轨高架在周边施工周期内的累计变形量及变形过程曲线,确保了施工期间的轻轨行车安全。The bridge spans and piers of light rail viaduct build a determinate structure instead of a statically determinate structure,of which the spans should be the key part of monitoring and the other be the supplement,ensuring the viaduct which loads the tracks and trains continuously under control.According to the analysis of the structure,we set up three items containing horizontal and vertical displacement and dislocation to monitor bridge spans and two to the piers which are sedimentation and gradient.The statistics reveal clearly how the viaduct become deformed during the external construction and its cumulative deformation,which ensures the trains drive in a safe circumstance.

关 键 词：轻轨 高架结构 监测重点 数据分析 

分 类 号：P258[天文地球—测绘科学与技术]