Intelligent Virtual Preassembly Application of Long Span Steel Truss Based on Point Cloud and BIM

Xiang Li; Huifeng Hu; Tianguo Chen; Jiepeng Liu; Peng Yu; Guojun Zhao

doi:10.13206/j.gjgs23081201

Volume 38 Issue 10

Oct. 2023

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Xiang Li, Huifeng Hu, Tianguo Chen, Jiepeng Liu, Peng Yu, Guojun Zhao. Intelligent Virtual Preassembly Application of Long Span Steel Truss Based on Point Cloud and BIM[J]. STEEL CONSTRUCTION(Chinese & English), 2023, 38(10): 10-15. doi: 10.13206/j.gjgs23081201

Citation:

Xiang Li, Huifeng Hu, Tianguo Chen, Jiepeng Liu, Peng Yu, Guojun Zhao. Intelligent Virtual Preassembly Application of Long Span Steel Truss Based on Point Cloud and BIM[J]. STEEL CONSTRUCTION(Chinese & English), 2023, 38(10): 10-15. doi: 10.13206/j.gjgs23081201

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Intelligent Virtual Preassembly Application of Long Span Steel Truss Based on Point Cloud and BIM

doi: 10.13206/j.gjgs23081201

1. School of Civil Engineering, Chongqing University, Chongqing 400045, China;
2. School of Civil Engineering, Changsha University of Science and Technology, Changsha 410114, China;
3. China Construction Steel Structure Corporation Ltd., Chongqing 402160, China;
4. Power China Road Bridge Group Corporation Ltd., Chongqing 402260, China

Received Date: 2023-08-12
Available Online: 2023-12-25

Abstract

Abstract

Large and complex steel structures have the characteristics of a large number of structural components, a large workload of welding and bolting, and multiple construction processes. Traditional preassembly methods not only have high costs and low efficiency, making it difficult to meet the requirements of large and complex spatial structures. To address this issue, a pre-assembly method for large and complex steel structures based on BIM and 3D laser scanning technology is proposed. Taking the Western(Chongqing) Science Hall project as the engineering background, the intelligent construction process of roof circular pipe truss and large-span floor truss was studied, and the technical route and method flow were proposed. A benchmark extraction method based on random sampling consistency algorithm and Laplacian rolling ball hybrid detection algorithm is proposed for common circular pipe trusses. A directed bounding box method is suggested to obtain the registration reference points for the regular shaped I-shaped steel truss and bracket point cloud. To obtain construction quality inspection data, k-nearest neighbor algorithm, principal component analysis algorithm, and edge detection algorithm based on region criteria to intelligently extract interface corners are suggested.
The results indicate that the combination of BIM and 3D laser scanning technology has achieved relatively accurate results in virtual pre assembly of circular tube trusses and I-shaped beam trusses; The cylindrical truss reference points obtained using the proposed method, combined with the full arrangement algorithm of the reference points and the iterative nearest neighbor algorithm, can achieve high registration quality.
- large and complex steel structure,
- point cloud data,
- intelligent virtual trial assembly,
- dimensional quality inspection

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References(18)

References

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