摘要
高层建筑物在进行大型钢结构施工吊装中具有跨度大、结构复杂和高空对接等技术难度,获取空间几何数据的传统方法是利用全站仪来实现,在高层建筑物牛角上所贴的标志存在误差且高空作业粘贴标志危险大;与传统测量方法相比,地面三维激光扫描(Terrestrial Laser Scanning,TLS)方法可快速、高效、非接触式地获取钢结构表面高精度三维信息及钢结构挠度,较全站仪获取空间单点信息更具效益性。以厦门国贸金融中心连廊钢结构为研究对象,首先介绍钢结构的施工吊装方案及所需采集的空间数据信息,接着以获取钢结构空间几何位置及预提升挠度值的需求出发,详细阐述点云数据的获取方案及后期处理技术和方法,并重点论述二维立面图空间信息的获取及钢结构连廊挠度值的提取分析等。通过与全站仪测量获取的数据对比分析可知,采用地面三维激光扫描仪能快速、精确地为高空钢结构吊装提供必要的空间数据及扰度监测,是有效的并优于传统方法,既保证施工质量,又为玻璃幕墙安装提供形态依据。该研究成果可应用于高层建筑物的钢结构施工吊装以及变形监测等。
There are some technical difficulties （such as large span, complex structure and high altitude docking, etc） in the construction hoisting of a large steel structure for high-rise building, the traditional method of acquiring spatial geometric data is to use the total station, the sign posted in the horn of high-rise buildings causes errors and the thing that working high above the ground to paste the sign is dangerous. Compared with the traditional measure- ment method, the terrestrial laser scanning technology can efficiently acquire high precision three-dimensional infor- mation and deflection of steel structure without any contact, which is more efficiency to the total station that acqui- ring spatial single point information. Taking steel structure of corridor of Xiamen International Trade Financial center building as the research object, introduce firstly the construction lifting scheme of steel structure and spatial data information needed to be acquired. According to demand of obtaining the spatial geometry position of the steel structure and improving deflection value, the article then elaborates on the point-cloud data acquisition scheme and post-processing technical methods, expounds the acquisition of spatial information of two-dimensional elevation and the extraction of deflection value of corridor steel structure. Compared with the data which measured by the total station, the terrestrial laser scanning technology can quickly and accurately provide the necessary spatial data for high-ahitude steel structure hoisting and deflection monitoring. The terrestrial laser scanning technology is effective and better than traditional method, and it ensures the construction quality and provides the morphological evidence for the installation of glass curtain wall. The research results can be applied to applications such as the construction hoisting of large steel structures for high -rise buildings and deformation monitoring, etc.
出处
《世界地震工程》
CSCD
北大核心
2016年第2期9-17,共9页
World Earthquake Engineering
基金
国家自然基金面上项目41574011
福建省自然基金面上项目2016J01199
福建省测绘地理信息科技创新项目2015J14
关键词
地面三维激光扫描
点云数据
高空钢结构
施工吊装
挠度监测
terrestrial laser scanning
point cloud data
high-altitude steel structure
hoisting in construction
deflection monitoring
