TLS在复杂钢结构特征获取中的应用

随着建筑行业的飞速发展，全国各地新建了大批复杂钢结构，其结构复杂，建筑体量巨大，在钢结构建筑施工的过程中，为了进行精确的钢结构拼接和方便其他部件的安装，需要获取钢结构部件上的特征信息。传统钢结构建筑物的安装与检测获取特征信息困难，延误施工工期。三维激光扫描可以通过大范围密集扫描快速获取钢结构的点云数据，经过处理可以获取钢结构的特征信息。本文以周口店北京人遗址大型钢结构圆盘构件节点坐标获取为例，介绍了钢结构点云数据的获取和数据处理流程，提出了基于几何位置关系的构件节点坐标提取方法。结果表明，采用三维激光扫描技术可以快速准确地获取工程坐标系下的钢结构构件特征，从而满足工程精度的要求。

Application of TLS in acquisition of complex steel structure features

With the rapid development of the construction industry, a large number of complex steel structures have been built all over the country. The structure is complex and the building volume is huge. In the process of steel structure construction, in order to accurately splicing the steel structure or facilitating the installation of other components. It is often necessary to obtain characteristic information on steel structural components. It is difficult to obtain the characteristic information for the installation and inspection of traditional steel structures, and delay the construction period. The 3D laser scanning can quickly acquire the point cloud data of the steel structure through a large-scale intensive scanning, and the processing can obtain the characteristic information of the steel structure. Taking the coordinate acquisition of large steel structure disc members of Zhoukoudian Peking Man Site as an example, this paper introduces the acquisition and data processing flow of steel structure point cloud data and the method of component node coordinate extraction based on geometric position relationship. The results show that the 3D laser scanning technology can quickly and accurately acquire the characteristics of steel structural members under the engineering coordinate system which can meet the engineering precision requirements.