三维激光扫描技术在大型复杂钢结构高空对接中的应用*
  • 作者: 李文德,黄韬睿,徐辉
论文摘要

三维激光扫描技术在大型复杂钢结构高空对接中的应用*

李文德1,黄韬睿1,徐辉2 

(1.中国铁建国际集团有限公司,北京 1000392. 精工国际钢结构有限公司,上海 201100)

[摘要]保证大型复杂钢结构的高空对接精度是施工的关键,依托卢赛尔体育场钢结构工程,全面分析了钢结构安装测量的难点。采用全站仪测量技术将反射贴片作为靶标粘贴在待测控制点上的传统测量技术,无法满足钢结构安装控制的精度要求,受全站仪测量的局限性及测量精度影响,使用三维激光扫描技术进行钢结构安装控制测量。介绍了三维激光扫描技术的工作原理,阐述了三维激光扫描技术的使用流程和点云模型与理论模型拟合比对的方法。三维激光扫描技术应用在钢结构高空对接中可满足安装精度控制要求,拟合结果的可视化效果好,可作为指导现场施工的依据。

[关键词]体育场;钢结构;测量;三维激光扫描;高空对接;精度控制

[中图分类号]TU758.11    [文献标识码]文献标志码A    [文章编号] 1002-8498(2021)08-0038-05

Application of Three dimensional Laser Scanning Technology in Large Complex Steel Structure Docking at High Altitude

LI Wende1, HUANG Taorui1, XU Hui2 

(1.China Railway Construction International Co., Ltd., Beijing 100039, China; 2. Jinggong Steel International Co., Ltd., Shanghai 201100, China) 

Abstract: The accuracy control is one of the most important things during high altitude docking of large complex steel structure construction. The difficulties of steel structure installation survey of Lusial Stadium project are analyzed. Currently, the reflective sticker is widely used as a survey target during steel structure installation, but this method has its limitation on the accuracy level. Based on the situation and limitation of this project, the total station, and reflective sticker can not fit for accuracy requirement. The three dimensional laser scanning is chosen to control the accuracy of steel structure installation. In this paper, the working principle and implementation procedure of three dimensional laser scanning are introduced, the method of comparing the scanned point cloud model to the design model is expounded. Through the project practice, it is shown that the three dimensional laser scanning technology can meet the high accuracy requirement in large complex steel structure docking at high altitude. The fitting result is more visually intuitive and can be used as the basis to guide the steel structure installation.  

Keywords: stadiums; steel structures;monitoring; three dimensional laser scanning;high altitude docking; accuracy control

*中国铁建股份有限公司科技研发计划项目(2020-B22

[作者简介]李文德,计划工程师,助理经济师,Email: li.wende@crcc.qa

 

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