激光指向仪控制桥梁轴线技术  

Technology of Laser Pointer Controlling Bridge Axis

作　　者：姜晓博 李维 JIANG Xiaobo;LI Wei(The Fourth Engineering Co.,Ltd.of CCCC First Highway Engineering Co.,Ltd.,Nanning,Guangxi 530033,China)

机构地区：[1]中交一公局第四工程有限公司,广西南宁530033

出　　处：《施工技术》2020年第9期93-95,共3页Construction Technology

摘　　要：山区高速公路工程常遇狭长河谷、交错山涧等情况,施工测量放样面临盲区大、大气折光影响多变、安全隐患多等问题,使建立控制网、仪器架设、对中照准等操作困难,造成投入大、风险高、结果可靠性低等后果。借鉴隧道工程中使用激光指向仪的成功经验,通过优化改造,将其应用于石桥河特大桥轴线测量控制中,取得良好效果。Mountain highway projects often encounter narrow river valleys and interlaced mountain streams.Construction surveys are faced with the problems of large measurement blind areas,variable atmospheric refraction effects,and many hidden safety hazards.This makes it difficult to set up control networks,set up instruments and alignment,which has the consequences of high investment,high risk,and low reliability of results.This paper draws on the successful experience of using laser pointers in tunnel engineering.Through optimization and transformation,the laser pointers are applied to the axis measurement control of Shiqiaohe super large bridge,and good construction results are obtained.

关 键 词：桥梁工程 测量 轴线控制 激光指向仪 大气折光 

分 类 号：U445[建筑科学—桥梁与隧道工程]