采用三维激光扫描精准获得钢构件初始几何缺陷的方法

邹奕翀; 胡黎俐; 冯鹏; 李庆伟; 滕明睿

doi:10.13204/j.gyjzG20110602

采用三维激光扫描精准获得钢构件初始几何缺陷的方法

doi: 10.13204/j.gyjzG20110602

邹奕翀¹,
胡黎俐^2,3,
冯鹏^3, ,,
李庆伟^3,4,
滕明睿³

1. 中煤科工集团北京华宇工程有限公司, 北京 100120;
2. 上海交通大学, 上海 200240;
3. 清华大学, 北京 100084;
4. 中冶建筑研究总院有限公司, 北京 100088

详细信息

作者简介:
邹奕翀,男,1994年出生,硕士。

通讯作者:
冯鹏,男,1977年出生,博士,fengpeng@tsinghua.edu.cn。

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- 文章访问数: 377
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- 被引次数: 0
出版历程
- 收稿日期: 2020-11-11
- 网络出版日期: 2021-09-16
- 刊出日期: 2021-09-16

PRECISE MEASUREMENT METHOD OF INITIAL GEOMETRIC IMPERFECTIONS OF STEEL STRUCTURAL MEMBERS USING THREE-DIMENSIONAL LASER SCANNING

1. Beijing Huayu Engineering Co., Ltd., China Coal Science and Technology Group, Beijing 100120, China;
2. Shanghai JiaoTong University, Shanghai 200240, China;
3. Tsinghua University, Beijing 100084, China;
4. Central Research Institute of Building and Construction Co., Ltd., MCC Group, Beijing 100088, China

摘要

摘要: 钢结构初始几何缺陷是影响构件性能、施工安装的重要因素，传统测量手段存在效率不高、数据不全、精度不足等问题。采用三维激光扫描技术可以高效、精准地扫描构件外形，然而获得的点云数据需要进行复杂的处理，一定程度上限制了该技术的应用。发展了一种构件数字化模型，分为构件、截面、几何元素三个层次；提出了基于三维激光点云的数字化模型建立方法，包括校准固有坐标系、构件点云切片和标注、截面点云分割和标注三个主要步骤；提出了基于数字化模型的全局和局部初始几何缺陷的计算方法。数字化模型及其建立方法在精确保留扫描细节的同时抽象出了几何特征。采用手持式三维激光扫描仪和自编软件BCModeler，采集并处理得到了钢构件的整体和局部初始几何缺陷，验证了方法的有效性。
- 三维激光扫描 /
- 钢构件 /
- 初始几何缺陷 /
- 点云 /
- 三维重建
Abstract: Initial geometric imperfection of steel structure is an important factor that affects mechanical performance, construction and installation. Traditional measurement methods have shortages such as low efficiency, incomplete data, and insufficient accuracy. High-precision point clouds of shape of steel members can be efficiently obtained by three-dimensional laser scanning. However, the processing method of the point clouds need to be developed. First, a digital model of structural member is developed, composing of three levels:component, section, and geometric element. Second, a modeling method of the digital model based on laser point cloud was proposed, including calibration of the inherent coordinate system, slicing and labeling member point cloud, segmenting and labeling section point cloud. Third, the calculation method of global and local initial geometric imperfections based on the digital model is proposed. The digital model abstracts geometric features while retaining precise scanning details. Finally, using a handheld 3D laser scanning device and self-made software BCModeler, initial global or local geometric imperfections of an H-section steel column and outer steel tube of a hybrid column are obtained, thus the effectiveness of the method is verified.
- 3D laser scanning /
- steel member /
- initial geometric imperfection /
- point cloud /
- 3D reconstruction

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参考文献(21)

[1]	徐阳. H型钢柱安装初始缺陷对门式钢结构厂房结构影响分析研究[D]. 合肥:安徽建筑大学, 2020.
[2]	陈骥. 钢结构稳定理论与设计[M]. 北京:科学出版社, 2011.
[3]	FASOULAKIS Z C, LIGNOS X A, AVRAAM T P, et al. Investigation on Single-Bolted Cold-Formed Steel Angles with Geometric Imperfections Under Compression[J]. Journal of Constructional Steel Research, 2019, 162.DOI: 1016/j.jcsr.2019.105733.
[4]	史洪泉. 大跨度空间钢结构施工全过程力学分析及考虑施工影响的若干要素研究[D]. 南京:东南大学, 2005.
[5]	中华人民共和国住房和城乡建设部.钢结构工程施工质量验收规范:GB 50205-2020[S].北京:中国计划出版社, 2020.
[6]	李国强, 刘玉姝. 一种考虑初始缺陷影响的非线性梁单元[J]. 计算力学学报, 2005(1):69-72.
[7]	张学伟, 杨志强, 马骥. 测绘技术在钢结构施工及验收中的应用研究[J]. 北京测绘, 2017(增刊1):198-201.
[8]	张智敏. 球面网壳钢结构安装施工测量技术分析[J]. 科技经济导刊, 2019, 27(9):101.
[9]	李海泉, 杨晓锋, 赵彦刚. 地面三维激光扫描测量精度的影响因素和控制方法[J]. 测绘标准化, 2011, 27(1):29-31.
[10]	邵双运. 光学三维测量技术与应用[J]. 现代仪器, 2008(3):10-13.
[11]	杜立彬, 高晓辉, 夏进军, 等. 一种新型激光三维扫描测量仪的研制[J]. 激光技术, 2005(4):366-369.
[12]	KORUMAZ M, BETTI M, CONTI A, et al. An Integrated Terrestrial Laser Scanner (TLS), Deviation Analysis (DA) and Finite Element (FE) Approach for Health Assessment of Historical Structures:A Minaret Case Study[J]. Engineering Structures, 2017, 153:224-238.
[13]	肖川, 魏金满, 杨兴盛, 等. 三维激光测量技术在钢结构制作中的应用研究[J]. 钢结构, 2017, 32(12):86-88.
[14]	SELVARAJ S, MADHAVAN M. Geometric Imperfection Measurements and Validations on Cold-Formed Steel Channels Using 3D Noncontact Laser Scanner[J]. Journal of Structural Engineering, 2018, 144(3).DOI:10.1061/(ASCE) ST.1943-54X.0001993.
[15]	FENG P, ZOU Y C, HU L L, et al. Use of 3D Laser Scanning on Evaluating Reduction of Initial Geometric Imperfection of Steel Column with Pre-Stressed CFRP[J]. Engineering Structures, 2019, 198.DOI: 10.1016/j.engstruct.2019.109527.
[16]	陈泷, 王传庆, 陈桢, 等. 三维激光扫描技术在钢结构厂房变形测量中的应用[J]. 黑龙江工程学院学报, 2016, 30(5):29-33.
[17]	FISCHLER M, BOLLES R. Random Sample Consensus:A Paradigm for Model Fitting with Applications to Image Analysis and Automated Cartography[J]. Communications of the ACM, 1981, 24(6):381-395.
[18]	LIBRARY P C. Point Cloud Library The Point Cloud Library (PCL) is a Standalone, Large Scale, Open Project for 2D/3D Image and Point Cloud Processing[EB/OL].[2020-10-30]. https://pointclouds.org/.
[19]	COMPANY T Q. Qt-Cross-Platform Software Development for Embedded & Desktop[EB/OL].[2020-10-30]. https://www.qt.io/.
[20]	魏劭杰. 内填充灌浆料复材管加固钢构件压弯性能研究[D]. 北京:清华大学, 2019.
[21]	邹奕翀. 内置高强螺旋箍筋的方钢管混凝土组合柱受压性能研究[D].北京:清华大学, 2020.