临时铁路桥梁运营施工监测与结果分析  

Monitoring and Result Analysis of Temporary Railway Bridge Construction

作　　者：张力文[1] 査小君 ZHANG Liwen;ZHA Xiaojun(Beijing Urban Construction Exploration and Research Institute Liability Co.,Ltd.,Ningbo 315000,China;Jinhua Rail Transit G.roup Co.,Ltd..,Jinhua 321000,China)

机构地区：[1]北京城建勘测设计研究院责任有限公司,浙江宁波315000 [2]金华市轨道交通集团有限公司,浙江金华321000

出　　处：《测绘地理信息》2018年第6期113-116,共4页Journal of Geomatics

摘　　要：客运火车站上跨施工基坑干线铁路钢格构柱临时铁路便桥是国内建设领域新型结构,在便桥下基坑开挖同时,还要保证客货列车以一定的速度安全的通过便桥,这样对便桥进行静、动态变形监测以保证铁路运营安全就尤为重要。通过边角网方案对便桥水平位移进行监测,精密几何水准测量对便桥沉降进行监测,拾振器对便桥竖、横向振动位移进行监测。并对监测数据进行分析,以确保临时铁路便桥运营线路的安全。结果表明,便桥静、动态变形值在整个工程中均在规定的允许范围之内,加固便桥能够保障铁路便桥上列车安全运营。The temporary railway bridge of Passenger Rail- way Station spanning the foundation pit of main line railway applies a new domestic construction structure--steel lattice column.The safe pass of the trains for both passenger and freight at certain speed while the foundation pit is under ex- cavation makes it important to monitor the deformation of the temporary bridge statically and dynamicalb;.This paper probes the attempts to monitor the horizontal displacement by means of triangulateration network,supervise sedimenta- tion by precise geometry leveling,vertical and lateral vibra- tion displacement by vibration pickup.Then we analyze the monitoring data to ensure the safety of bridge line of tempo- rary railway.The results show that the static and dynamic deformation values of tempoi-ary bridge in the whole project are all within reasonable ranges,and reinforcing temporary bridge can guarantee safe operation of train on the temporary railway bridge.

关 键 词：软土深基坑 临时铁路便桥 三维位移 振动位移 静态变形分析 动态变形分析 

分 类 号：P258[天文地球—测绘科学与技术] U446[建筑科学—桥梁与隧道工程]